Water Smartweed
Polygonum coccineum
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Pl. 2697 — Polygonum coccineum
Polygonum coccineumPolygonum coccineumPolygonum coccineumPolygonum coccineumPolygonum coccineumPolygonum coccineumPolygonum coccineumPolygonum coccineumPolygonum coccineumPolygonum coccineumPolygonum coccineumPolygonum coccineumPolygonum coccineumPolygonum coccineum
IOverview
Overview
Water Smartweed (Polygonum coccineum) is a perennial forb or herb that thrives in wet and waterlogged soils across a wide range of habitats from Afghanistan to Wyoming. Native to regions including Albania, Alberta, and Alaska, it has also naturalized in many other areas such as California, France, and parts of the United States like Alabama and Alaska. Known for its edible leaves, shoots, and seeds, this plant is valued for culinary uses. One distinctive feature is its light requirement; it prefers sandy, medium, or clay soils with a pH between 5.5 and 6.5, making it adaptable to various growing conditions while thriving in environments that are typically wetter than average.
Quick answers
What is Water Smartweed?
Water Smartweed (Polygonum coccineum) is a perennial forb or herb that thrives in wet and waterlogged soils across a wide range of habitats from Afghanistan to Wyoming.
What is Water Smartweed 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 Water Smartweed
Clinicaluses · safety · chemistry · dosagemedicinal profile
IIBenefits & evidence
1 claim · 0 sources
Benefits & evidence
1 claim · 0 sources- Traditional-use note: Water Smartweed 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.
Water Smartweed support blend
generaltea
AI returned a direct ingredient list; normalized into one draft blend for editorial review.
Growingconditions · propagation · uses
VCultivation
Cultivation
Water Smartweed thrives in wet conditions and prefers light (sandy), medium, or heavy (clay) soils with a pH of 5.5–6.5. It is hardy in temperate regions from USDA zones 4-8. This perennial grows to about 0.5 meters tall and requires full sun to partial shade. For best results, plant it where it can receive adequate moisture. Propagate by seed or division. Harvest edible parts such as leaves, shoots, and seeds.
Light
6/10
Water
Wet, Water
Soil
Light (sandy), Medium, Heavy (clay)
Hardiness
4-8
Life cycle
Perennial
Habit
Forb/herb
Mature size
0.5 m tall
Soil pH
5.5–6.5
For first-time growers
How to grow Water Smartweed for the first time
8steps
Water Smartweed 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, and potting soil.
- 2
Best time to plant
Plant in spring after the last frost or in early fall for best results.
- 3
Soil and container prep
Use well-draining soil with a pH between 5.5 and 6.5, ensuring your container has adequate drainage holes.
- 4
Sowing or transplanting
Direct sow seeds in the garden or start them indoors about 4-6 weeks before planting outside. Transplant young plants into larger containers if needed.
- 5
First two weeks
Keep soil consistently moist and provide partial shade to help establish your plant.
- 6
Ongoing care
Water regularly, especially during dry spells, and fertilize with a balanced fertilizer every 4-6 weeks. Prune back any leggy growth to encourage bushiness.
- 7
Harvest or pruning
Prune plants in late summer to promote new growth and prevent self-seeding. Leaves can be harvested throughout the growing season for use in salads.
- 8
Common mistakes
Overwatering, planting in heavy soil, and not providing enough shade are common pitfalls to avoid.
VIEdible & utility
Edible & utility
Edible parts:LeavesSeedShoots
Edible uses: Water Smartweed is edible and can be eaten raw or cooked. The leaves, shoots, and seeds are all usable parts of the plant. Typically, the young shoots and leaves are harvested and added to salads for a mild flavor. Seeds can also be collected and used in various culinary applications.
Contextrange · companions · related
VIIDistribution
30 native · 0 introduced
Distribution
30 native · 0 introducedDistribution across3 continents· 30 native
Europe9 regions
native (9)BulgariaDenmarkFinlandFranceGermanyGreeceHungaryIcelandUnited Kingdom
Asia1 region
native (1)China
Africa1 region
native (1)Ethiopia
Broader regions
native:Buryatiya, California, Cape Provinces, Chita, Colorado, Connecticut, Czechoslovakia, Delaware, District of Columbia, East Himalaya, Free State, Føroyar, Idaho, Illinois, Indiana
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
- Last updated
- Citation
- How to cite this entry · Submit a correction
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