Raspberry

Origin from Wild Forms

Raspberry has been known to humanity since ancient times. The ancient Greeks and Romans mentioned this plant in their works. The Greek playwright Aeschylus, the "father of medicine" Hippocrates, the Roman writer Cato the Elder, and the naturalist Dioscorides described raspberry as a valuable food and medicinal plant. The very Latin species name Rubus idaeus derives from Mount Ida in Asia Minor (modern‑day Turkey), where, according to legend, raspberry grew in abundance (Hummer & Hall, 2013).

Interestingly, thornless (spineless) forms of raspberry were already known in antiquity, indicating long‑standing human attention to this plant (Hummer & Hall, 2013). Archaeological finds confirm the spread of raspberry with humans: raspberry seeds from Roman times have been discovered in ancient forts in Britain. Roman legionaries likely contributed to the spread of the crop throughout Europe (Hummer & Hall, 2013).

In Russia, raspberry has long accompanied the farmer literally "at every step". Wild raspberry often occurs on forest clearings, burnt areas, glades, and roadsides. This attests to the plant's high ecological plasticity and its ability to colonise human‑disturbed territories (Yaroslavtsev, 2003).

The Path into Cultivation

In Europe, raspberry began to be introduced into cultivation in the Middle Ages. In 17th‑century England, raspberries were already being grown for the London market by gardeners from Chiswick and Brentford – contemporaries of Shakespeare (Hummer & Hall, 2013). In 1771, William Prince first began commercial sales of raspberry nursery stock in New York, and by 1832 his son W. R. Prince published a pomological handbook describing 20 cultivars (Hummer & Hall, 2013).

The North American history of raspberry began with the importation of European varieties into the colonies in the 18th century. However, European varieties proved insufficiently adapted to harsh American winters and hot summers. This spurred the use of local wild forms – Rubus strigosus (American red raspberry). American wild forms were distinguished by hardier, thinner, taller, and more erect canes, and their berries were often rounder (Hummer & Hall, 2013).

A key step in the development of the modern cultivar range was the crossing of European (R. idaeus) and American (R. strigosus) raspberries. The cultivar 'Cuthbert', discovered around 1865 and probably a hybrid of the European 'Hudson River Antwerp' and a local wild form, is still used in breeding as a source of valuable traits (Hummer & Hall, 2013).

Development of Table Forms and Current Status

Intensive raspberry breeding in the 20th–21st centuries led to cultivars with large, sweet, aromatic berries, resistant to diseases and suitable for mechanised harvesting. However, the genetic diversity of modern cultivars is limited: most descend from approximately 20 parental forms, among which 'Lloyd George', 'Latham', 'Cuthbert' and others played key roles (Hummer & Hall, 2013).

A special direction is the creation of remontant (primocane‑fruiting, autumn‑bearing) cultivars that fruit on one‑year‑old canes. In Russia, outstanding results in this area were achieved by Professor I. V. Kazakov, who developed cultivars 'Babie Leto', 'Gerakl', 'Abrikosovaya', and others (Yaroslavtsev, 2003; Dankov, 2015).

Today, raspberry is one of the leading berry crops in the world. According to FAO data, world raspberry production in 2004 was about 389,000 tonnes, with plantings covering 195,000 acres (Rieger, 2010). Major producers (as of the early 21st century):

In Russia, according to data from the early 2000s, commercial raspberry plantings occupied about 2,000 hectares with an average yield of 18 dt/ha (1.8 t/ha) (Dankov, 2015). However, significantly larger areas of raspberry are found in private gardens and household plots – by some estimates, up to 20,000 hectares (Yaroslavtsev, 2003).

In the USA, the main commercial production is concentrated in Oregon, California, and Washington, with about 90% of the crop processed (Rieger, 2010). In warmer‑climate countries (Chile, Latin America), raspberries are grown for export to the Northern Hemisphere during winter months (Rieger, 2010).

Importance for the Gardener

Raspberry is attractive to amateur gardeners and farmers for several reasons:

1. Early bearing – already in the 3rd–4th year after planting, raspberry gives full yields (Dankov, 2015).

2. Long productive life – with good care, a plantation can bear fruit for 10–15 years (Yaroslavtsev, 2003).

3. High berry value – stable demand and high market prices make raspberry growing economically viable (Yaroslavtsev, 2003).

4. Variety diversity – the ability to choose plants for any region and for any purpose.

As one researcher aptly noted, raspberry possesses "extraordinary plasticity" (Yaroslavtsev, 2003), allowing it to be grown in very different climatic conditions – from the Kola Peninsula to the Far East, from Northern Europe to the subtropics.

The Genus Rubus

All raspberries, blackberries, and their hybrids belong to the large and diverse genus Rubus L., which includes, according to various estimates, from 120 to more than 350 species (Crandall, 1994; Rieger, 2010). The genus Rubus is distributed on all continents except Antarctica – from the Arctic to the tropics. It is divided into 12 subgenera, but for the gardener, three main ones are important:

For the gardener, the key difference between raspberry and blackberry is the way the fruit separates: with raspberry, the berry is picked without the white "plug" (the receptacle remains on the plant), while with blackberry it comes away with it (Crandall, 1994; Rieger, 2010). This is a diagnostic trait easily checked at harvest.

The Main Species – Rubus idaeus L. (Red Raspberry)

Rubus idaeus L. is the species to which almost all cultivated red and yellow raspberries belong. Within the species, botanists distinguish two subspecies (or, according to some taxonomists, two separate species):

All modern cultivars are hybrids of these two subspecies (Hummer & Hall, 2013). European cultivars contributed sweetness and aroma; American ones contributed winter hardiness and vigour. This explains why most cultivars adapted to Russia and Northern Europe have "American blood" in their pedigree.

Other Cultivated Raspberry Species

In addition to red raspberry, several other species are used in horticulture:

Related Species and Hybrids

Besides "pure" raspberries, interspecific hybrids of raspberry with blackberry are popular in horticulture. These are the so‑called raspberry‑blackberry hybrids:

These hybrids combine traits of both parents: berries are large, often without hollow core (like blackberry), but taste and aroma resemble raspberry. Their cultivation is more demanding – they are less winter‑hardy, require training, but for farmers growing gourmet products they are of interest (Yaroslavtsev, 2003; Rieger, 2010).

Practical Significance of Taxonomy for the Gardener

1. Choosing species for climate. For cold regions (Siberia, Urals, North‑West Russia, Scandinavia) prefer red raspberries with American blood – they are winter‑hardy to −35 °C. Black and purple raspberries, as well as blackberry hybrids, are better planted in milder conditions or under cover.

2. Propagation. Red raspberry easily spreads by root suckers. Black raspberry and raspberry‑blackberry hybrids produce no suckers – they are propagated by tip‑layering or green cuttings (Crandall, 1994; Yaroslavtsev, 2003). Knowing this saves time and effort.

3. Compatibility of cultivars. Most raspberries are self‑fertile (do not require pollinators), but cross‑pollination by bees increases berry size. However, if red and black raspberries are planted nearby, cross‑pollination may produce hybrid seedlings, which are best removed unless breeding work is intended.

4. Disease resistance. American subspecies often carry genes for resistance to viruses and fungal diseases. Therefore, modern resistant cultivars are always hybrids involving R. strigosus (Hummer & Hall, 2013).

Summary: The gardener need only remember that raspberry is a member of the genus Rubus, species R. idaeus (red) or R. occidentalis (black). Red raspberry can be summer‑bearing or remontant. Black is a separate species with a different propagation method and lower winter hardiness. Blackberry is a close relative, but its fruit separates with the receptacle. Raspberry‑blackberry hybrids (Loganberry, Tayberry, etc.) are a separate group for connoisseurs of exotic flavours.

Root System

The root system of raspberry is fibrous, consisting of:

• Rhizome – a perennial underground stem with a large reserve of renewal buds. The rhizome lives 8–12 years and is the "heart" of the bush.
• Adventitious (lateral) roots – branch from the rhizome in all directions and carry adventitious buds (dormant buds on roots), from which root suckers grow – the main material for propagation.
• Fine absorbing rootlets – provide nutrition.

In red raspberry, the bulk of roots (about 70–75%) lies in the upper 25–30 cm layer of soil, spreading laterally 30–60 cm from the bush. Individual roots descend to 1.5–1.8 m, but the majority is in the topsoil (Crandall, 1994; Funt, 2013).

Important for the gardener:

• Raspberry roots are shallow, therefore:
• the plant does not tolerate drought well – irrigation is required (especially during berry growth);
• soil around bushes is loosened no deeper than 5–7 cm to avoid damaging roots;
• mulching (peat, compost, straw) is the best way to retain moisture and preserve soil structure.
• Red raspberry produces root suckers – its natural way of spreading and filling space. If not managed, the row turns into a thicket.
• Black raspberry lacks root buds – new shoots grow only from the rhizome (Crandall, 1994; Yaroslavtsev, 2003). Therefore, black raspberry is not propagated by suckers, but only by tip‑layering or green cuttings.

Shoots (Canes)

The above‑ground part of raspberry consists of two types of shoots:

Life cycle of a shoot:

1. Spring of first year – a green shoot (primocane) emerges from the rhizome or root sucker. It grows all summer, reaching 1.5–3 m depending on cultivar and conditions.

2. Autumn of first year – the primocane stops growing, and buds form in leaf axils. They undergo differentiation (transition from vegetative to generative – floral) as temperatures drop and day length shortens.

3. Winter – the shoot enters dormancy; it requires a certain amount of chill (800–1600 hours at 0…+6 °C) for normal spring budbreak.

4. Spring of second year – from buds on last year's shoot (now a floricane), fruiting laterals with buds and flowers emerge. New replacement shoots grow from the ground simultaneously with fruiting.

5. Summer of second year – the floricane fruits; after harvest, it begins to die (tips first, then entirely).

6. Autumn of second year – the floricane dries up; it is cut out at the base.

Features of individual types:

• In red raspberry, primocanes usually do not branch (unless the tips are pinched). They are erect or slightly arching.
• In black raspberry, primocanes are arched; their tips bend to the ground and can root – this trait is used for propagation.
• In remontant cultivars, primocanes flower and bear fruit already in the first year on their tips. After that, the upper part dies, while the lower part overwinters and gives a summer crop the next year (like regular cultivars).

For the gardener, this means:

• If we cut out a fruited cane immediately after harvest, we improve light and air access to young shoots and reduce disease risk.
• If we leave a cane for a second year and then a third – it will be dead, only shading the bush.

Shoot‑bearing capacity (number of shoots per metre of row) varies greatly among cultivars: from 10–15 (compact) to 40 and more (vigorous spreading, e.g., 'Lazarevskaya'). This must be considered at planting: for high‑suckering cultivars, leave more space or thin more often (Yaroslavtsev, 2003).

Leaves

Leaves of raspberry are compound, imparipinnate, usually consisting of 3–5 (sometimes 7) leaflets on a common petiole. The terminal leaflet is the largest, the lateral ones smaller. The leaf surface may be smooth or pubescent, with or without a waxy bloom – these are cultivar traits.

The leaf blade lives about 2–3 months, then ages and falls. A healthy leaf canopy is the key to good yield: photosynthesis in leaves supplies sugars to the berries.

Practical significance: Observing the leaves is the first method of diagnosing problems. Yellowing, curling, spots, premature fall signal diseases, pests, or nutrient deficiencies.

Buds

In leaf axils on the shoot, buds are initiated. In red raspberry, one node may have 1–3 buds – primary, secondary, and additional. The most viable buds are located in the middle part of the shoot (from 30 cm above ground to 1.5 m). Apical buds are often weaker and produce small berries, so they are recommended to be removed during pruning (Crandall, 1994).

By autumn, the buds are already formed and are in organic dormancy, which is broken only after exposure to low temperatures (vernalisation). In some cultivars (remontant), flower buds are initiated on primocanes as early as June–July and bloom in the same season.

Flowers

Raspberry flowers are bisexual, with five white or pinkish petals, many stamens and pistils. They are arranged in racemose inflorescences – 5 to 15 flowers per raceme (Crandall, 1994; Funt, 2013). Flowering starts from the top flowers and gradually moves downward, so berries ripen not simultaneously but over an extended period.

Flowers contain nectar and are abundantly visited by bees, bumblebees, and other insects. Although most cultivars are self‑fertile (pollinated by their own pollen), cross‑pollination improves fruit set and increases berry size. In bad weather during flowering (rain, cold), insect activity decreases, and yield may be lower.

Fruits

The raspberry fruit is an aggregate of drupelets (an aggregate fruit). It consists of 20–75 or more small fruitlets – drupelets, each containing a single seed inside a hard shell. The drupelets are connected by fine hairs and attached to the central receptacle (torus) (Crandall, 1994; Funt, 2013).

Key difference from blackberry: at maturity, the drupelets of raspberry separate easily from the receptacle, and the berry is picked as a "cap" – hollow inside. The receptacle remains on the plant. In blackberry, the receptacle comes away with the fruit.

What determines berry size and quality:

• Number of pollinated ovaries (more means larger berry).
• Water and nutrient supply during growth (first 10 days after pollination – cell division; then cell expansion and sugar accumulation).
• Cultivar predisposition.

Average berry weight in modern cultivars is 2.5–6 g, and in some large‑fruited ones ('Patricija', 'Gerakl') up to 10–12 g. In wild forms, weight rarely exceeds 1–1.5 g.

Overall Life Cycle of the Plant

Raspberry is a perennial shrub with periodic renewal. It can grow in one place for 10–15 years. The highest productivity is reached at 3–5 years, then gradually declines due to disease accumulation, rhizome ageing, and overcrowding.

Growth pattern by year:

• 1st year after planting – 1–3 shoots emerge from the plant; if a remontant cultivar is planted, it may give a trial crop in autumn.
• 2nd–3rd year – the bush expands, yield increases.
• 4th–6th year – peak yield.
• 7th–10th year – yield may be maintained with rejuvenating pruning but gradually falls.
• 10–15 years – plantation is usually grubbed out (Dankov, 2015; Yaroslavtsev, 2003).

Practical Conclusions from Botanical Features

Summary: Raspberry is a plant with shallow roots and a biennial shoot cycle. Understanding this cycle (primocane → floricane → dieback) is the basis of all agronomic practices. Proper pruning and shoot regulation are the key to large, sweet berries. The next chapter will cover ecological requirements: where and how to plant raspberry so that it feels comfortable.

Climate in General

Raspberry performs best in a temperate climate with cool summers and a sufficiently snowy but not too harsh winter. Optimal regions are those with a sum of active temperatures (above +10 °C) of 1300–1600 °C during the growing season for summer cultivars, and 2000–2800 °C for remontant types to allow full ripening (Yaroslavtsev, 2003).

For the gardener, this means that in regions with short, cool summers (northern European Russia, Urals, Siberia, Scandinavia) one should rely on early‑ripening summer cultivars and on remontant cultivars with very early ripening (e.g., 'Babie Leto 2', 'Gerakl') that produce their crop before autumn frosts. In warmer areas (southern Russia, Central Europe, USA) the choice of cultivars is wider.

Air Temperature

Light

Raspberry is a sun‑loving plant. It requires full sun for most of the day. Under shade (even midday), one observes:

• elongation and thinning of canes;
• reduced berry size;
• lower sugar content;
• increased susceptibility to fungal diseases due to poor air circulation.

The exception is hot southern regions (subtropics, southern USA, Mediterranean), where light midday shade can protect berries from overheating and sunburn (Buckingham, 2010). In temperate climates, plantings are placed in open, well‑lit areas.

Moisture

Soils

Wind

Raspberry needs protection from strong winds:

• In summer, wind breaks shoots, knocks off flowers and berries, and damages leaves.
• In winter, wind blows snow away, exposing canes, and causes desiccation – one of the reasons for winter death.
• Windy weather favours the spread of fungal infections through micro‑injuries on stems.

Protective measures:

• Planting on the leeward side of buildings, fences, hedges.
• Creating shelterbelts or windbreaks from fast‑growing trees (birch, willow, larch) around the perimeter.
• Using a trellis – it holds canes from breakage by wind.

Relief

Micro‑relief of the site greatly affects growing conditions for raspberry:

Recommendation: choose a flat site or a gentle south‑west slope (for early warming), protected from prevailing winds. Avoid closed basins with poor air circulation.

What if Conditions Are Not Ideal?

Raspberry is a plastic crop. Even if the site does not meet all the "golden" standards, one can adapt:

Summary: Raspberry prefers a sunny, wind‑protected site with fertile, slightly acidic, well‑drained soil and adequate but not excessive moisture. However, wise cultivar selection and agronomic practices allow successful cultivation in very diverse conditions. The next chapter will cover the physiological stages of plant development – this will help plan care throughout the season.

Biennial Shoot Cycle – the Basis of Physiology

The main physiological feature of raspberry is the biennial development cycle of above‑ground shoots combined with a perennial root system. This cycle determines all seasonal work:

In remontant cultivars, this cycle is compressed: on primocanes of the first year, not only vegetative but also generative (flower) buds are formed, and they manage to bear fruit in autumn of the same year (Funt, 2013; Crandall, 1994).

Dormancy and Vernalisation (Cold Period)

In autumn, when shoots finish growth, processes of winter preparation start. This is the dormancy phase, which passes through two stages:

1. Organic (deep) dormancy – buds do not sprout even in warmth. To break this state, the plant requires a certain number of chill hours (temperature 0…+6 °C). This requirement varies among cultivars:

2. Imposed dormancy – after the chill requirement is satisfied, buds are ready to grow but do not start due to low air temperatures.

Practical significance:

• If winter was too warm (insufficient chill hours), buds break unevenly, yield declines.
• In warm regions (subtropics), low‑chill cultivars (with 400–600 hours) are specifically selected for summer types (Funt, 2013).
• For forcing raspberry in greenhouses (winter), plants are artificially "tricked" by giving them a cold period in cold storage.

Budbreak and Spring Growth

When the chill minimum is passed and the average daily temperature rises above +5…+7 °C, sap flow begins. Buds on floricanes swell and start growing. From buds on the rhizome and roots of primocanes, new replacement shoots appear.

Key factors of spring growth:

• Temperature – the warmer (up to +18…+22 °C), the faster the growth. However, sharp temperature fluctuations can damage tender tissues.
• Moisture – sufficient soil moisture is required for budbreak and initial growth. Dry spring delays growth.
• Nutrition – especially nitrogen, which stimulates new cell formation. Therefore, the first fertilisation is done in spring, before flowering.

Replacement shoots in red raspberry arise from buds on the rhizome and on roots (root suckers). In black raspberry – only from buds on the rhizome (Crandall, 1994).

Flower Bud Initiation (Differentiation)

In late summer – early autumn, when shoot growth slows, the buds in the axils of primocanes begin the transition from vegetative to generative state – initiation of flower buds. This process is called differentiation.

Sequence of differentiation:

1. First, the terminal (apical) bud differentiates.

2. Then the process proceeds downwards along the shoot.

3. The lower buds (at the base) remain vegetative – they will give replacement shoots the next year.

Factors affecting differentiation:

• Day length – shortening days in autumn trigger the process.
• Temperature – moderate cooling accelerates differentiation.
• Plant condition – well‑developed, healthy shoots with large leaves initiate more flower buds.

In remontant cultivars, differentiation occurs in summer (June–July), under long days, allowing them to bloom and bear fruit in the first year (Funt, 2013).

Flowering and Pollination

Raspberry flowers are bisexual (each flower has both stamens and pistils). Most cultivars are self‑fertile, i.e., they can be pollinated by their own pollen. However, cross‑pollination by insects improves fruit set and berry size.

Physiology of flowering:

• Flowering starts from the upper flowers of the raceme and gradually spreads downwards. Thus berries ripen not simultaneously but over 2–4 weeks.
• Each flower remains open for 3–5 days.
• To form a full berry, pollination of 80–100 pistils out of 100–150 available is required (Crandall, 1994).

What hinders pollination:

• Cold, rainy, or windy weather during flowering reduces bee activity.
• Lack of nearby hives or wild pollinators.
• Application of insecticides during flowering (they kill bees).

For the gardener: attract bees to the plot – plant nectar‑producing plants, do not spray chemicals during bloom. In calm, sunny weather, pollination is best.

Fruit Growth and Development

After pollination, berry development begins. It passes through three phases (Crandall, 1994; Funt, 2013):

Main practical conclusion: in the last phase (2–3 weeks before harvest), water shortage dramatically reduces berry size. Therefore, irrigation during berry filling is essential – even if it seems there has been enough rain.

Ripening and Senescence

At ripening:

• Berry colour changes from green to the characteristic colour for the cultivar (red, yellow, black).
• Sugar content increases, acidity decreases.
• Ethylene release increases (gas that stimulates ripening), but raspberry is a non‑climacteric fruit – it does not have a sharp respiratory peak like apples or bananas. This means that a green‑picked berry will not ripen and will not become sweeter (Funt, 2013; Crandall, 1994).

Important for the gardener: pick raspberries only when fully coloured and easily separating from the receptacle. Picked earlier, they will remain sour and hard. The exception is processing for jam or freezing, where slightly underripe berries (they are firmer) are acceptable.

After fruiting, the floricane begins to die – first the tips, then the whole shoot. The dying process takes several weeks. By autumn, the shoot is completely dry and is removed.

Compensatory Mechanisms (Why Raspberry Forgives Mistakes)

Raspberry has a remarkable ability – compensation (Crandall, 1994; Funt, 2013). This means that if one yield factor is reduced, the plant can partially compensate through others:

This does not mean we can neglect care: compensation works only within certain limits. But it explains why raspberry often gives acceptable yields even with imperfect care – it "tries" for us.

Developmental Stages in the Seasonal Calendar (for Practice)

Specific Physiology of Remontant Cultivars

Remontant cultivars are a special physiological group. Their main difference: flower buds on primocanes are initiated as early as June–July (not in autumn), and flowering begins on shoot tips in July–August. Fruits ripen from late summer until frost.

Advantages of this physiology:

• Crop does not depend on winter damage – canes are either mown in autumn or die anyway.
• Two crops per year can be obtained – summer on floricanes and autumn on primocanes (but in temperate climates, often only one autumn crop is taken for simplicity).

Drawback: in regions with short summers, the autumn crop may not fully ripen, so for such zones choose the earliest remontant cultivars (Yaroslavtsev, 2003; Dankov, 2015).

Practical Takeaways from Physiology

1. Watering determines berry size. During the filling phase (2–3 weeks before harvest), water shortage is the main cause of small fruit.

2. Nitrogen in spring, potassium and phosphorus in summer. Nitrogen stimulates shoot growth, but during fruiting its excess worsens berry taste and delays wood maturation.

3. Pruning is not "surgery" but helping the plant. Removing fruited canes frees resources for young ones.

4. Raspberry "forgives" mistakes, but do not abuse this. The best yield comes with systematic but not excessive care.

5. Watch the weather. In drought – irrigate; in rain – prevent fungal diseases; in cold – protect flowers.

Summary: Raspberry physiology is a cycle: growth → dormancy → flowering → fruiting → senescence. Each stage requires specific conditions: warmth, light, water, nutrition. Understanding the stages allows planning care exactly "to the plant's needs", not just "by calendar". The next chapter will cover the chemical composition of the berries – the very reason all this is undertaken.

Overall Chemical Composition (per 100 g fresh berries)

Sources: Crandall (1994), Rieger (2010), Yaroslavtsev (2003)

Note: raspberry is a low‑calorie berry (about 50 kcal per 100 g). It is rich in dietary fibre, which improves digestion and gives a feeling of fullness. Sugars are predominantly fructose and glucose, making it suitable for diabetics in moderate amounts (glycaemic index of raspberry is low).

Vitamin Profile – the Main Wealth of Raspberry

Raspberry is a champion among berries for many vitamins. Key vitamins and their significance are listed below.

Mineral Elements

Raspberry is rich in macro‑ and microelements (Crandall, 1994; Rieger, 2010; Yaroslavtsev, 2003):

Especially important: raspberry is rich in iron and copper, which participate in blood formation – hence raspberry has long been recommended for anaemia. Potassium makes it useful for heart patients (removes excess fluid, lowers blood pressure).

Polyphenols, Anthocyanins, and Ellagic Acid – the "Super‑Ingredients"

Modern research has revealed high levels of phenolic compounds in raspberry – natural antioxidants that protect the body from free radicals, slow ageing, and reduce the risk of chronic diseases (Funt, 2013).

Data from Funt (2013), Hecht et al. (2006), Stoner et al. (2007)

Antioxidant activity (ORAC – Oxygen Radical Absorbance Capacity) of raspberry is very high – one of the highest among berry crops. This means that raspberry consumption helps neutralise oxidative stress in cells.

Dietary Fibre

Raspberry contains 3–7 g of dietary fibre per 100 g (depending on cultivar and ripeness). These are predominantly insoluble fibres (cellulose, hemicellulose) and pectic substances. Raspberry fibre:

• stimulates intestinal peristalsis;
• binds and removes toxins, cholesterol;
• gives a feeling of satiety with low calorie content.

This makes raspberry useful for people with overweight, constipation, and lipid metabolism disorders.

Medicinal and Preventive Properties

Raspberry has been known as a medicinal plant since ancient times (Hummer & Hall, 2013). Modern medicine confirms many of its effects:

What is Lost During Processing and How to Preserve Benefits

Recommendation for the gardener: for maximum benefit, eat raspberries fresh in season. For long‑term storage, the best method is quick freezing (at −18 °C or below). Berries keep their shape and nutrients well. Jam and preserves are tasty treats, but nutritionally they are inferior to fresh and frozen raspberries.

Raspberry in the Diet – How Much and How to Eat

For preventive effect, 150–200 g of fresh berries per day in season is sufficient. Frozen raspberries can be added to porridge, yoghurts, smoothies, desserts. Dried berries and leaves are brewed as tea – this helps with colds.

Important: raspberry contains natural salicylates and may cause allergies in people with aspirin intolerance. It is also contraindicated in exacerbations of gastric ulcers and gastritis with high acidity due to organic acids (malic, citric, salicylic).

Practical Conclusions from Chemical Composition

Summary: raspberry is not only tasty but also exceptionally healthy. It is rich in vitamins (C, B9, E, A), trace elements (potassium, iron, manganese), fibre, and powerful antioxidants. Its medicinal properties – antipyretic, anti‑inflammatory, anti‑cancer, cardioprotective – are supported by scientific research. To preserve the most benefits, it is best to eat raspberries fresh or frozen, rather than as jam with sugar. Growing raspberries is an investment in the health of the whole family.

1. By Fruiting Type – the Main Division

This is the most important trait for the gardener, determining pruning and management systems.

(Buckingham, 2010; Funt, 2013; Yaroslavtsev, 2003)

2. By Berry Colour

(Buckingham, 2010; Yaroslavtsev, 2003)

3. By Ripening Time (for Summer‑bearing)

(Yaroslavtsev, 2003; Buckingham, 2010)

4. By Shoot Growth Habit and Presence of Thorns

(Yaroslavtsev, 2003; Buckingham, 2010)

5. By Suckering Ability (number of suckers)

This trait is important for planning row width and labour for pruning.

(Yaroslavtsev, 2003)

Practical significance: if you plant raspberry for sale or on a large area, low‑suckering cultivars reduce pruning labour. If your goal is rapid propagation, choose high‑suckering ones.

6. By Purpose (Use)

(Buckingham, 2010; Yaroslavtsev, 2003)

7. By Winter Hardiness and Regional Adaptation

(Yaroslavtsev, 2003; Buckingham, 2010)

8. By Growing System (Training System)

Raspberry Cultivars: Examples by Main Categories (Summary Table)

Brief Glossary of Terms (for Amateur Gardeners)

• Primocane – first‑year shoot.
• Floricane – second‑year shoot (fruiting).
• Remontant cultivar – fruits on first‑year shoots.
• Root suckers – new shoots growing from buds on roots (characteristic of red raspberry).
• Trellis – support structure of posts and wire for tying canes.
• Differentiation – process of conversion of a vegetative bud into a flower bud.
• Chill hours – number of hours with temperature 0…+6 °C required to break dormancy.

Summary: All the diversity of raspberry can be described using several classification traits: fruiting type (summer / remontant), berry colour, ripening time, growth habit, presence of thorns, suckering ability, purpose, winter hardiness, and growing system. Understanding these categories is the basis for an informed choice of cultivar for your plot. In the next, final chapter, we will give a step‑by‑step guide on how, based on your conditions and goals, to select the cultivars and growing system that suit you.

Step 1. Define Your Goals

Before choosing a cultivar, clearly answer the questions:

Step 2. Assess Your Climate and Site

Step 3. Decide Which Fruiting Type to Choose

Step 4. Select Cultivars by Key Characteristics

Step 5. Choose a Growing System (Training System)

Step 6. Consider Constraints and Risks

Step 7. Make the Final Choice – Step‑by‑Step Algorithm

Algorithm for the gardener:

1. Write down your conditions: region, average winter temperatures, soil type, plot size, sun hours.

2. Define the main goal: for yourself, for sale, for processing, for health.

3. Choose fruiting type: summer or remontant (depending on time you are willing to spend on care and climate).

4. Choose colour: red, yellow, black, or purple (by taste and purpose).

5. Determine desired ripening time: early, mid‑season, late (for conveyor – combination).

6. Consider additional traits: thorns (prefer thornless if hand‑picking), shoot height (for ease of covering), suckering ability (to control spread), disease resistance.

7. Make a short list of cultivars (3–5 names) that meet most requirements.

8. Consult local gardeners or nurseries – which cultivars have performed well in your region.

9. Buy verified planting material from nurseries, preferably certified (virus‑free).

Example choice for a typical gardener in central Russia:

• Conditions: loam, moderate winters, 600 m² plot, want berries for family and for jam.
• Goal: fresh consumption + freezing.
• Choice: plant 3 bushes of early summer ('Meteor' or 'Novost Kuzmina') for early season, 3 bushes of mid‑season summer ('Balsam' or 'Sputnitsa') for main crop, and 3–4 bushes of remontant ('Gerakl' or 'Autumn Bliss') for autumn consumption. Thornless or lightly thorny for ease of picking.

Summary Table – "Cheat Sheet" for Selection

Final Advice

Raspberry is a grateful crop. Even with minimal care, it will give a yield, and with proper management it will delight you with an abundance of large, sweet, healthy berries. Do not be afraid to experiment: plant 2–3 different cultivars, observe which grow best in your conditions, and after a couple of years you can create your own "golden collection". Start small, watch your plants, and they will reward you with a generous harvest.