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

Threeleaf arrowhead

Sagittaria trifolia

Also called Chinese Arrowhead, Three Leaf Arrowhead, Swamp Potato, Swan Potato

Threeleaf arrowhead
Photo: 阿橋 HQ, CC BY-SA 2.0

Sagittaria trifolia is a wetland aquatic or emergent perennial in the Alismataceae family, grown for its starchy underground tubers in parts of Asia. It needs wet or flooded conditions to thrive.

Family
Alismataceae (Alismat family)
Grows as
Aquatic
Light
Full sun
Water
Keep the roots constantly submerged in shallow water or saturated mud.
Soil
Heavy, fertile wet mud or clay loam at the bottom of a pond or container.
Temperature
Hardy to cold winters when roots are below ice; grows best in warm summers around 20-30 °C.
How easy
Easy
Safety
Not known to be toxic
Edible
Yes, some parts
Native range
S. European Russia to Japan and Malesia
Climate
temperate

About

Sagittaria trifolia, the threeleaf arrowhead or Chinese arrowhead, is a plant species widespread across the wet areas in Europe and in much of Asia.

Where it grows

S. trifolia is native to Ukraine, European Russia, Siberia, the Russian Far East, Central Asia, China, India, Iran, Iraq, Japan, Korea, Pakistan, Indonesia, the Philippines, and many smaller countries in between. It is also naturalized in the Fiji, Cook, and Society Islands in the Pacific.

Uses

It has underground tubers and is cultivated as a food crop in parts of Asia. The tubers are high in starch and highly nutritious. One of these cultivars is used as kuwai in Japan.

Other Sagittaria plants

Kansas arrowhead · Longbeak arrowhead · Shortbeak arrowhead · Crested arrowhead · Arumleaf arrowhead · Chihuahuan arrowhead · Engelmann's arrowhead · Bunched arrowhead · Threadleaf arrowhead · Grassy arrowhead · Quillwort arrowhead · Springtape

Text excerpted from the Wikipedia article Sagittaria trifolia 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…