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PlantSnap
Plant Care
Myrtle-leaf milkwort
(Polygala myrtifolia)
Also Known As
Myrtle-leaf milkwort, Blue pigeon flower, Myrtle milkwort
About This Plant
Polygala myrtifolia is a flowering evergreen shrub with small, glossy leaves and clusters of showy purple flowers. The plant is native to South Africa and is commonly grown as an ornamental plant in gardens and landscapes. It is a hardy and low-maintenance plant that can thrive in a variety of conditions.
Plant Care Instructions
Outdoor Size Range
3-6 feet (0.9-1.8 m)
Light Requirements
Polygala myrtifolia prefers full sun to partial shade. It can tolerate some shade but will not flower as abundantly.
Humidity Needs
Polygala myrtifolia does not require high humidity levels. It can tolerate dry air.
Fertilizing Schedule
Feed the plant with a balanced fertilizer once a month during the growing season. Do not fertilize in the winter months.
Pruning Guidelines
Prune the plant in the late winter or early spring to maintain its shape and promote new growth. Remove any dead or damaged branches.
Common Pests and Diseases
Polygala myrtifolia is relatively pest-free. However, it can be susceptible to spider mites, whiteflies, and scale insects. Treat infestations with insecticidal soap or neem oil.
Indoor Size Range
18-24 inches (45-60 cm)
Watering Schedule
Water the plant deeply once a week during the growing season. Allow the soil to dry out slightly between waterings. Reduce watering in the winter months.
Temperature Range
The plant can tolerate a wide range of temperatures from 20°F (-6°C) to 100°F (38°C). It can survive light frost but may suffer damage in severe frost.
Growing Season
The plant blooms from late winter to early summer.
Growing Difficulty Level
Polygala myrtifolia is an easy plant to grow and maintain. It is suitable for both novice and experienced gardeners.
USDA Hardiness Zones
Polygala myrtifolia can grow in USDA hardiness zones 9-11.
Did You Know?
Polygala myrtifolia is sometimes called the 'Sweet Pea Bush' because its flowers resemble those of sweet peas.
