Rhubarb
Rheum x cultorum
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Pl. 2716 — Rheum x cultorum
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IOverview
Overview
Rhubarb (Rheum x cultorum) is a perennial herb that thrives in full to partial sun and prefers moist, medium to heavy clay soil. Native to regions including Buryatiya, China North-Central, and Mongolia, this plant is valued for its edible stems, which can be used in various culinary applications. Rhubarb's distinctive red or green stems are often featured in jams, pies, and sauces. One of its notable features is the presence of oxalic acid, which gives it a tart flavor but requires careful preparation to avoid toxicity. Its hardiness ranges from zones 3-7, making it adaptable to various climates.
Quick answers
What is Rhubarb?
Rhubarb (Rheum x cultorum) is a perennial herb that thrives in full to partial sun and prefers moist, medium to heavy clay soil. Native to regions including Buryatiya, China North-Central, and Mongolia, this plant is valued for its edible stems, which can be used in various culinary applications.
What is Rhubarb used for?
Traditionally used for digestion. Each claim is evidence-rated — see Section II for full citations.
Best for
Top 1 evidence-ranked use of Rhubarb
Clinicaluses · safety · chemistry · dosagemedicinal profile
IIBenefits & evidence
1 claim · 0 sources
Benefits & evidence
1 claim · 0 sources- Rhubarb has been traditionally used in Chinese medicine for digestive issues, often prepared as a decoction to support bowel regularity and alleviate constipation.
The anthraquinone compounds emodin and rhein are thought to stimulate the colon's smooth muscle contractions, aiding in laxative effects. However, the exact mechanism is not fully characterised.
IV·bMixology suggestions
1 draft
Mixology suggestions
1 draftEditorial drafts. These pairings are AI-suggested from traditional herbal lore. Always verify with a qualified herbalist before brewing.
Rhubarb support blend
generaltea
AI returned a direct ingredient list; normalized into one draft blend for editorial review.
Growingconditions · propagation · uses
VCultivation
Cultivation
Rhubarb thrives in full sun to partial shade and prefers moist, medium to heavy clay soil. It is hardy in zones 3-7, making it suitable for temperate regions. Rhubarb is a perennial that grows up to 1.5 meters tall and can be propagated through division of the roots or by sowing seeds. Ensure the plant receives adequate water, especially during dry spells, as it requires moist conditions to flourish. SKIP
Light
Full sun, Partial sun/shade
Water
Moist
Soil
Medium, Heavy (clay)
Hardiness
3-7
Life cycle
Perennial
Habit
Forb/herb
Mature size
1.5 m tall
For first-time growers
How to grow Rhubarb for the first time
7steps
Start with a simple, full-sun spot in your garden for your first rhubarb plant.
- 1
What you'll need
A rhubarb crown or seedling, compost, and mulch.
- 2
Best time to plant
Plant in early spring before new growth starts or in late summer for fall harvest.
- 3
Soil and container prep
Choose a spot with rich, moist soil that is well-draining. Amend the soil with compost if needed.
- 4
Sowing or transplanting
Transplant rhubarb crowns in early spring, spacing them about 1 meter apart.
- 5
First two weeks
Water regularly to keep the soil moist and mulch around the plant to retain moisture.
- 6
Ongoing care
Fertilize with compost once a year. Keep the area weed-free and water consistently.
- 7
Harvest or pruning
Prune old leaves in spring, cut stems for harvest from late spring to early summer.
VIEdible & utility
Edible & utility
Edible parts:FlowersStem
Edible uses: Colouring, Rutin
Other uses:Pest control
Contextrange · companions · related
VIIDistribution
8 native · 22 introduced
Distribution
8 native · 22 introducedDistribution across1 continent· 8 native· 22 introduced
Asia3 regions
native (2)ChinaMongolia
introduced (1)South Korea
Broader regions
native:Chita, Irkutsk, Buryatiya
introduced:Indiana, Iowa, Labrador, Maine, Manitoba, Masachusettes, Michigan, Minnesota, New Brunswick, New Hampshire, New York, Newfoundland, North Carolina, Nova Scotia, Ohio, Ontario, Pennsylvania, Québec, Rhode I., Saskatchewan, Utah
IXSpecimen gallery
1 image
Specimen gallery
1 imageXSee also
8 related
See also
8 relatedPlants you might compare or use together — scored by shared family, common use cases, and growing requirements.
shared use cases
Different families, similar therapeutic role — good for comparing.
XI
Explore further
Companion planting
Health goals
Compare with similar plants
Growing zone
XII
About this entry
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