Ceanothus roderickii Plant Care

Ceanothus roderickii (Ceanothus roderickii) belongs to the Rhamnaceae family within the Ceanothus genus. Ceanothus roderickii is native to western El Dorado County, California.

Ceanothus roderickii displays an upright, spreading shrub growth habit, reaching up to 10 ft tall with a spread of approximately 10 ft. Ceanothus roderickii produces clusters of small blue, white, or pink flowers.

Leaf size: approximately 2 inches.

Water a young or newly planted Ceanothus roderickii every 7–14 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.

Ceanothus roderickii thrives in full sun to partial shade.

Ceanothus roderickii tolerates temperatures of 50–90°F. Ceanothus roderickii prefers humidity levels of 40–70%.

Well-draining sandy loam with added compost for moisture retention. Good drainage is essential for Ceanothus roderickii to prevent waterlogging, which leads to root rot and fungal issues.

Feed Ceanothus roderickii every 8 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 full sun to partial shade and well-draining sandy loam with added compost for moisture retention. Avoid low spots where water collects after rain.

Ceanothus roderickii is suited to USDA Zone 12a.

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.

Ceanothus roderickii can spread to about 10 ft (3 m) and reach about 10 ft (3 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 Ceanothus roderickii 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.

Ceanothus roderickii is frost-tender (hardy to USDA zone 12). In colder areas grow it in a container and move it to a bright, frost-free place before the first frost.

Ceanothus roderickii can be propagated through softwood cuttings, semi-hardwood cuttings, layering. Similar propagation techniques also apply to blueblossom plant care, which shares the same genus.

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Ceanothus roderickii 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.

Ceanothus roderickii grows outdoors in USDA Zone 12a. It survives winters down to planting zone 12a. Ceanothus roderickii is native to western El Dorado County, California. In cooler regions, grow Ceanothus roderickii as a houseplant or bring it indoors before the first frost.