Potentilla johnstonii Plant Care

Potentilla johnstonii (Potentilla johnstonii) belongs to the Rosaceae family within the Potentilla genus. Potentilla johnstonii is native to Nevada.

Potentilla johnstonii displays a low spreading shrub growth habit, reaching up to 1.5 ft tall with a spread of approximately 2 ft. Potentilla johnstonii produces small, bright yellow flowers in clusters.

Leaf size: approximately 2 inches.

Water a young or newly planted Potentilla johnstonii every 7–10 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.

Potentilla johnstonii thrives in full sun to partial shade.

Potentilla johnstonii tolerates temperatures of 50–75°F. Potentilla johnstonii prefers humidity levels of 40–60%.

Well-draining loamy soil with added compost for nutrients. Good drainage is essential for Potentilla johnstonii to prevent waterlogging, which leads to root rot and fungal issues.

Feed Potentilla johnstonii 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 full sun to partial shade and well-draining loamy soil with added compost for nutrients. Avoid low spots where water collects after rain.

Potentilla johnstonii 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.

Potentilla johnstonii can spread to about 2 ft (0.6 m) and reach about 2 ft (0 m) tall. Space plants about 2 ft (0.6 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 Potentilla johnstonii 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.

Potentilla johnstonii 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.

Potentilla johnstonii can be propagated through softwood cuttings, division. Similar propagation techniques also apply to golden cinquefoil plant care, which shares the same genus.

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

Potentilla johnstonii is susceptible to aphids, spider mites, leafhoppers. 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.

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