Rhubarb is one of the most satisfying permanent crops for a British garden. Once a healthy crown is established, it can provide stalks every spring for years. The trade-off is space and patience: mature rhubarb becomes a substantial clump, and a new crown should not be stripped for pies during its first growing season.
Planting it correctly matters because the crown contains the buds that produce next year's stalks. Put those buds too deep in wet soil and rot becomes a risk. Give the plant a fertile position, enough room and time to establish.
Choose a healthy crown or potted plant
Dormant rhubarb crowns are usually sold during the cooler planting season. Look for firm substantial pieces with identifiable growth buds.
Avoid crowns that feel soft, rotten or heavily damaged. If you buy a potted plant during the growing season, inspect the foliage and root system as well.
Named varieties differ in stalk colour, flavour and cropping time. The RHS lists varieties including Victoria and Timperley Early; choose according to your plans and local availability.
Plan for a plant that gets big
The RHS notes that rhubarb may form a clump 1.5m across or more. It is not a compact salad crop suitable for a narrow gap between two paving slabs.
Allow space around each crown so leaves can spread without obscuring a path.
A plant that's cramped from the beginning may be difficult to divide or maintain later. Think in terms of several years, not one summer.
Pick a sunny fertile spot
Rhubarb grows well in fertile moisture-retentive soil with suitable drainage. A sunny position is often productive, although limited shade may be tolerated.
Avoid a low point that stays waterlogged in winter. Wet rot at the crown is a common reason a plant fails.
Clear perennial weeds before planting. Removing couch grass from the middle of a mature rhubarb clump is not an enjoyable job.
Prepare the soil deeply enough
Loosen the ground where the roots will spread and incorporate well-rotted organic matter where appropriate.
Fresh uncomposted manure against the crown isn't useful. Prepare fertile structured soil rather than making one deep soggy pocket.
If you have heavy clay, improve drainage and consider a slightly raised planting site. The crown should never sit in a basin of stagnant winter water.
Choose a suitable planting time
Dormant crowns are commonly planted from late autumn to early spring when soil is workable. The RHS recommends this period for bare-root plants.
Avoid planting in frozen or saturated ground simply because the calendar says November.
A potted plant bought later can be established at a suitable time with careful watering, following the supplier's guidance.
Set the crown at the right depth
Place the crown so the growing buds sit at or only just below the soil surface, according to RHS advice.
On particularly wet ground, keeping buds slightly proud can reduce the chance of rot. Don't bury a crown several inches deep under a heap of compost.
Spread the roots naturally, backfill carefully and firm soil around them without compacting the crown.
Water after planting
Give the plant enough water to settle soil around the roots. Then check conditions rather than keeping a dormant crown permanently soaked.
During the growing season, rhubarb appreciates steady moisture. Newly planted crowns have smaller root systems and need attention in dry spells.
Mulch around the plant to retain moisture, but keep the crown itself clear.
Don't harvest in the first year
This is the difficult part for impatient gardeners. The RHS recommends leaving a new crown unharvested in year one so leaves can feed the developing root system.
Take only a modest harvest in the second year if growth is strong. Normal harvesting is best left until the plant is well established.
Removing many stalks immediately may weaken the crown and reduce future harvests.
Recognise healthy spring growth
New shoots often emerge as tightly folded red or green buds before broad leaves expand.
Cold weather can slow them. Don't dig around the crown to check whether it is alive after every frost.
Watch for persistent rotten smells or soft collapsed growth, which can indicate a more serious problem than delayed spring emergence.
Feed and mulch intelligently
A mulch of well-rotted compost in spring helps soil retain moisture and adds organic matter as it breaks down.
Apply it around the plant, not over the emerging buds. A thick mound directly on the crown can encourage rot.
If growth is weak, consider soil fertility, weeds and available moisture before reaching for extra fertiliser.
Harvest stalks correctly
Mature stalks are usually pulled with a careful downward twist rather than cut close to the crown, following RHS guidance.
Take a limited proportion at a time and leave enough healthy leaves for the plant to keep growing. The RHS advises harvesting up to about one-third of stalks at a time once established.
Remove the leaves promptly. Only the leaf stalks are used as food; rhubarb leaves contain compounds that make them unsuitable to eat.
Protect children and pets from leaves
Rhubarb leaves are toxic if eaten. Keep trimmed leaves away from anyone likely to mistake them for edible greens.
The stalks can be cooked for crumbles and preserves, but the leaf blades are not a vegetable.
Wash harvested stalks and prepare them using a suitable recipe. Don't simply blend the whole leaf into a smoothie.
When to divide a large clump
After several years, an established crown may become crowded or less productive. Division can help rejuvenate it.
The RHS describes lifting and dividing crowns during dormancy, keeping a viable bud and root section on each piece.
Use a strong sharp spade safely and replant divisions at the correct depth. Do not leave cut crowns exposed for long periods in drying wind.
What about forcing rhubarb?
Forcing involves covering a mature plant to exclude light and encourage early pale shoots. It's a separate technique from ordinary planting.
It uses the crown's stored reserves and can weaken the plant. Don't force a newly planted crown.
If you're interested, let the original plant establish for several seasons before trying it.
Common reasons for poor growth
Deep planting, wet winter soil, competition from perennial weeds and harvesting too aggressively can all cause disappointment.
Very dry summers may also reduce stalk production. A regular mulch and sensible irrigation can help.
A healthy perennial sometimes looks dormant for much of winter. Judge its performance across a whole season.
The planting method worth keeping
Prepare fertile well-drained soil, give the plant enough space and set the crown with buds just at the surface.
Water as needed, keep mulch clear of the crown and leave that tempting first-year crop alone. Patience in the beginning is what makes rhubarb such a reliable long-term plant.