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ShrubsConservatory Greenhouse

Polygala myrtifolia

myrtle-leaved milkwort

A tender, erect, bushy evergreen shrub with a bushy habit and mid-green leaves. Purple, greenish-white flowers with pink veins are produced from spring through to autumn

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Size
Ultimate height
1.5–2.5 metres
Time to ultimate height
5–10 years
Ultimate spread
1.5–2.5 metres
Growing conditions
Chalk
Loam
Sand
Moisture
Moist but well–drained, Well–drained
pH
Acid, Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Green White Purple Green
Summer Green White Purple Green
Autumn Green White Purple Green
Winter Green
Position
  • Full sun
  • Partial shade
Aspect

East–facing or South–facing or West–facing

Exposure
Sheltered
Hardiness
H2
Botanical details
Family
Polygalaceae
Native to GB / Ireland
No
Foliage
Evergreen
Habit
Bushy, Spreading branched
Genus

Polygala can be annuals, evergreen perennials or shrubs, with simple leaves and racemes of somewhat pea-shaped flowers

Name status

Correct

Plant range
South Africa, Lesotho

How to grow

Cultivation

Under glass grow in peat-free potting compost in full light with shade from hot sun. Water freely through summer months. Outdoors grow in moderately fertile, humus-rich, sharply drained soil in full sun or partial shade

Propagation

Take softwood cuttings in early summer or semi-ripe cuttings in mid-late summer

Suggested planting locations and garden types
  • City and courtyard gardens
  • Conservatory and greenhouse
  • Flower borders and beds
  • Wall side borders
Pruning

Pruning group 9. Prune winter damaged shoots in spring

Pests

May be susceptible to aphids and whitefly if growing under glass

Diseases

High Risk Host for Xylella fastidiosa

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