Care

Soil Management: Choosing a System

The choice of soil management system depends on climate, orchard type, and tree age (Potapov et al., 2000). For cherries in amateur gardens, three approaches are most often used:

Black fallow – regular loosening of the soil in the trunk circle and between rows, keeping the soil free of weeds (Krivko, 2014). This system works well in arid regions because it helps accumulate moisture and enhances soil microbiological activity. However, it has drawbacks: soil structure is destroyed, and frequent tillage can damage the shallow roots of cherry.

Sodding – growing perennial grasses in the inter‑rows and even in the trunk circles (Potapov et al., 2000). This approach protects the soil from erosion, improves its structure, and enriches it with organic matter. It is especially effective in regions with sufficient rainfall. However, in arid zones, grasses become competitors of cherry for moisture and nutrients, which can reduce yields.

Mulching – the most gentle and effective method for amateur gardeners. The soil is covered with a layer of organic materials that retain moisture, suppress weeds, and gradually enrich the soil with nutrients (Martin, 2019).

The optimal solution for most gardeners is a combined approach: trunk circles are kept under mulch or black fallow, while inter‑rows are sodded or regularly mown (Agustí, 2010).

Soil Loosening

Loosening is a crucial practice that provides oxygen to the roots, improves water permeability, and promotes the development of beneficial soil microorganisms.

How and when to loosen:

• In the first 2–3 years after planting, the soil in the trunk circle is loosened to a depth of 8–10 cm after each rain and watering (Mikheev, Revyakina, 2004). This prevents crust formation and retains moisture.
• Near the trunk (stem), loosening is done to a depth of no more than 10–15 cm to avoid damaging the roots (Mikheev, Revyakina, 2004).
• In the inter‑rows of young orchards, if kept under black fallow, the soil is turned over to a depth of 20–25 cm in autumn or early spring (Mikheev, Revyakina, 2004).
• Important: never loosen or dig the soil when it is too wet or too dry. Wet soil loses its structure during tillage, while dry soil turns to dust. The optimal condition is when the soil is crumbly and slightly moist to the touch (Martin, 2019).

Why it works: Loosening breaks the capillaries through which moisture rises to the surface and evaporates. Therefore, even without irrigation, loosening helps preserve moisture in the root zone – this technique is called “closing moisture” (Krivko, 2014).

Weed Control

Weeds are serious competitors of cherry for water and nutrients, especially in young orchards. They must be removed regularly, preventing flowering and seeding (Mikheev, Revyakina, 2004).

Control methods:

1. Manual weeding – a reliable and environmentally friendly method for small gardens. It is best to pull weeds after rain, when the soil is moist.

2. Regular loosening – cuts the roots of weeds and prevents their development.

3. Mulching – the most effective method: a layer of mulch 4–6 cm thick suppresses most weeds.

4. Herbicides – used in commercial orchards for treating trunk strips (Krivko, 2014). For amateur gardens, this is a last resort: herbicides can damage cherry roots, especially on dwarfing rootstocks, and disrupt the ecological balance. If you use herbicides, strictly follow the instructions and treat only the trunk strips, avoiding contact with leaves and the trunk.

Mulching

Mulching is one of the most valuable techniques in cherry care. A layer of mulch 4–6 cm thick performs several functions (Agustí, 2010; Martin, 2019):

• Retains moisture – reduces evaporation from the soil surface, especially in hot weather.
• Suppresses weeds – light does not pass through the mulch layer, preventing weed seeds from germinating.
• Improves soil structure – organic mulch gradually decomposes into humus, and cherry roots develop in the fertile layer.
• Protects roots from overheating and freezing – mulch smooths out daily temperature fluctuations in the soil.
• Reduces erosion risk – protects soil from washing away by rain.

Which materials to use:

• Organic mulch: well‑rotted compost, manure, peat, mown grass, straw, bark, wood shavings (Hessayon, 1993; Martin, 2019). Particularly valuable are ramial wood chips (branch chips) – they decompose slowly, enriching the soil with nutrients, and serve as an ideal medium for beneficial soil fungi (Martin, 2019).
• Inorganic mulch: black polyethylene film, agrotextile. They effectively suppress weeds and retain moisture, but do not improve the soil. Black film works well in young orchards and in hot climates (Hessayon, 1993).

Mulching rules:

• Spread mulch in a layer 4–6 cm thick.
• Do not place mulch directly against the trunk – leave a free space 5–10 cm in diameter around the stem (Cornell Guide, 2003; Martin, 2019). This prevents bark rot and protects against mice.
• Renew the mulch layer as it decomposes, in spring or autumn.
• Before mulching, remove all weeds and, if necessary, apply fertilisers.

Important: On heavy, poorly drained soils and in rainy years, mulch may retain too much moisture, causing root rot. In such cases, use a thinner layer (2–3 cm) and loosen the mulch to improve aeration (Cornell Guide, 2003).

Fertilisation of the Trunk Circle

Cherry is demanding on soil fertility. Fertilisers are applied both at planting and throughout the tree’s life.

Organic fertilisers:

• Well‑rotted manure or compost is applied once every 3–4 years at the rate of 4–6 kg/m² for young trees and 6–8 kg/m² for bearing trees (Mikheev, Revyakina, 2004).
• In autumn, organics are incorporated into the soil during digging, and in spring they are used as mulch.
• When inter‑rows are sodded, organic fertiliser rates are doubled to feed both grasses and trees (Mikheev, Revyakina, 2004).

Mineral fertilisers:

Application rates depend on tree age and soil fertility (Mikheev, Revyakina, 2004). Approximate doses of active ingredient per 1 m²:

• Nitrogen fertilisers (ammonium nitrate, urea) are easily leached; they are applied in spring and in the first half of summer in split doses, superficially (to a depth of 10–15 cm) (Mikheev, Revyakina, 2004). Nitrogen stimulates shoot and leaf growth, so it is applied strictly until mid‑summer so that shoots have time to ripen before winter.
• Phosphorus and potassium fertilisers (superphosphate, potassium sulphate, potassium salt) are applied in autumn to the digging depth (Mikheev, Revyakina, 2004). They can be applied once every 3–4 years at an increased dose, as they move slowly in the soil.

Specifics for cherry:

• Cherry is sensitive to chlorine, so it prefers chlorine‑free potassium fertilisers – potassium sulphate (Trunov et al., 2012).
• On acidic soils (pH below 5.5), neutralisation is necessary – application of lime, dolomite flour, or chalk once every 5–6 years (Mikheev, Revyakina, 2004; Potapov et al., 2000). Do not apply nitrogen fertilisers together with lime – they lose effectiveness.

Fertiliser application in furrows:

The most rational method for mature trees is applying fertilisers in furrows or holes along the periphery of the crown projection (Mikheev, Revyakina, 2004):

• Step back 60–100 cm from the trunk (for young trees) or 100–200 cm (for mature trees).
• Dig one or several furrows 15–20 cm deep.
• Apply fertilisers, fill the furrows, and water.
• For liquid organic feeds (diluted manure 1:10, poultry manure 1:20), make furrows 15–20 cm deep, spaced 40–50 cm apart (Mikheev, Revyakina, 2004).

When Trunk Circle Care Is Especially Important

• In the first 2–3 years after planting – the root system is still weak, and weeds can “overwhelm” the sapling. Loosening and mulching are mandatory.
• During dry periods – mulch and loosening help retain moisture, and regular watering supports the tree.
• In autumn – digging and application of organic and phosphorus‑potassium fertilisers prepare the tree for winter.
• After abundant fruiting – the tree needs to recover its strength, so fertilisation is essential.

Proper care of the trunk circle is an investment in the health and yield of your cherry. Regular loosening, mulching, and timely feeding create conditions in which the tree can fully realise its potential.

Crop Load Control

The main task is to find a balance between the number of fruits and the tree’s capabilities. Overloading leads to three negative consequences:

1. Fruit size reduction – nutrients are insufficient for all, and berries grow small.

2. Tree weakening – all energy goes to fruits, not to the formation of flower buds for the next year. This is the main cause of alternate bearing (a heavy crop year followed by a nearly empty one) (Krivko, 2014).

3. Branch breakage – heavy clusters can break even strong scaffold branches.

How to control load:

Support for Fruiting Branches

When branches are overloaded with fruit, they can break, especially in varieties with brittle wood (e.g., some sweet cherries and tree‑type cherries). This not only loses the crop but also inflicts serious wounds on the tree that take a long time to heal.

Support techniques:

1. Props (chatalas) – under heavy branches, place sturdy forked supports to prevent sagging and breaking. Position the prop so that it does not damage the bark (you can place soft fabric or rubber underneath). Props should be installed before the fruits swell and become heavy (Agustí, 2010; Krivko, 2014).

2. Tying branches together – neighbouring branches are tied with soft twine so that they support each other. This technique is especially good for spreading crowns.

3. Building a strong scaffold – proper pruning at a young age creates branches with wide crotch angles (45–60°). Such branches are more firmly attached to the trunk than those with acute angles and are less likely to break under fruit weight (Potapov et al., 2000).

4. Anchoring to supports – in orchards with tall trees, wire ties or attaching branches to a central stake are used (Agustí, 2010). For cherry, this is especially relevant when forming flat crowns (palmette) and in intensive orchards.

Preventing Splits

Splits are one of the main causes of premature death of cherry trees. They occur not only from crop overload but also from wind, snow, poor pruning, and improper training.

How to prevent:

1. Maintain branch angles – all scaffold branches should diverge from the trunk at an angle of at least 45°, ideally 50–60°. Branches with acute angles (less than 30–40°) have weak tissue union in crotches and split easily (Potapov et al., 2000; Trunov et al., 2012).

2. Do not leave crotches with equal‑strength branches – where two branches of equal thickness diverge, a “fork” forms that breaks easily under load. One of the limbs in the crotch should be weakened by removing some branches or shortening it (Potapov et al., 2000).

3. Limit crown height and width – overly tall trees suffer from wind, and upper branches overloaded with fruit can break, damaging lower ones. The optimal height for cherry in an amateur garden is 2.5–3 m (Agustí, 2010; Mikheev, Revyakina, 2004).

4. Remove water sprouts – these are vertical, vigorous shoots growing inside the crown. They thicken the crown, drain the tree’s strength, and create zones of high tension that can lead to splits. They should be cut out or broken out at a young age (Mikheev, Revyakina, 2004).

5. Wind protection – in regions with strong winds, plant shelterbelts (of fast‑growing trees or shrubs) or install artificial screens. This reduces mechanical stress on branches (Agustí, 2010).

6. Regular inspection – after every heavy crop and after strong winds, inspect the crown for cracks in crotches, branch sagging, or signs of impending splits. At the first signs, reinforce the branch or cut back part of it to relieve load.

Connection with Alternate Bearing

The main reason for alternating “crop – no crop” is precisely that in a high‑yield year, all tree resources are spent on fruits, and flower buds for the next year are hardly formed (Krivko, 2014). These buds begin to set as early as 2–3 weeks after flowering, so if you do not regulate the load, you are creating problems for the next year.

Comprehensive measures to smooth out alternate bearing:

• Pruning for the crop year – reduce the number of flower buds, leaving only strong, well‑placed branches.
• Additional feeding – in a crop year, be sure to apply fertilisers during fruit growth (June–July) so that the tree has strength for bud formation (Krivko, 2014).
• Irrigation – lack of moisture increases ovary drop and slows bud formation.

Conclusion: Regulating fruiting is not a one‑time action, but a system of annual measures including pruning, fertilisation, watering, and mechanical branch support. Timely thinning of ovaries will produce larger and sweeter fruits, and the tree will reward you with a crop in the next season as well.

Tree Inspection

Regular inspection is the basis of prevention. Inspect the cherry:

• In early spring, before bud swelling, to assess winter effects.
• After strong winds, snowfalls, and hail, to notice fresh damage.
• In autumn, before winter preparation, to identify problems and plan work.

What to look for:

• Cracks, frost cracks (deep longitudinal splits in bark and wood), bark peeling (Mikheev, Revyakina, 2004).
• Swellings, dark spots, gum exudation (amber or dark resin) – signs of diseases (bacterial canker, cytosporosis, moniliosis) (Webster et al., 1996; Buckingham, 2010).
• Signs of rodent activity – bark gnawing at the base of the trunk, especially in winter (Mikheev, Revyakina, 2004; Potapov et al., 2000).
• Dead patches of bark that easily separate from the wood.

When problems are found, do not delay treatment – bark heals slowly, especially in stone fruits.

Bark Cleaning

Dead, cracked bark is a refuge for pests (scale insects, mites, bark beetles) and disease pathogens. Moreover, old bark hinders trunk thickening and can compress the cambium.

How to clean properly:

1. Spread a tarp or cloth under the tree to collect all debris.

2. Use special scrapers or stiff (non‑metallic!) brushes. Metal brushes are too traumatic to living tissues.

3. Clean only dead, peeling flakes of bark. Do not scrape healthy, smooth bark – this exposes the cambium.

4. Work from top to bottom, from branches to the base of the trunk.

5. Burn the collected debris – it may be infested with pests (Mikheev, Revyakina, 2004).

Cleaning is done in autumn (before whitewashing) or early spring. Do not do this in wet weather – open bark areas are more easily infected.

Whitewashing

Whitewashing is one of the most important and underestimated procedures. Many consider it merely decorative, but in fact it is protection against winter sunburn, frost cracks, and pests.

Why whitewash:

• In winter, especially in February–March, the sun strongly heats the south and south‑west sides of the trunk. During the day, the bark warms up to +10…+15 °C, and at night it cools sharply. This causes burns and cracking – sunburn (Krivko, 2014; Potapov et al., 2000).
• Whitewash reflects sunlight, preventing the bark from overheating, and reduces the risk of damage.
• Lime solution has mild antiseptic properties, destroying fungal spores and overwintering stages of pests.

When and how to whitewash:

• Timing: in autumn, in November, and again in mid‑winter, during a thaw (January–February), if the whitewash has washed off (Krivko, 2014; Mikheev, Revyakina, 2004). Spring whitewashing (March–April) has only decorative value and does not protect against winter sunburn.
• What to whitewash: the trunk, crotches of scaffold branches, and bases of large branches.
• Height: at least 1–1.5 m from the ground, preferably up to the first scaffold branches.

Whitewash composition (tested recipe):

Per 10 L of water (preferably warm):

• 2–3 kg of freshly slaked lime (or chalk);
• 200–300 g of copper sulphate (for antiseptic action);
• 50–100 g of casein glue or PVA (for better adhesion and durability) (Krivko, 2014; Potapov et al., 2000).

Mix thoroughly to the consistency of thick sour cream and apply with a wide brush or sprayer. It is important that the whitewash lasts all winter.

Important: Do not use oil paints or other film‑forming compounds for whitewashing – they clog bark pores and hinder respiration.

Protection Against Mechanical Damage

The cherry trunk is easily injured by agricultural tools (cultivators, mowers), impacts, and rodents.

How to protect:

1. Fencing. In young orchards, install a metal or plastic mesh around the trunk to protect against accidental impacts and mice.

2. Winter wrapping. To protect against hares and mice, wrap trunks in autumn with spruce branches (conifer twigs), reeds, roofing felt, parchment paper, or special mesh (Mikheev, Revyakina, 2004; Potapov et al., 2000). Wrap tightly but not too tightly to avoid constricting the bark. Remove in spring when the threat of rodent hunger has passed.

3. Protection against “adventitious” roots. In cherry, especially on clonal rootstocks, it is possible for the tree to switch to its own roots if the graft union is buried. This weakens dwarfing and increases vigour. Therefore, ensure that the graft union is always 3–5 cm above soil level, and when hilling, pull soil away from the trunk (Potapov et al., 2000).

4. Careful work in the garden. When cultivating the trunk circle, do not damage the bark with mowers or cultivators. Keep a protective zone (20–30 cm from the trunk) where cultivation is done only by hand (Mikheev, Revyakina, 2004).

Wound Treatment

If damage has already occurred – do not wait for it to “heal by itself.” In stone fruit crops (cherry, sweet cherry), wounds heal slowly, especially if untreated. Gum exudation is the first sign that the tree is trying to isolate the wound, but if left untreated, it leads to weakening and branch death.

Step‑by‑step treatment algorithm (Mikheev, Revyakina, 2004; Potapov et al., 2000):

1. Cleaning. With a sharp garden knife, carefully clean the wound, removing all dead, detached, and diseased tissues down to healthy wood and bark. Do this so that the edges of the wound are smooth, without jagged edges. Cuts should be clean.

2. Disinfection. Treat the wound with a 3% solution of copper sulphate (300 g per 10 L water) or a 5% solution of iron sulphate (Mikheev, Revyakina, 2004). A 1% Bordeaux mixture can also be used. This kills fungal spores and bacteria.

3. Drying. Allow the wound to dry for several hours (in dry weather).

4. Sealing. Cover the wound with garden wax, a special sealing compound (e.g., “RanNet”), or a mixture of clay and cow dung (clay and fresh manure in equal parts, mixed with water to a paste) (Mikheev, Revyakina, 2004). The seal isolates the wound from air and moisture, preventing pathogens from entering.

5. Wrapping. If the wound is extensive, you can wrap it with a strip of clean cotton cloth or plastic film (but not tightly, to avoid a greenhouse effect). This accelerates healing.

Special case – ring damage to the bark.

If rodents (hares, mice) have gnawed the bark around the entire circumference of the trunk, disrupting sap flow, for young trees (up to 3–5 years) you can try to save the tree by cutting back to a healthy lower section. The entire above‑ground part is cut off above a healthy section of the scion (below the gnaw), leaving a stub 10–15 cm high. New shoots will grow from dormant buds, and a new crown can be formed. This method is effective only for young trees (Krivko, 2014). For mature trees with ring damage, chances are slim – they will have to be replaced.

Prevention: The Main Rule

The best treatment is prevention. Inspection, timely cleaning, whitewashing, protection against mechanical damage and rodents prevent 90% of bark problems. Remember that every wound on the trunk is a “signal” that you missed the right time. In cherry, as in other stone fruits, wound healing requires a lot of energy, so protect the bark from the very beginning.

Spring Work

Spring is the most critical period. How you “greet” the tree after winter affects the entire season.

Summer Care

In summer, the tree flowers, sets and develops fruit, and also forms flower buds for the next year. The main concerns are irrigation, feeding, pest and bird protection, and crown care.

Autumn Care

Autumn is the time to prepare for winter. Proper autumn work ensures successful overwintering and a good harvest next year.

Winter Preparation

In winter, cherry is in a dormant state, but this does not mean that care is unnecessary. The main threats are frost, sunburn, rodents, and branch breakage from snow.

Summary Seasonal Calendar

Spring Frosts

This is perhaps the most insidious factor. Cherry blooms early – in late April – early May, when the probability of return frosts is still high. Buds die at –2…–4 °C, open flowers at –1…–2 °C, and ovaries at –1…–3 °C (Mikheev, Revyakina, 2004; Potapov et al., 2000). Damaged pistils (the central part of the flower) turn black and die, and even with abundant flowering, there will be no fruit.

How to determine damage: In a healthy flower, the stigma of the pistil is yellow; in a damaged one, it is brown or black. If after flowering you see massive flower drop without fruit set – most likely frost is to blame (Mikheev, Revyakina, 2004).

Protection methods:

1. Passive methods (preventive):

• Choosing the right site. Do not plant cherry in lowlands, enclosed basins, or “cold pockets” where cold air stagnates. The best sites are south, south‑west, and west slopes (in the central zone) or north slopes (in southern arid regions) (Potapov et al., 2000; Trunov et al., 2012).
• Late‑flowering varieties. Choose varieties with late bloom that “escape” frost. In cherry, for example, the “Ben” group (in northern regions) (Hessayon, 1993).
• Shelterbelts. Forest belts and hedges slow down cold air movement and reduce frost risk (Agustí, 2010; Potapov et al., 2000).

2. Active methods (direct protection):

• Smoking. In advance (in the evening), prepare piles of wet straw, sawdust, leaves, peat mixed with soil. When the temperature drops to 0 °C, set them on fire so that they do not burn but produce dense smoke. Continue smoking for 1–2 hours after sunrise. At least 75–100 smoke piles are needed per hectare (Mikheev, Revyakina, 2004; Krivko, 2014). This method raises air temperature by 1–2 °C by trapping soil heat radiation.
• Sprinkling (spraying). Turn on fine‑spray sprinkling (small droplets) during the night before frost and continue until morning. When water freezes, it releases heat, and the ice protects flowers from critical temperatures. Important: sprinkling must be continuous, otherwise frozen droplets will damage the flowers (Krivko, 2014; Potapov et al., 2000).
• Covering. Small trees can be covered with agrotextile, spunbond, or several layers of paper. This is especially relevant for standard forms and young saplings (Mikheev, Revyakina, 2004).
• Heating. In commercial orchards, heaters, heat guns, or even used jet engines are used to mix warm and cold air (Krivko, 2014). In amateur gardens, this is expensive and complicated, but local heating (candles, fan heaters) is possible on small plots.

Physiological method (delaying flowering):

Spraying trees in late summer (August–September) with growth regulators (e.g., 0.001–0.0001% gibberellin or NAA solution) can delay bud opening in spring by 5–10 days (Krivko, 2014). However, this method gives variable results and requires experience. Not recommended for amateur gardens.

What to do after a frost:

If damage has occurred, do not rush to remove flowers. Give the tree time – often fruits set from those flowers that were partially damaged but retained a viable pistil. After flowering, perform a foliar feed with urea (40–50 g per 10 L water) – this helps the tree recover (Mikheev, Revyakina, 2004).

Drought and Heat

Cherry is more drought‑tolerant than, for example, apple or plum, but prolonged drought, especially during fruit growth, drastically reduces yield and berry quality (Potapov et al., 2000; Trunov et al., 2012). With insufficient moisture:

• fruits become smaller and dry;
• ovaries drop massively (June drop);
• shoot growth slows, impairing flower bud formation for the next year;
• winter hardiness decreases.

How to combat drought:

1. Proper watering. The main rule: water deeply and infrequently, not shallowly and often. Water should wet the root zone (40–60 cm). Watering rate for a mature tree – 50–80 L/m². Water into holes, furrows, or by drip, so that water does not evaporate from the surface (Mikheev, Revyakina, 2004; Krivko, 2014).

2. Mulching. A layer of organic mulch 6–8 cm (compost, straw, mown grass, bark) sharply reduces evaporation from the soil surface and retains moisture (Martin, 2019; Hessayon, 1993).

3. Sodding with mulching. In arid regions, it is better to keep the soil under black fallow or mulch, as grasses are strong competitors for moisture (Agustí, 2010).

4. Moisture‑recharging autumn irrigation. It creates a water reserve that helps the tree survive spring drought (Mikheev, Revyakina, 2004).

How to recognise moisture deficiency:

• Leaves lose turgor (droop), become dull, yellow, and curl.
• Young shoots grow poorly.
• Fruits begin to drop before ripening.

If you notice these signs, water the tree immediately (even if you have a different watering schedule).

Heat (above 30–35 °C):

In extreme heat, cherry can suffer from overheating of leaves and fruits. This is especially dangerous for sweet cherries and large‑fruited cherry varieties.

• Fine‑spray sprinkling on hot days (from 11 a.m. to 3 p.m.) lowers leaf temperature and reduces evaporation. Use small droplets (diameter 100–600 µm) (Krivko, 2014; Potapov et al., 2000).
• Shading – in the hottest years, you can throw a light shading net (30–40% shade) over the crown during the sunny half of the day.

Frost (Winter Damage)

Cherry, especially in the central zone and northern regions, can suffer from severe frosts. The most vulnerable parts:

• Flower buds – they die at –20…–25 °C, especially if frost occurs after a thaw (Mikheev, Revyakina, 2004). Cherry has a shorter deep dormancy period than apple, so thaws are especially dangerous for it.
• Trunk and scaffold branches – can develop frost cracks (deep longitudinal cracks in bark and wood).
• Root system – on dwarfing rootstocks, roots are shallow and may freeze in snow‑free winters.

How to protect:

1. Choosing winter‑hardy varieties and rootstocks. In regions with harsh winters, use zoned varieties (e.g., the “Ben” series for northern regions) and winter‑hardy rootstocks (seedling or frost‑resistant clonal) (Hessayon, 1993; Potapov et al., 2000).

2. Moisture‑recharging autumn watering – moist soil freezes more slowly, and roots are better protected (Mikheev, Revyakina, 2004).

3. Mulching the trunk circle for winter (layer 10–15 cm of peat, compost, dry leaves) – protects roots from freezing.

4. Snow retention. In snow‑free winters, rake snow towards the trunk to insulate the root collar. Snow is the best insulator.

5. Whitewashing – not only against sunburn but also against sharp temperature fluctuations (see Chapter 3).

What to do after a frosty winter:

In spring, when buds begin to open, determine the degree of freezing. To do this, cut several branches and place them in water at room temperature. If buds do not open or produce weak shoots – they have died. The degree of wood freezing is determined by the colour of the cut: healthy wood is light green or white; damaged wood is brown or dark (Mikheev, Revyakina, 2004). Based on these data, plan pruning: remove all dead branches, and preserve living ones as much as possible.

Rodents (Mice, Hares)

In winter, when food is scarce, rodents gnaw the bark from trunks and young shoots. Ring bark damage (around the entire circumference) leads to tree death, as root nutrition is interrupted (Mikheev, Revyakina, 2004; Potapov et al., 2000).

How to protect:

1. Wrapping trunks. In autumn, before frost, wrap trunks and bases of scaffold branches with spruce branches, roofing felt, tar paper, metal mesh (small mesh) or special plastic sleeves (Mikheev, Revyakina, 2004; Potapov et al., 2000). Wrap tightly but not too tightly to avoid constricting the bark.

2. Trampling snow. Pack down snow around the trunk – mice do not like to burrow through compacted snow (Mikheev, Revyakina, 2004).

3. Removing weeds and debris. Remove all weeds, leaves, branches, and plant debris from the garden – they serve as rodent shelters (Mikheev, Revyakina, 2004; Potapov et al., 2000).

4. Poison baits. As a last resort, in commercial orchards, poison baits are distributed. In amateur gardens, it is better to use mechanical traps and repellents if there is a risk of poisoning pets.

What to do if rodents have already gnawed the bark:

See Chapter 3 (Trunk and Bark Care) – wound treatment. In ring damage of young trees (up to 3–5 years), you can try to restore the tree by “cutting back to a lower healthy part” (cut above the gnawed area) (Krivko, 2014). For mature trees, chances are slim – the tree will have to be replaced.

Sunburn

The problem occurs in late winter – early spring, when the sun is already strong but nights are still frosty. The south and south‑west sides of the trunk heat up during the day to +10…+15 °C, and at night cool sharply. Cambium cells (the layer between bark and wood) break dormancy and die from cold. Bark peels, cracks, exposing wood (Krivko, 2014; Potapov et al., 2000).

How to prevent:

1. Autumn (November) whitewashing. Whitewash the trunk, crotches, and bases of scaffold branches with lime solution (see Chapter 3). Whitewash reflects sunlight and prevents bark overheating.

2. Whitewashing in mid‑winter (during thaw). If the whitewash has washed off or peeled, renew it in January–February (Krivko, 2014).

3. Training with a low trunk (40–60 cm) – the shorter the trunk, the lower the risk of burn. This is especially relevant for southern regions (Potapov et al., 2000).

4. Use of trunk‑forming rootstocks – special rootstocks with light‑coloured bark resistant to burns (e.g., Antonovka obyknovennaya). This is a complex technology, but it is used in commercial nurseries (Krivko, 2014).

Spring whitewashing (March–April) is only a decorative measure; it does not protect against winter sunburn. Whitewashing is effective only until the end of deep dormancy (until mid‑January) (Krivko, 2014).

What to do if a burn has already occurred:

Clean the damaged bark down to healthy tissue, disinfect the wound with 3% copper sulphate, and cover with garden wax (Mikheev, Revyakina, 2004; Potapov et al., 2000).

Strong Wind

Wind is a hidden threat to cherry. It not only breaks branches (especially in varieties with brittle wood and trees on dwarfing rootstocks) but also desiccates leaves, increases moisture evaporation from soil, and in winter contributes to freezing and sunburn (Agustí, 2010; Potapov et al., 2000).

How to protect:

1. Shelterbelts. The most effective method – planting trees and shrubs along the edge of the orchard (windbreak strips). The best design is permeable‑openwork (2–3 rows of tall trees with gaps), which does not create air stagnation but reduces wind speed by 30–40% at distances up to 10–15 times the tree height (Agustí, 2010; Potapov et al., 2000). Strips are established 2–3 years before orchard planting.

2. Tree supports. Young trees, especially on dwarf rootstocks, must be tied to stakes. Mature trees with flat crowns (palmette) may need wire supports (Potapov et al., 2000; Trunov et al., 2012).

3. Protection against mechanical damage. In windy regions, avoid acute branch angles – they are less strong and break more often during gusts (Potapov et al., 2000).

4. Winter shelter. In very windy regions, you can install windbreak screens made of mesh or reeds around young trees.

What to do if branches have broken:

Immediately remove broken branches, making a clean cut on healthy wood. If a branch is broken but “hanging on the bark,” carefully remove it, clean and seal the wound. Do not leave “stubs” – they can become entry points for infection (Mikheev, Revyakina, 2004).

Integrated Protection: A System of Measures

Protection against adverse factors is not a one‑time action but a system. No single method gives 100% guarantee, but their combination reduces risks to a minimum.

Removal of Dry and Damaged Branches

Dry, broken, frost‑damaged, and diseased branches are not just an aesthetic flaw. They serve as “entry gates” for pathogens (fungi, bacteria) and overwintering sites for pests (Buckingham, 2010; Cornell Guide, 2003). The longer such a branch remains on the tree, the higher the risk of infection spreading throughout the crown.

When and how to remove:

• Timing: sanitary pruning is done throughout the year as problem branches are found. The main volume – early spring (before bud break) and autumn (after leaf fall but before severe frost) (Mikheev, Revyakina, 2004; Potapov et al., 2000).
• Removal technique: cut the branch to the collar (at the ring swelling at the base) or, if thick, in two steps (first an undercut, then from above) to avoid bark tearing (Potapov et al., 2000). Do not leave stubs – they rot, become infection sources, and can lead to hollow formation (Krivko, 2014).
• If the branch is affected by disease (e.g., moniliosis, black canker), make the cut 5–10 cm below visible signs of infection, including healthy tissue (Buckingham, 2010).
• All cuts larger than 1 cm in diameter must be cleaned with a sharp knife and sealed with garden wax, “RanNet” paste, or oil paint on natural drying oil (Mikheev, Revyakina, 2004; Potapov et al., 2000).

Why it matters: Even a small dead branch can be colonised by fungal spores. In rain and wind, spores spread throughout the tree and to neighbouring plantings. Timely sanitary pruning is the most effective way to combat moniliosis, coccomycosis, bacterial canker, and cytosporosis (Webster et al., 1996; Cornell Guide, 2003).

Collection of Fallen Leaves and Fruits

In autumn, leaves and fruits fall, creating on the soil surface an ideal environment for overwintering fungal infections. The pathogens of coccomycosis, moniliosis, and other diseases overwinter precisely on plant debris (Buckingham, 2010; Mikheev, Revyakina, 2004). If you leave litter in the trunk circle, you are guaranteed a disease outbreak in spring.

What and how to collect:

1. All fallen leaves. They may be contaminated with fungal spores (coccomycosis, leaf spot). Rake them into piles and burn or remove from the site (Mikheev, Revyakina, 2004). Composting leaves is permissible only if you are sure they are healthy – but it is better to be cautious.

2. Drop fruits and mummified fruits. Fruits that have rotted on the tree or fallen are breeding grounds for brown rot and codling moths. Collect and destroy them (burn or bury deep in compost, not for use) (Mikheev, Revyakina, 2004; Cornell Guide, 2003).

3. Pruned branches. All branches, especially those with signs of disease, must also be removed from the garden and burned.

Collection time: In autumn, after main leaf fall (usually October–November) (Mikheev, Revyakina, 2004). In southern regions and during warm autumn, two rounds can be done – in October and November. Never leave leaves and fruits until spring – over winter they will decompose, but infection sources will remain.

Why it works: By removing leaf litter, you remove the bulk of pathogens that overwinter in it. This reduces the need for chemical treatments in spring by 50–70% (Potapov et al., 2000).

Removal of Plant Debris

Besides leaves and fruits, the garden accumulates:

• Weeds (especially perennial with rhizomes).
• Cut branches and shoots.
• Mummified berries remaining in the crown.

How to dispose properly:

• Burning – the most reliable way to destroy pathogens and pests. But only dry plant material can be burned in calm weather, observing fire safety (Mikheev, Revyakina, 2004).
• Deep incorporation into soil – weeds and leaves without signs of disease can be buried to a depth of at least 30–40 cm. But this is labour‑intensive, and some weed seeds may survive (Potapov et al., 2000).
• Composting – only healthy plant material, in a properly managed compost heap (with high temperature 55–70 °C) that ensures pathogen destruction (Martin, 2019). In amateur conditions, this is difficult to guarantee, so it is better to use burning or removal.

Special attention: do not leave mummified fruits in the crown over winter. They are not only a source of infection but also attract birds and pests (Buckingham, 2010). Remove them manually during autumn inspection.

Monitoring Tree Condition

Sanitary measures are not limited to autumn cleaning. Regular inspection and timely response to problems is “early diagnosis” that saves the tree from serious losses.

Inspection schedule:

• Early spring (before bud break): assess bark condition (cracks, frost cracks, peeling), buds (degree of freezing), branches (dry and broken) (Mikheev, Revyakina, 2004).
• During the growing season (especially in June–July): monitor leaf condition (spots, yellowing, curling), fruits (rot, deformation), presence of pests (Buckingham, 2010; Cornell Guide, 2003).
• In autumn (after leaf fall): assess overall condition, identify hidden damage, determine the scope of sanitary work.

Signs of problems requiring immediate intervention:

Important: If you notice mass signs of disease or severe pest damage, do not limit yourself to sanitary measures – chemical treatments will be required. But sanitary measures always come first: without removing infection sources, any spraying will be poorly effective (Cornell Guide, 2003; Potapov et al., 2000).

Sanitary Role of Inter‑Rows and Paths

Keep cleanliness not only in trunk circles but throughout the orchard.

• Regularly mow grass in inter‑rows. Tall grass is a refuge for rodents, pests, and a source of weed seeds (Agustí, 2010).
• Remove weeds from paths and shelterbelts.
• Destroy anthills and wasp nests if located close to trees.

Why it matters: In a clean orchard, air humidity is lower, ventilation is better, and therefore there are fewer conditions for fungal diseases. In addition, cleanliness facilitates inspection and all work.

Conclusion: A System, Not a One‑Off Action

Sanitary measures are a continuous process that you carry out year‑round. Remove diseased branches and fruits as soon as you notice them; do not wait for autumn. Collect and destroy leaf litter on time. Inspect trees regularly.

If you perform sanitary work systematically – every spring and autumn, and as needed in summer – you will minimise chemical treatments, get a healthier orchard, and higher yields of quality fruit. Remember: prevention is always easier and more effective than cure.