Bulbous Cyphia Plant Care

Bulbous Cyphia (Cyphia bulbosa) belongs to the Campanulaceae family within the Cyphia genus.

Bulbous Cyphia displays a low rosette, spreading ground cover growth habit, reaching up to 0.5 ft tall with a spread of approximately 1 ft. Bulbous Cyphia produces small bell-shaped flowers in shades of blue, purple, or white.

Leaf size: approximately 2 inches.

Water a young or newly planted Bulbous Cyphia every 5–7 days, soaking the whole root zone, until it is established — usually one to two growing seasons. Established shrubs mainly need water during long dry spells. In a container, water whenever the top few centimetres of soil are dry.

Bulbous Cyphia thrives in partial shade to full shade. The optimal light range is 50–200 lux. Avoid placing Bulbous Cyphia in direct, harsh sunlight for extended periods, as this can scorch the foliage.

Cyphia bulbosa tolerates temperatures of 50–75°F. Bulbous Cyphia prefers humidity levels of 40–70%.

Well-draining, slightly acidic soil with high organic matter content. Good drainage is essential for Bulbous Cyphia to prevent waterlogging, which leads to root rot and fungal issues.

Feed Bulbous Cyphia every 8 months during the growing season with a balanced, slow-release fertilizer at the rate on the label. Established shrubs 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 shade and well-draining, slightly acidic soil with high organic matter content. Avoid low spots where water collects after rain.

Bulbous Cyphia is suited to USDA Zone 12a.

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

Bulbous Cyphia can spread to about 1 ft (0.3 m) and reach about 1 ft (0 m) tall. Space plants about 1 ft (0.3 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 plant spacing calculator.

Prune Bulbous Cyphia 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 shrub in one year.

Bulbous Cyphia 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.

Bulbous Cyphia can be propagated through seeds, division of rhizomes. Similar propagation techniques also apply to digitata cyphia plant care, which shares the same genus.

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

Bulbous Cyphia is susceptible to aphids, slugs, snails. 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.

Bulbous Cyphia grows outdoors in USDA Zone 12a. It survives winters down to planting zone 12a. In cooler regions, grow Bulbous Cyphia as a houseplant or bring it indoors before the first frost.