Western Spicebush Plant Care

Western Spicebush (Calycanthus occidentalis) belongs to the Calycanthaceae family within the Calycanthus genus. Western Spicebush is native to California. Western Spicebush is also known as California Allspice.

Western Spicebush displays an upright, spreading shrub growth habit, reaching up to 8 ft tall with a spread of approximately 10 ft. Western Spicebush produces fragrant, spiky red or burgundy flowers.

Leaf size: approximately 6 inches.

Water a young or newly planted Western Spicebush every 4–7 days, soaking the whole root zone, until it is established — usually one to two growing seasons. Established trees mainly need water during long dry spells. In a container, water whenever the top few centimetres of soil are dry.

Western Spicebush thrives in partial shade to full sun.

Calycanthus occidentalis tolerates temperatures of 20–90°F. Western Spicebush prefers humidity levels of 40–70%.

Rich, moist, well-draining soil with high organic content. Good drainage is essential for Western Spicebush to prevent waterlogging, which leads to root rot and fungal issues.

Feed Western Spicebush every 6 months during the growing season with a balanced, slow-release fertilizer at the rate on the label. Established trees in good soil often need little extra feeding, so let weak growth or pale foliage guide you.

Stop feeding by late summer so new growth can harden before winter.

The PlantoScan app can remind you when to water and when to fertilize each plant.

Choose a spot with partial shade to full sun and rich, moist, well-draining soil with high organic content. Avoid low spots where water collects after rain.

Western Spicebush is suited to USDA Zone 9a.

Plant container-grown or balled-and-burlapped trees in spring or early autumn, setting the root flare at soil level, and water well after planting.

Western Spicebush can spread to about 10 ft (3 m) and reach about 8 ft (2 m) tall. Space plants about 10 ft (3 m) apart so mature crowns don't crowd each other, and plant at least half that distance from buildings, fences and paths.

Planning a row or hedge? Try the tree spacing calculator.

Prune Western Spicebush while it is dormant in late winter: first remove dead, damaged and crossing branches, then thin lightly for shape.

If it flowers in spring, prune right after flowering instead so you don't remove next year's buds. Never take off more than about a quarter of the tree in one year.

Western Spicebush is frost-tender (hardy to USDA zone 9). In colder areas grow it in a container and move it to a bright, frost-free place before the first frost.

Western Spicebush can be propagated through softwood cuttings, seeds. Similar propagation techniques also apply to carolina allspice plant care, which shares the same genus.

See all plants toxic to cats and plants toxic to dogs.

Western Spicebush is susceptible to aphids, scale insects, spider mites. Inspect the foliage regularly, especially along leaf undersides and stems. Treat infestations promptly with insecticidal soap or neem oil to prevent spread.

Yellow leaves, brown tips or drooping? See common plant problems and how to fix them.

Western Spicebush grows outdoors in USDA Zone 9a. It survives winters down to planting zone 9a. Western Spicebush is native to California. In cooler regions, grow Western Spicebush as a houseplant or bring it indoors before the first frost.