Ixanthus viscosus Plant Care

Ixanthus viscosus (Ixanthus viscosus) belongs to the Gentianaceae family within the Ixanthus genus. Ixanthus viscosus is native to Canary Islands laurel fields and displays small yellow flowers when in bloom.

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

Leaf size: approximately 3 inches.

Water a young or newly planted Ixanthus viscosus every 3–5 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.

Ixanthus viscosus thrives in partial shade to full shade. The optimal light range is 100–1,000 lux. Avoid placing Ixanthus viscosus in direct, harsh sunlight for extended periods, as this can scorch the foliage.

Ixanthus viscosus tolerates temperatures of 50–75°F. Ixanthus viscosus prefers humidity levels of 40–70%.

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

Feed Ixanthus viscosus every 6 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, acidic soil with high organic content. Avoid low spots where water collects after rain.

Ixanthus viscosus 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.

Ixanthus viscosus 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 Ixanthus viscosus 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.

Ixanthus viscosus 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.

Ixanthus viscosus can be propagated through seeds, division of rhizomes.

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

Ixanthus viscosus 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.

Ixanthus viscosus grows outdoors in USDA Zone 12a. It survives winters down to planting zone 12a. Ixanthus viscosus is native to Canary Islands laurel fields and displays small yellow flowers when in bloom. In cooler regions, grow Ixanthus viscosus as a houseplant or bring it indoors before the first frost.