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Western sweetshrub

Calycanthus occidentalis

Also called California Spicebush, California Allspice, Spicebush, Sweetshrub, California Sweetshrub, Californian Allspice, Sweet Shrub

Western sweetshrub
Photo: Joseph C Boone, CC BY-SA 4.0

Western sweetshrub is a deciduous shrub native to moist canyons and stream banks in California's foothills, valued for its aromatic leaves and dark burgundy flowers. It does best in cool, moist soil with some shade.

Family
Calycanthaceae (Calycanth family)
Grows as
Shrub
Light
Part shade
Water
Keep soil evenly moist, especially in summer, and avoid letting it dry out completely.
Soil
Moist, well-drained loam rich in organic matter.
Temperature
Hardy to about -15 °C; protect young plants from heat and drying winds.
How easy
Easy
Native range
N. & C. California
Climate
temperate

About

Calycanthus occidentalis, commonly called spice bush or western sweetshrub, is a species of flowering shrub in the family Calycanthaceae that is native to California. It grows along streams and moist canyons in the foothills of mountains.

Where it grows

Calycanthus occidentalis is endemic to California, and found throughout much of the state from as far north as the Klamath Mountains and as far south as the San Joaquin Valley. Past collections in Washington have been found to have escaped cultivation, and are not naturally occurring. It grows along streams and on moist canyon slopes at elevations of 200–1,600 m (700–5,200 ft).

Other Calycanthus plants

Calycanthus chinensis · Eastern sweetshrub · Sweetshrub

Text excerpted from the Wikipedia article Calycanthus occidentalis 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.

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