Plant Wiki

The open plant encyclopedia

Know any plant.
Grow it well.

Snap a photo or search by any name to see how to care for it, where it comes from, whether it's safe, and a 3D model you can turn.

  • 13,000+plants with full pages
  • 365,000+plant species worldwide
  • 220+countries covered

Common in

See all

The plants people record most in your country, and ones that grow there wild.

What do you want to do?

Popular plants

Browse all plants

See them in 3D

All plants in 3D

Browse plants

Filter by what you want to do, shape, origin, country, care and safety.

Plant Wiki › Browse plants

Cotton Weed

Pseudognaphalium affine

Also called Jersey Cudweed

Cotton Weed
Photo: KENPEI, CC BY-SA 3.0

Cotton Weed is a small, woolly-leaved annual or biennial herb of the daisy family, widely found across East and Southeast Asia and parts of the Caucasus. It is a hardy, easy wild plant that is mainly grown or gathered for its use in food and traditional medicine.

Family
Asteraceae (Daisy family)
Grows as
Annual
Light
Full sun
Water
Water moderately while establishing, then let the soil dry out between waterings.
Soil
Well-drained, average or poor soil; tolerates sandy or disturbed ground.
Temperature
10–25 °C; tolerates cool temperate conditions but is damaged by hard frost.
How easy
Easy
Safety
Not known to be toxic
Native range
Caucasus to Temp. E. Asia and W. & C. Malesia
Climate
temperate

About

Pseudognaphalium affine is a species of flowering plant belonging to the genus Pseudognaphalium. The species is widely distributed in East Asia, Southeast Asia, South Asia, Transcaucasus and Anatolia.

The plant is biennial, with stems 15–40 cm long, the surface of the plant is covered with fine woolly hair and the leaves are small and rounded. The flowers appear as small florets with petal around 2 mm long.

Uses

This plant has been used traditionally in Traditional Chinese medicine and also features in the cuisine of East Asian Countries namely in sweet rice confections. They include the Japanese Kusa mochi and the Fujianese/Taiwanese chhú-khak-ké.

Text excerpted from the Wikipedia article Pseudognaphalium affine by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.

The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.

Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.

Credits & terms

Identify a plant

Point at a leaf or flower and snap. One plant in frame works best.

Your photo
Starting camera…