Clermontia pyrularia Plant Care

Clermontia pyrularia (Clermontia pyrularia) belongs to the Campanulaceae family within the Clermontia genus. Clermontia pyrularia is native to the island of Hawaiʻi.

Clermontia pyrularia displays a tall, upright shrub growth habit, reaching up to 5 ft tall with a spread of approximately 3 ft. Clermontia pyrularia produces showy, tubular flowers in various colors.

Leaf size: approximately 6 inches.

Water a young or newly planted Clermontia pyrularia every 7–10 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.

Clermontia pyrularia thrives in filtered sunlight. Avoid placing Clermontia pyrularia in direct, harsh sunlight for extended periods, as this can scorch the foliage.

Clermontia pyrularia tolerates temperatures of 60–75°F. Clermontia pyrularia prefers humidity levels of 50–70%. A pebble tray or humidifier helps maintain adequate moisture around the plant.

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

Feed Clermontia pyrularia 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 filtered sunlight and rich, well-draining soil with high organic matter content. Avoid low spots where water collects after rain.

Clermontia pyrularia is suited to USDA Zone 13a.

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.

Clermontia pyrularia can spread to about 3 ft (0.9 m) and reach about 5 ft (2 m) tall. Space plants about 3 ft (0.9 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 Clermontia pyrularia 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.

Clermontia pyrularia is frost-tender (hardy to USDA zone 13). In colder areas grow it in a container and move it to a bright, frost-free place before the first frost.

Clermontia pyrularia can be propagated through seeds, stem cuttings. Similar propagation techniques also apply to kīhāpai plant care, which shares the same genus.

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

Clermontia pyrularia is susceptible to aphids, spider mites, scale insects. 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.

Clermontia pyrularia grows outdoors in USDA Zone 13a. It survives winters down to planting zone 13a. Clermontia pyrularia is native to the island of Hawaiʻi. In cooler regions, grow Clermontia pyrularia as a houseplant or bring it indoors before the first frost.