Greater Celandine Plant Care

Greater Celandine (Hylomecon vernalis) belongs to the Papaveraceae family within the Hylomecon genus. Greater Celandine is native to China, Korea and the Russian Far East. Greater Celandine is also known as Wood Poppy.

Greater Celandine displays a low rosette, spreading growth habit, reaching up to 0.5 ft tall with a spread of approximately 1 ft. Greater Celandine produces delicate yellow flowers with papery petals.

Leaf size: approximately 3 inches.

Water a young or newly planted Greater Celandine 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.

Greater Celandine thrives in partial to full shade. The optimal light range is 100–500 lux. Avoid placing Greater Celandine in direct, harsh sunlight for extended periods, as this can scorch the foliage.

Hylomecon vernalis tolerates temperatures of 50–75°F. Greater Celandine prefers humidity levels of 40–70%.

Well-draining, humus-rich soil with good moisture retention. Good drainage is essential for Greater Celandine to prevent waterlogging, which leads to root rot and fungal issues.

Feed Greater Celandine 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 to full shade and well-draining, humus-rich soil with good moisture retention. Avoid low spots where water collects after rain.

Greater Celandine 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.

Greater Celandine 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 Greater Celandine 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.

Greater Celandine 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.

Greater Celandine can be propagated through seeds, division of rhizomes. Similar propagation techniques also apply to japanese celandine poppy plant care, which shares the same genus.

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

Greater Celandine is susceptible to slugs, snails, aphids. 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.

Greater Celandine grows outdoors in USDA Zone 12a. It survives winters down to planting zone 12a. Greater Celandine is native to China, Korea and the Russian Far East. In cooler regions, grow Greater Celandine as a houseplant or bring it indoors before the first frost.