Spotted lady's thumb
Persicaria maculosa Gray
- light
- —
- water
- —
- tall
- 99 cm
- wide
- —
Polygonaceae
Also called Redshank, Lady's Thumb, Ladysthumb smartweed, Ladysthumb, Willow weed
Formerly Persicaria mitis, Peutalis persicaria, Polygonum persicaria
When it flowers
Not known yet in the tropics: too few flowering observations to read a season from.
Read from iNaturalist photographs of it in flower. A month counts at 50% of the best month's flowering share (smoothed over three months) and 10% of its flowering count, from at least 100 flowering observations in the band.
If a child, a pet or anyone may have eaten a plant, contact a doctor or vet straight away, or call the National Poisons Information Centre (AIIMS, New Delhi) on 1800 116 117, free and open 24 hours.
Something wrong with it?About it
- Grows as
- AnnualKew's checklist, not yet checked
- Climate
- TemperateKew's checklist, not yet checked
- Wild in
- Temp. Eurasia to Indo-China, Macaronesia to N. AfricaKew's checklist, not yet checked
- Height
- 99 cmRead from Wikipedia, one source
- Flowers
- PinkRead from Wikipedia, one source
Not known yet: light, spread, water, coldest it survives, heat, hottest it survives.
In other languages (12)
- Russian
- Горец почечуйный, Горец пятнистый
- French
- Renouée persicaire, Renouée persicaire, renouée persicaire
- Dutch
- Perzikkruid, perzikkruid
- German
- Floh-Knöterich, Pfirsichblättriger Knöterich
- root
- PERMAC, blettut bløðkuurt, Glúineach dhearg
- Portuguese
- Polegar-de-moça, Pimenta-do-brejo
- Czech
- rdesno červivec
- Japanese
- ヨウシュハルタデ
- Chinese
- 春蓼
- Norwegian Bokmål
- hønsegras
- Swedish
- åkerpilört
- Danish
- Fersken-Pileurt
Where this comes from
- iNaturalist, read 2026-10-25, CC0-1.0 (observation counts)
- Wikidata, read 2026-10-25, CC0-1.0
- Kew's checklist, read 2026-10-24, CC-BY-4.0
- Wikipedia, read 2026-10-25, fact, cited
- Wikimedia Commons, read 2026-10-25, CC BY-SA 3.0
- iNaturalist, read 2026-10-25, CC0
- iNaturalist, read 2026-10-25, CC BY
- iNaturalist, read 2026-10-25, CC BY
- 3D model: Persicaria maculosa (built for Vanagrha) by Vanagrha, own
A fact “checked by a majority of its sources” was settled by a vote of the pages it was read from, not by a person reading it; one marked “one source” rests on that page alone. Anything else not marked checked has not been checked yet. Where nothing is known, the page says so rather than guess.