Polygonum tinctorium
Polygonum tinctoriumfam. Polygonaceae
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Pl. D706 — Polygonum tinctorium
Polygonum tinctoriumPolygonum tinctoriumPolygonum tinctoriumPolygonum tinctoriumPolygonum tinctoriumPolygonum tinctoriumPolygonum tinctoriumPolygonum tinctoriumPolygonum tinctoriumPolygonum tinctoriumPolygonum tinctoriumPolygonum tinctoriumPolygonum tinctoriumPolygonum tinctorium
IOverview
Overview
Polygonum tinctorium, commonly known as logwood or dye plant, is an annual herb native to the south-central and southeast regions of China and Vietnam. It thrives in moist conditions and prefers light (sandy), medium, and heavy (clay) soils. This plant grows up to 0.8 meters tall and requires full sun for optimal growth. Known for its edible leaves and seeds, logwood is valued both as a food source and for its vibrant dye, which has been used historically in textile coloring. Its distinctive feature includes the bright red or purple dye it produces from the heartwood, making it an important plant in traditional dyeing practices.
Quick answers
What is Polygonum tinctorium?
Polygonum tinctorium, commonly known as logwood or dye plant, is an annual herb native to the south-central and southeast regions of China and Vietnam. It thrives in moist conditions and prefers light (sandy), medium, and heavy (clay) soils.
What is Polygonum tinctorium used for?
Traditionally used for immune support, digestion. Each claim is evidence-rated — see Section II for full citations.
Best for
Top 2 evidence-ranked uses of Polygonum tinctorium
Clinicaluses · safety · chemistry · dosagemedicinal profile
IIBenefits & evidence
2 claims · 0 sources
Benefits & evidence
2 claims · 0 sources- Polygonum tinctorium has been traditionally used in Chinese medicine to support immune health, often prepared as a decoction. Its use is based on the belief that it can help maintain overall well-being during seasonal changes.
The mechanism by which Polygonum tinctorium supports immune function is not fully characterised but may involve bioactive compounds such as flavonoids and anthraquinones, which have been studied in related species for their immunomodulatory effects.
- Polygonum tinctorium is traditionally used in Chinese herbal medicine to aid digestion, often consumed as a tea or decoction. It may help alleviate digestive discomfort and support gastrointestinal health.
The mechanism of action for Polygonum tinctorium's digestive benefits is not fully characterised but may involve compounds such as tannins and flavonoids that have been studied in related species for their anti-inflammatory and antioxidant properties.
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.
Polygonum tinctorium support blend
generaltea
AI returned a direct ingredient list; normalized into one draft blend for editorial review.
Growingconditions · propagation · uses
VCultivation
Cultivation
Polygonum tinctorium thrives in full sun and prefers moist soil that can be light (sandy), medium, or heavy (clay). This annual plant grows to about 0.8 meters tall and is native to China South-Central, Southeast, and Vietnam. It is hardy in temperate regions. For propagation, sow seeds directly in the garden after all danger of frost has passed. Ensure the soil remains consistently moist for best growth.
Light
Full sun
Water
Moist
Soil
Light (sandy), Medium, Heavy (clay)
Life cycle
Annual
Mature size
0.8 m tall
For first-time growers
How to grow Polygonum tinctorium for the first time
8steps
Skip is a straightforward annual plant for beginners to grow, focusing on basic care and harvesting.
- 1
What you'll need
Seeds or seedlings, a container or garden bed, potting soil if using containers.
- 2
Best time to plant
Plant Skip in spring after the last frost, when temperatures are mild.
- 3
Soil and container prep
Use well-draining soil with a mix of light (sandy), medium, or heavy clay. Ensure containers have drainage holes.
- 4
Sowing or transplanting
Direct sow seeds 0.5 inches deep in the garden bed or start seedlings indoors and transplant them later.
- 5
First two weeks
Water regularly to keep soil moist, especially during dry spells. Monitor for pests and diseases.
- 6
Ongoing care
Provide full sun exposure and water when the top inch of soil feels dry. Fertilize lightly every few weeks.
- 7
Harvest or pruning
Prune regularly to encourage bushy growth, removing any yellowing leaves. Harvest young leaves for use in cooking.
- 8
Common mistakes
Overwatering, planting too deep, neglecting regular pruning and harvesting.
VIEdible & utility
Edible & utility
Edible parts:LeavesSeed
Edible uses: The Polygonum tinctorium plant is edible and its leaves and seeds can be consumed. The leaves are often eaten raw in salads or cooked as a vegetable. Seeds can also be used fresh or dried for various culinary applications.
Other uses:Dye
Contextrange · companions · related
VIIDistribution
3 native · 13 introduced
Distribution
3 native · 13 introducedDistribution across2 continents· 3 native· 13 introduced
Europe2 regions
introduced (2)RussiaUkraine
Asia5 regions
native (2)ChinaVietnam
introduced (3)ChinaJapanSouth Korea
Broader regions
introduced:Nansei-shoto, Primorye, Sakhalin, Transcaucasus, Hainan, Kuril Is.
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
XII
About this entry
- Last updated
- Citation
- How to cite this entry · Submit a correction
Back to the cataloguePlant id · d7066459-14bf-4ad1-80bb-70f27aa20f22
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