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Shrubs

Myrtle-leaf milkwort

Polygala Myrtifolia

An evergreen shrub native to South Africa, with pollinator attracting Purple & White flowers.

Quick Care Summary

Light Full sun to Partial Shade.
Water Moderate
Mature size 1.5m Wide - 2mTall
Frost Frost hardy
Difficulty Medium
Flowering Summer

How to Grow and Care

  • Soil Requirements: The plant requires well-draining, fertile soil. A mix of sand, perlite, and peat moss in equal parts is ideal, with a slightly acidic to neutral pH of 5.5–7.0
  • Watering: Water moderately, allowing the soil to dry slightly between waterings. Deep, infrequent watering encourages strong root growth, while overwatering can lead to root rot.
  • For propagation, cut healthy 4–6-inch stems, strip lower leaves, dip in rooting hormone, and plant in well-draining soil in a bright, warm spot.
  • Semi frost-sensitive, surviving in regions with down to -5°C, In colder climates, provide winter protection by covering the plant, moving it indoors, or placing it in an unheated greenhouse or conservatory
  • Polygala myrtifolia produces vibrant mauve, pink, crimson, or white flowers from spring to autumn, sometimes nearly year-round in mild climates.

Best Uses

  • Outdoor garden
  • Patio / container

Growth and Size

  • Height: 2m
  • Width: 1m-1.5m
  • Growth rate: Moderate
  • Foliage: Green

Climate Suitability

  • Soil condition: Good, aerated compost rich soil.
  • Temperature: Frost resilient once established.
  • Temperature: Warm & dry.
  • Watering: Regular in dry warm climates.
  • Wind: Tolerant

Maintenance Level

  • Moderate maintenance
  • Regular feeding recommended
  • Fertilization: Feed Polygala Myrtifolia with a balanced, slow-release fertilizer during the growing season, typically in spring and late summer. Water the plant before and after fertilizing to ensure proper absorption. Avoid over-fertilization, which can weaken the plant and reduce flowering.
  • Pruning: Regular pruning promotes bushier growth and abundant blooms. Remove dead, damaged, or diseased branches after flowering.
  • Pests and Diseases: Monitor for aphids, whiteflies, and powdery mildew.
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