Red Leg
Polygonum persicariafam. Polygonaceae
Educational content — not medical, botanical, or professional advice. Always consult a qualified clinician before using any herbal preparation — especially during pregnancy, breastfeeding, while on medication, or for children. How we source & review →
Pl. E8C7 — Polygonum persicaria
Polygonum persicariaPolygonum persicariaPolygonum persicariaPolygonum persicariaPolygonum persicariaPolygonum persicariaPolygonum persicariaPolygonum persicariaPolygonum persicariaPolygonum persicariaPolygonum persicariaPolygonum persicariaPolygonum persicariaPolygonum persicaria
IOverview
Overview
Red Leg (Polygonum persicaria) is an annual forb or herb native to regions spanning from Europe and Asia to North Africa. Known for its edible and medicinal properties, this plant thrives in moist conditions with light to heavy soil, preferring a pH between 6.5 and 7. Its range includes countries such as Afghanistan, Albania, Algeria, and Austria. Red Leg can grow up to 0.6 meters tall and is distinguished by its light energy requirements and hardiness zones of 4-8. The plant's edible parts include leaves, shoots, and seeds, making it a versatile addition to gardens or landscapes where it can serve both ornamental and utilitarian purposes.
Quick answers
What is Red Leg?
Red Leg (Polygonum persicaria) is an annual forb or herb native to regions spanning from Europe and Asia to North Africa. Known for its edible and medicinal properties, this plant thrives in moist conditions with light to heavy soil, preferring a pH between 6.
What is Red Leg 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 Red Leg
Clinicaluses · safety · chemistry · dosagemedicinal profile
IIBenefits & evidence
1 claim · 0 sources
Benefits & evidence
1 claim · 0 sources- Traditional-use note: Red Leg appears in herbal sources around after-meal comfort traditions, often as a tea. PlantSage presents this as ethnobotanical context, not as medical advice.
Traditional context only. This reviewed claim keeps the original low confidence level, but avoids treatment, disease, dosage, or guaranteed-effect language.
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.
Red Leg support blend
generaltea
AI returned a direct ingredient list; normalized into one draft blend for editorial review.
Growingconditions · propagation · uses
VCultivation
Cultivation
Red Leg (Polygonum persicaria) thrives in moist, light to heavy soils with a pH of 6.5-7. It prefers partial shade but can tolerate full sun. This annual plant grows up to 0.6 meters tall and is hardy in zones 4-8. For best results, sow seeds directly into the garden soil after all danger of frost has passed. Keep the soil consistently moist, especially during dry spells. Harvest leaves, shoots, and seeds for culinary use.
Light
5/10
Water
Moist
Soil
Light (sandy), Medium, Heavy (clay)
Hardiness
4-8
Life cycle
Annual
Habit
Forb/herb
Mature size
0.6 m tall
Soil pH
6.5–7
For first-time growers
How to grow Red Leg for the first time
7steps
Red Leg is a forgiving plant for beginners, making it an excellent choice for your first gardening project.
- 1
What you'll need
Seeds or young plants, a container with drainage holes, potting soil.
- 2
Best time to plant
Plant in spring after the last frost, or start seeds indoors about 4 weeks before planting outdoors.
- 3
Soil and container prep
Use well-draining soil with a pH between 6.5 and 7. Ensure your container is at least 30 cm deep.
- 4
Sowing or transplanting
Direct sow seeds 1-2 cm deep, spacing them about 15 cm apart. Transplant young plants when they have several leaves.
- 5
First two weeks
Keep the soil consistently moist and provide partial shade to help seedlings establish.
- 6
Ongoing care
Water regularly, especially during dry spells, and mulch around the base for moisture retention. Fertilize lightly every 4-6 weeks.
- 7
Harvest or pruning
Pinch back shoots to encourage bushy growth and prevent leggy stems. Harvest leaves as needed throughout the growing season.
VIEdible & utility
Edible & utility
Edible parts:LeavesSeedShoots
Edible uses: Red Leg (Polygonum persicaria) is edible and its leaves, shoots, and seeds can be consumed. The leaves and shoots are often eaten fresh in salads or cooked as a vegetable. Seeds can also be harvested and used in various culinary applications.
Other uses:Dye
Contextrange · companions · related
VIIDistribution
30 native · 0 introduced
Distribution
30 native · 0 introducedDistribution across3 continents· 30 native
Europe10 regions
native (10)AlbaniaAustriaBelarusBelgiumBulgariaDenmarkFrancePortugalRussiaSpain
Asia5 regions
native (5)AfghanistanChinaIraqJapanSouth Korea
Africa3 regions
native (3)AlgeriaEgyptMorocco
Broader regions
native:Altay, Amur, Baltic States, Czechoslovakia, East Himalaya, Lebanon-Syria
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 (Polygonaceae), common use cases, and growing requirements.
same family · Polygonaceae
Botanical relatives — often share phytochemistry + growing needs.
XI
Explore further
Companion planting
Health goals
Compare with similar plants
Growing zone
XII
About this entry
- Last updated
- Citation
- How to cite this entry · Submit a correction
Back to the cataloguePlant id · e8c73ce3-af93-415e-80b6-fd6e998ebc50
Decision aid
Choosing between Red Leg and something else?
Continue reading
❦❦❦❦
Endpaper · archive updates
Get archive updates
Occasional email when substantial new content lands — plant profiles, seasonal growing notes, folk-remedy additions. Free, no tracking, unsubscribe anytime.