How to Grow Rhubarb – Complete UK Planting, Feeding and Harvesting Guide

If there’s one crop that deserves a permanent place on a UK allotment, it’s rhubarb.

Once established, rhubarb can produce delicious stalks year after year, making it one of the most rewarding perennial crops you can grow.

It’s relatively straightforward to look after, tolerates cold winters and can provide generous harvests during spring and early summer.

Whether you enjoy homemade rhubarb crumble, rhubarb and custard, jam or simply stewed rhubarb, there’s something satisfying about harvesting fresh stalks from your own garden.

Here at Gardening with Ben, I’ve always enjoyed growing crops that return each year without needing to be started again from seed.

Rhubarb is particularly useful because, with the right care, an established crown can remain productive for many years.

However, there are a few important things to understand.

Planting depth, soil preparation, watering, feeding and harvesting all affect how well rhubarb grows.

One of the biggest mistakes gardeners make is harvesting too much from a young plant before it has established a strong root system.

In this complete UK rhubarb-growing guide, we’ll look at everything you need to know, including choosing varieties, planting crowns, feeding, watering, dividing established plants, forcing early stalks and dealing with common problems.

What Is Rhubarb?

Rhubarb, Rheum × hybridum, is a hardy herbaceous perennial grown for its edible leaf stalks.

Although it’s commonly used in desserts and treated as a fruit in the kitchen, botanically it is a vegetable.

The plant produces large leaves supported by thick, fleshy stalks that can range from green to deep red depending on the variety.

During autumn, the foliage dies back and the plant enters winter dormancy.

New shoots emerge from the crown as conditions improve in spring.

Is Rhubarb Easy to Grow?

Yes.

Rhubarb is generally easy to grow in the UK when planted in suitable conditions.

It prefers fertile, moisture-retentive but well-drained soil and benefits from a sunny or lightly shaded position.

Once established, it can tolerate cold weather very well.

However, it dislikes prolonged waterlogging and can struggle during severe summer drought.

How Long Does Rhubarb Live?

A healthy rhubarb plant can remain productive for many years.

Some established crowns continue growing for decades.

However, older plants may eventually become congested or less productive and benefit from division.

1. Choosing the Best Rhubarb Varieties for UK Gardens

There are several excellent rhubarb varieties available in the UK.

Different varieties vary in stalk colour, vigour, flavour and cropping season.

Rhubarb ‘Timperley Early’

‘Timperley Early’ is popular for its early cropping habit.

It’s often chosen by gardeners who want an early spring harvest.

It’s also suitable for forcing.

Rhubarb ‘Victoria’

‘Victoria’ is a traditional, vigorous variety.

It produces substantial crops when grown in suitable conditions.

Its stalks can contain both red and green colouring.

Rhubarb ‘Stockbridge Arrow’

‘Stockbridge Arrow’ is valued for its attractive red stalks and productive growth.

It can be a good choice for established allotment beds.

Rhubarb ‘Champagne’

‘Champagne’ is another variety associated with early, tender stalks.

It’s popular among gardeners interested in forcing rhubarb.

Does Red Rhubarb Taste Sweeter?

Not necessarily.

Stalk colour isn’t a reliable indicator of sweetness.

Flavour depends on variety, growing conditions and harvesting stage.

Gardening with Ben tip: When choosing rhubarb, look beyond stalk colour. Consider how much space you have, when you want to harvest and whether you’re interested in forcing an early crop.

2. When Is the Best Time to Plant Rhubarb in the UK?

The best time to plant bare-root rhubarb crowns is during the dormant season.

In the UK, this is generally between November and March, provided the soil isn’t frozen or waterlogged.

Autumn Planting

Late autumn can be an excellent time to plant rhubarb.

The soil may still retain some warmth, allowing roots to begin establishing before winter.

Winter Planting

Dormant crowns can be planted during suitable winter conditions.

Avoid planting into frozen or saturated soil.

Early Spring Planting

Late winter and early spring are also suitable.

Plant before strong new growth develops where practical.

Can You Plant Pot-Grown Rhubarb?

Container-grown rhubarb can be planted at other times of year if conditions are suitable.

However, avoid planting during extreme heat, drought or waterlogging.

Water carefully while the plant establishes.

3. Where Should You Plant Rhubarb?

Choosing the right location is important because rhubarb can occupy the same position for many years.

Sunlight Requirements

Rhubarb generally grows best in full sun or light partial shade.

In very shaded positions, growth may become weaker and yields may decline.

Soil Requirements

Rhubarb prefers:

• Fertile soil.
• Good moisture retention.
• Adequate drainage.
• Plenty of organic matter.
• A reasonably deep rooting area.

Avoid Waterlogged Soil

Although rhubarb needs moisture during active growth, the crown can rot if it sits in saturated soil for prolonged periods.

Give Rhubarb Enough Space

Mature plants can become substantial.

Allow approximately 90 cm to 1.2 m between plants, depending on the variety and growing conditions.

Check the supplier’s recommended spacing.

Can Rhubarb Grow Near Other Vegetables?

Yes, but remember that its large leaves can shade nearby crops.

Give it a permanent position where it won’t interfere with annual vegetable rotations.

4. How to Plant Rhubarb Crowns Step by Step

Planting rhubarb correctly helps establish a healthy plant that can remain productive for years.

Step 1: Prepare the Ground

Remove perennial weeds.

Loosen compacted soil when conditions are suitable.

Incorporate suitable mature compost or well-rotted organic matter if needed.

Step 2: Dig a Generous Planting Hole

Make the hole wide enough to accommodate the crown and roots without forcing them into a tight space.

Step 3: Position the Crown

Place the crown so the buds are at or just above the finished soil surface, following the supplier’s instructions.

Avoid burying the crown deeply because this can increase the risk of rotting.

Step 4: Backfill Carefully

Return the soil around the roots.

Firm gently to remove large air pockets.

Avoid excessive compaction.

Step 5: Water Appropriately

Water after planting if the soil is dry.

If the soil is already moist, avoid unnecessary watering.

Step 6: Apply Mulch

Add suitable organic mulch around the plant.

Keep the crown itself uncovered.

Step 7: Allow the Plant to Establish

Avoid harvesting from newly planted rhubarb during its first growing season.

This allows the plant to direct energy into developing a strong root system.

5. How to Grow Rhubarb from Seed

Although rhubarb is commonly grown from crowns, it can also be grown from seed.

However, seed-grown plants may vary in their characteristics.

When to Sow Rhubarb Seeds

Rhubarb seeds can be started under protection in spring.

Use suitable seed compost and follow the seed supplier’s temperature recommendations.

How to Sow

Fill pots or seed trays with compost.

Sow the seeds at the recommended depth.

Water gently.

Keep the compost moist but not waterlogged.

Growing On

Once seedlings are large enough to handle, transplant them into individual pots if necessary.

Grow them on until they’re strong enough for planting outdoors.

Will Seed-Grown Rhubarb Be Identical?

Not always.

Seedlings can vary in vigour, colour and flavour.

Named varieties are usually more reliably maintained by division.

How Long Until Harvest?

Seed-grown rhubarb generally needs time to establish before regular harvesting.

Don’t rush the process.

6. How to Water Rhubarb Correctly

Rhubarb produces large leaves and substantial stalks, so it needs sufficient moisture during active growth.

However, the soil should not remain permanently saturated.

Watering Newly Planted Rhubarb

Check the soil regularly during the first growing season.

Water during dry spells.

Aim to keep the root zone reasonably moist while allowing adequate drainage.

Watering Established Rhubarb

Established plants often tolerate short dry periods.

However, prolonged drought can reduce growth and future productivity.

Water Deeply

During dry weather, apply water slowly around the root area.

Avoid repeatedly wetting only the soil surface.

Use Mulch

A suitable mulch can help retain moisture and reduce competition from annual weeds.

Signs of Water Stress

Possible symptoms include wilting, reduced stalk growth and prematurely ageing leaves.

Remember that wilting can also occur in waterlogged soil, so check moisture before watering.

7. What Is the Best Feed for Rhubarb?

Rhubarb is a vigorous perennial and benefits from fertile soil.

However, feeding should be balanced.

Homemade Compost

Mature garden compost is useful for maintaining soil organic matter.

Apply it around the plant without burying the crown.

Well-Rotted Manure

Suitable well-rotted manure can help improve soil and provide nutrients.

Avoid piling it directly over the crown.

General-Purpose Fertiliser

Where soil fertility is low, a suitable balanced fertiliser may be useful during the growing season.

Follow the manufacturer’s application rates.

Should You Use High-Nitrogen Feed?

Nitrogen supports leafy growth, but excessive applications can create nutrient imbalances.

Avoid assuming that more feed always produces better rhubarb.

When Should You Feed Rhubarb?

Early spring is a common time to assess feeding needs as growth begins.

Organic mulches may also be applied during autumn or winter, provided the crown remains exposed.

Gardening with Ben tip: Healthy soil and consistent moisture are often more important than repeatedly applying fertiliser.

8. How to Mulch Rhubarb

Mulching helps protect the soil and conserve moisture.

Suitable Mulches

You can use:

• Mature garden compost.
• Well-rotted manure.
• Leaf mould.
• Suitable composted organic materials.

When to Mulch

Autumn and early spring are useful times.

How to Apply

Remove weeds from around the plant.

Spread mulch over the surrounding soil.

Keep it clear of the central crown and developing buds.

Why Keep the Crown Uncovered?

Deeply burying the crown under wet organic material may encourage rot.

The growing points need suitable conditions to emerge in spring.

9. When Can You Start Harvesting Rhubarb?

One of the most important rules when growing rhubarb is not to harvest too early from young plants.

First Year After Planting

Avoid harvesting stalks during the first growing season.

Allow the plant to establish.

Second Year

A small harvest may be possible if the plant is growing strongly.

However, avoid removing too many stalks.

Third Year Onwards

Well-established plants can generally support regular seasonal harvesting.

When Is Rhubarb Ready?

Harvest when stalks are a useful size for the variety.

There’s no single correct stalk length.

The stalks should be firm and well developed.

Typical UK Harvesting Season

Rhubarb is commonly harvested from spring into early summer.

The exact timing depends on the variety and weather.

10. How to Harvest Rhubarb Without Damaging the Plant

Correct harvesting helps protect the crown and maintain future growth.

Step 1: Choose Mature Stalks

Select healthy, well-developed stalks from the outside of the plant.

Step 2: Hold Near the Base

Grip the stalk close to where it emerges from the crown.

Step 3: Pull and Twist Gently

Pull the stalk outward with a gentle twisting motion.

This usually releases it cleanly from the crown.

Step 4: Remove the Leaf

Cut the leaf blade away from the harvested stalk.

Step 5: Leave Plenty of Stalks

Never strip the plant completely.

Leave sufficient foliage to support photosynthesis and future growth.

Should You Cut Rhubarb Stalks?

Pulling and twisting is generally the preferred harvesting method.

Cutting may leave a stub that can decay.

However, avoid excessive force that could damage the crown.

11. When Should You Stop Harvesting Rhubarb?

For established outdoor rhubarb, harvesting is commonly stopped around late June or early July.

This gives the plant time to rebuild energy reserves for the following year.

Why Stop Harvesting?

Rhubarb needs its leaves to photosynthesise.

Removing too many stalks late in the season can weaken the plant.

Can You Harvest in August?

Although mature rhubarb may still produce stalks, routine late-season harvesting is generally discouraged if you want to maintain long-term vigour.

What About Weak Plants?

If the plant is struggling, stop harvesting earlier.

Allow it to recover.

Does Rhubarb Become Poisonous After June?

No.

The edible stalks don’t suddenly become poisonous on a particular date.

The main reason for limiting the harvest season is to protect the plant’s health.

However, rhubarb leaves are poisonous and must never be eaten.

12. Are Rhubarb Leaves Poisonous?

Yes.

Rhubarb leaves contain substances, including high concentrations of oxalates, that make them unsafe to eat.

Which Part of Rhubarb Is Edible?

The leaf stalks are the edible part of culinary rhubarb.

Which Part Should You Avoid?

Do not eat the leaf blades.

Keep discarded leaves away from children and pets that might chew them.

Can Rhubarb Leaves Be Composted?

Rhubarb leaves can generally be composted in a normal garden compost system.

Their natural compounds break down during decomposition.

However, they should not be used as food for people or animals.

What If Someone Eats Rhubarb Leaves?

Seek urgent medical or veterinary advice as appropriate.

Don’t wait for symptoms to develop after a potentially significant ingestion.

13. How to Force Rhubarb for an Earlier Harvest

Forcing rhubarb is a traditional technique used to produce early, tender stalks.

It involves excluding light from a suitable established crown.

What Is Forced Rhubarb?

Forced rhubarb grows in darkness or near-darkness.

The stalks are often paler, more tender and produced earlier than normal outdoor growth.

When to Force Rhubarb

Forcing is commonly started during winter after the plant has experienced sufficient cold to break dormancy.

How to Force Rhubarb Outdoors

Choose a healthy, established crown.

Place a suitable light-excluding forcing pot or container over it.

Ensure the covering is stable and safe.

Check growth periodically.

How Long Does It Take?

Growth rate depends on temperature and conditions.

Stalks may become ready over several weeks.

Should You Force the Same Plant Every Year?

No.

Forcing uses stored energy.

Allow the crown time to recover before forcing it again.

A common approach is to rest the plant for at least a couple of years between forcing attempts.

Can Young Rhubarb Be Forced?

Avoid forcing newly planted or weak crowns.

Choose vigorous, established plants.

14. How to Divide Rhubarb Crowns

Over time, rhubarb crowns can become large and congested.

Division allows you to rejuvenate plants and create additional crowns.

When Should You Divide Rhubarb?

Division is usually carried out during dormancy, commonly in late autumn or winter, when the soil is workable.

Signs Rhubarb May Need Dividing

The crown has become very large.

Growth is weaker than in previous years.

Stalk production has declined.

You want to create additional plants.

Step 1: Lift the Crown

Carefully dig around the plant.

Lift the crown with as much of the root system as practical.

Step 2: Identify Healthy Buds

Look for firm sections with healthy growing buds.

Step 3: Divide the Crown

Use a clean, sharp spade or suitable tool.

Each division should contain at least one strong bud and a reasonable portion of healthy roots.

Larger divisions often establish more reliably.

Step 4: Replant

Prepare the new planting positions.

Set the crowns at the correct depth.

Water appropriately.

Step 5: Allow Recovery

Treat divided rhubarb as newly established plants.

Avoid harvesting during the first growing season after division.

15. Can You Grow Rhubarb in Containers?

Yes, but rhubarb is a large, vigorous perennial with a substantial root system.

Container growing requires careful management.

Choose a Large Container

Use a sturdy pot with generous depth and width.

A container of at least approximately 50–60 cm across is a useful starting point for a single plant, although larger is often better.

Provide Drainage

Make sure excess water can escape.

Use Suitable Compost

Choose a good-quality, moisture-retentive growing medium.

Water Regularly

Container-grown rhubarb can dry out more quickly than plants growing in the ground.

Feed Appropriately

Nutrients may become depleted over time.

Follow suitable feeding guidance.

Protect the Container in Winter

Although rhubarb is hardy, roots in containers can be more exposed to severe cold.

Move pots into a sheltered position if necessary.

Is Container Rhubarb as Productive?

It may produce smaller harvests than a well-established plant growing in open ground.

Large containers and consistent care improve the chances of success.

16. Why Is My Rhubarb Not Growing Properly?

Rhubarb is generally reliable, but several problems can affect growth.

Poor Soil

Low fertility, compaction or unsuitable drainage can restrict growth.

Lack of Moisture

Prolonged drought may reduce stalk production.

Waterlogging

Persistently wet soil can damage roots and crowns.

Overharvesting

Removing too many stalks weakens the plant.

Young Plants

Newly planted rhubarb needs time to establish.

Overcrowded Crowns

Older plants may benefit from division.

Insufficient Light

Deep shade can reduce vigour.

Disease

Crown rot and other problems can cause serious decline.

Before applying fertiliser, identify the most likely cause.

17. Why Are My Rhubarb Stalks Thin?

Thin stalks can be frustrating, particularly when you expect large harvests.

Possible Causes

The plant is still young.

The crown is congested.

The soil lacks moisture.

Growing conditions are poor.

The plant has been harvested excessively.

The variety naturally produces narrower stalks.

How to Improve Stalk Growth

Maintain soil fertility.

Water during prolonged dry weather.

Mulch appropriately.

Avoid overharvesting.

Divide congested crowns when necessary.

Give the plant time to recover.

18. Why Is My Rhubarb Flowering?

Rhubarb occasionally produces tall flowering stems.

This is sometimes called bolting.

Why Does Rhubarb Flower?

Flowering can be influenced by variety, plant maturity and environmental stress.

Should You Remove the Flowers?

For plants being grown primarily for stalk production, removing flower stems is usually sensible.

This helps direct resources towards vegetative growth.

How to Remove Flower Stems

Cut them close to the base using clean secateurs.

Avoid damaging the crown.

Does Flowering Mean the Plant Is Dying?

No.

A flowering rhubarb plant isn’t necessarily unhealthy.

However, repeated flowering combined with weak growth may indicate stress or other problems.

19. Common Rhubarb Pests and Diseases

Although rhubarb is relatively robust, it can suffer from pests and diseases.

Slugs and Snails

Young shoots may be damaged during spring.

Encourage natural predators and use suitable controls where necessary.

Crown Rot

Crown rot can cause shoots to collapse and the crown to decay.

Poor drainage may contribute to the problem.

Remove badly affected plants and avoid replanting into unsuitable waterlogged conditions.

Leaf Spot Diseases

Some fungal diseases cause spots or discolouration on leaves.

Remove badly affected foliage where appropriate and maintain suitable growing conditions.

Aphids

Aphids may occasionally colonise young growth.

Monitor populations and encourage beneficial insects.

Rhubarb Beetles and Other Insects

Various insects may visit or feed on rhubarb.

Identify the species before deciding whether control is needed.

Not every insect requires treatment.

20. How to Look After Rhubarb in Autumn

Autumn is an important time for rhubarb care.

As temperatures fall, the leaves gradually die back.

The plant begins entering dormancy.

Stop Harvesting

Established plants should already have finished their main harvesting season.

Allow Leaves to Die Back Naturally

Healthy foliage continues contributing energy to the crown while it’s active.

Remove Collapsed Foliage

Once leaves have died back, remove decaying material if necessary.

Control Weeds

Keep the surrounding area reasonably free from competition.

Mulch Around the Crown

Apply suitable organic matter around the plant.

Avoid burying the crown.

Divide When Appropriate

Dormant, established crowns can be divided when conditions are suitable.

21. How to Look After Rhubarb in Winter

Rhubarb is hardy and generally tolerates normal UK winter temperatures.

However, excessive winter wet can be more problematic than cold alone.

Avoid Waterlogging

Ensure the planting area drains adequately.

Don’t Overwater

Dormant plants usually need little additional water outdoors.

Keep the Crown Clear

Avoid covering the growing points with thick layers of wet mulch.

Protect Container Plants

Move vulnerable pots into a sheltered position during prolonged severe weather.

Plan Spring Feeding

Assess soil condition and prepare suitable organic matter for spring.

22. UK Rhubarb Growing Calendar

Month	Rhubarb jobs
January	Check dormant crowns and consider forcing suitable established plants.
February	Plant dormant crowns if soil conditions allow; monitor forced rhubarb.
March	Watch for new growth, mulch and assess feeding needs.
April	Begin harvesting established plants when stalks are ready.
May	Continue harvesting mature plants and water during dry weather.
June	Finish the main harvest around late June or early July.
July	Allow foliage to rebuild plant reserves; water during drought.
August	Maintain soil moisture and remove weeds.
September	Allow healthy foliage to continue growing.
October	Prepare for dormancy and remove collapsed leaves when appropriate.
November	Plant or divide dormant crowns in suitable conditions.
December	Check drainage and protect container-grown plants if necessary.

Exact timing depends on your location, weather and rhubarb variety.

23. What Can You Make with Home-Grown Rhubarb?

One of the best things about growing rhubarb is enjoying the harvest in the kitchen.

Rhubarb Crumble

A traditional favourite.

Rhubarb works beautifully with a sweet crumble topping.

Stewed Rhubarb

Gently cook chopped rhubarb with a little water and sugar to taste.

Rhubarb Jam

Rhubarb can be used to make delicious homemade preserves.

Follow a tested preserving recipe.

Rhubarb and Custard

A classic combination.

Rhubarb Compote

Cook rhubarb gently and serve it with yoghurt, porridge or desserts.

Freezing Rhubarb

Rhubarb stalks can be washed, trimmed, chopped and frozen.

Use suitable freezer-safe packaging and label the date.

Remember to discard the leaves before preparing rhubarb for eating.

Frequently Asked Questions About Growing Rhubarb

What month should I plant rhubarb in the UK?

Dormant crowns are generally planted between November and March when the soil isn’t frozen or waterlogged.

Does rhubarb come back every year?

Yes. Rhubarb is a hardy perennial that produces new growth from its crown each spring.

Can I harvest rhubarb in its first year?

It’s best not to. Allow newly planted rhubarb to establish before harvesting.

What is the best fertiliser for rhubarb?

Mature compost and suitable well-rotted organic matter are useful for maintaining soil fertility. Additional fertiliser should be based on growing conditions and plant needs.

Does rhubarb prefer sun or shade?

Rhubarb generally grows best in full sun or light partial shade.

Why is my rhubarb producing small stalks?

Possible causes include young plants, overcrowded crowns, drought, poor soil or excessive harvesting.

Should I cut rhubarb stalks or pull them?

A gentle pull-and-twist motion is generally recommended for harvesting mature stalks.

When should I stop picking rhubarb?

The main harvest usually finishes around late June or early July to allow the plant to recover.

Can rhubarb grow in a pot?

Yes, but it needs a large container, good drainage, adequate moisture and suitable feeding.

How often should I divide rhubarb?

Divide when crowns become congested, less productive or when you want additional plants. It isn’t necessary to divide healthy productive plants on a fixed schedule.

Is green rhubarb safe to eat?

Yes. Edible stalk colour varies by variety. Green stalks aren’t automatically unripe or unsafe.

Are rhubarb leaves poisonous?

Yes. Only the stalks of culinary rhubarb should be eaten.

Final Thoughts: Enjoy Growing Rhubarb for Years to Come

Rhubarb is one of the most rewarding crops you can grow in a UK garden or allotment.

Once established, a healthy crown can provide delicious stalks every spring with relatively little maintenance.

The key to success is giving the plant a good start.

Choose a suitable position, prepare the soil carefully and avoid planting the crown too deeply.

Keep the soil reasonably moist during active growth, feed appropriately and protect the crown from prolonged waterlogging.

Most importantly, don’t rush harvesting young plants.

Allow rhubarb time to develop strong roots and build up energy reserves.

Once your plant is established, harvest carefully and leave plenty of foliage so it can continue growing strongly.

If your crown becomes overcrowded, divide it during dormancy and use the healthy sections to establish new plants.

With the right care, rhubarb can become a reliable part of your garden for many years.

And there’s nothing quite like harvesting your own fresh rhubarb and turning it into a homemade crumble.

Keep smiling, keep shining, keep gardening with Ben!