Shamrock Pea Plant Care

Shamrock Pea (Parochetus communis) belongs to the Fabaceae family within the Parochetus genus. Shamrock Pea is native to the mountains of Asia and tropical Africa, and has been introduced to New Zealand. Shamrock Pea is also known as African Sweet Pea, Blue Oxalis.

Shamrock Pea displays a low spreading ground cover growth habit, reaching up to 0.5 ft tall with a spread of approximately 1.5 ft. Shamrock Pea produces small blue pea-like flowers.

Leaf size: approximately 2 inches.

Water a young or newly planted Shamrock Pea 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.

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

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

Well-draining loamy soil mix with added organic matter. Good drainage is essential for Shamrock Pea to prevent waterlogging, which leads to root rot and fungal issues.

Feed Shamrock Pea 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 loamy soil mix with added organic matter. Avoid low spots where water collects after rain.

Shamrock Pea is suited to USDA Zone 13a.

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.

Shamrock Pea can spread to about 2 ft (0.5 m) and reach about 1 ft (0 m) tall. Space plants about 2 ft (0.5 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 Shamrock Pea 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.

Shamrock Pea 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.

Shamrock Pea can be propagated through seeds, division of clumps. Similar propagation techniques also apply to african clover plant care, which shares the same genus.

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

Shamrock Pea is susceptible to aphids, leafhoppers, whiteflies. 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.

Shamrock Pea grows outdoors in USDA Zone 13a. It survives winters down to planting zone 13a. Shamrock Pea is native to the mountains of Asia and tropical Africa, and has been introduced to New Zealand. In cooler regions, grow Shamrock Pea as a houseplant or bring it indoors before the first frost.