One-flowered columbine Plant Care

One-flowered columbine (Paraquilegia uniflora) belongs to the Ranunculaceae family within the Paraquilegia genus. One-flowered columbine is native to North America.

One-flowered columbine displays a low rosette, clumping growth habit, reaching up to 1.5 ft tall with a spread of approximately 1 ft. One-flowered columbine produces delicate spurred flowers in shades of blue, purple, or white.

Leaf size: approximately 4 inches.

Water a young or newly planted One-flowered columbine 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.

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

Paraquilegia uniflora tolerates temperatures of 50–75°F. One-flowered columbine prefers humidity levels of 40–60%.

Moist, well-draining soil rich in organic matter. Good drainage is essential for One-flowered columbine to prevent waterlogging, which leads to root rot and fungal issues.

Feed One-flowered columbine 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 moist, well-draining soil rich in organic matter. Avoid low spots where water collects after rain.

One-flowered columbine is suited to USDA Zone 4a – 7b.

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.

One-flowered columbine can spread to about 1 ft (0.3 m) and reach about 2 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 One-flowered columbine 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.

One-flowered columbine is hardy down to USDA zone 4a, so once established it can stay outdoors through winter in that zone and warmer ones.

Water deeply in late autumn before the ground freezes, and spread a 5–8 cm (2–3 in) layer of mulch over the root zone, keeping it away from the trunk.

Young and container-grown shrubs need extra protection: roots in a pot freeze much more easily than roots in the ground.

One-flowered columbine can be propagated through seeds, division of clumps. Similar propagation techniques also apply to small-leaf columbine plant care, which shares the same genus.

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

One-flowered columbine is susceptible to aphids, spider mites, slugs. 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.

One-flowered columbine grows outdoors in USDA Zone 4a – 7b. It survives winters down to planting zone 4a. One-flowered columbine is native to North America.