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

Alstonia

Alstonia
Photo: Unknown author, CC BY-SA 3.0

Alstonia is a genus of about 40 to 60 evergreen trees and shrubs in the dogbane family, native to tropical and subtropical regions of Africa, Central America, Southeast Asia, Polynesia and Australia. Most species are trees that can grow very large, and the genus is best known in gardens through Alstonia scholaris, the devil tree or dita bark tree.

Family
Apocynaceae (Dogbane family)
Grows as
Tree
Light
Full sun, Part shade
Water
Water regularly while young and let the top of the soil dry slightly between waterings.
Soil
Well-drained, fertile soil or a rich loamy mix.
Temperature
18–35 °C; protect below 10 °C
How easy
Moderate
Safety
Toxic

About

Alstonia is a widespread genus of evergreen trees and shrubs, of the family Apocynaceae. It was named by Robert Brown in 1811, after Charles Alston (1685–1760), professor of botany at Edinburgh from 1716 to 1760.

The type species Alstonia scholaris (L.) R.Br. was originally named Echites scholaris by Linnaeus in 1767.

Other Alstonia plants

Alstonia angustifolia · Alstonia angustiloba · Alstonia · Alstonia constricta · Deviltree · Alstonia pneumatophora · Indian devil tree · Hard Milkwood

Text excerpted from the Wikipedia article Alstonia 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.

Credits & terms

Identify a plant

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

Your photo
Starting camera…