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

Jill of the rocks

Heuchera maxima

Also called Island Alumroot

Jill of the rocks
Photo: Stan Shebs, CC BY-SA 3.0

Jill of the rocks is a rhizomatous perennial native to the northern Channel Islands of California, growing on canyon cliffs. It is grown as a drought-tolerant native groundcover in part shade, especially under oaks.

Family
Saxifragaceae (Saxifrag family)
Grows as
Shrub
Light
Part shade
Water
Water sparingly once established; it tolerates dry conditions and dislikes soggy soil.
Soil
Well-drained, gritty or rocky soil, similar to its cliff habitat.
Temperature
Mild coastal climate suited; protect from hard frost.
How easy
Easy
Native range
SW. California (incl. N. Channel Is.)
Climate
temperate

About

Heuchera maxima is a species of flowering plant in the saxifrage family, known by the common names island alum root, Channel Islands coral bells, and Jill of the rocks.

It is endemic to the four northern Channel Islands of California, within Channel Islands National Park. It grows on canyon cliffs in coastal sage scrub habitats.

How to grow it

Heuchera maxima is also cultivated as an ornamental plant for traditional, drought tolerant, native plant, and wildlife gardens. It prefers part shade, including as a groundcover in dry shade conditions under oaks.

Other Heuchera plants

American alumroot · Urnflower alumroot · Shaggyhair alumroot · Crevice alumroot · Coralbells · Hairy alumroot · Alumroot

Text excerpted from the Wikipedia article Heuchera maxima 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…