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Sweet pea shrub

Botanical Name Polygala myrtifolia
Family Polygalaceae
Origin South Africa

Identification

Attractive much-branched shrub up to 2 m high. Leaves alternate, oval to 30 mm long. Flowers clustered in simple racemes at the ends of the branches. Flower pea-like and purple or veined purple, Jan-Dec.

Habitats

Coastal fringes, occasionally shrubland. West coast cliffs near Karekare and Piha. Cliffs of Kawau Island.

Impact to Biota and Ecosystems

Currently vigorously spreading along coastal cliff areas on west coast in Auckland. Displaces native coastal shrubs. Cliff communities are particularly at risk.

Dispersal Routes, Vectors, Infestation Sources

Garden escape. Spreads by seed.

Management

Management 

Physical Control

Pull out by hand if plant numbers are few. Large plants can be cleared with a brushcutter.

Disposal  
Chemical Control

(i) Spray with Tordon Gold or Tordon Brushkiller.

(ii) Glyphosate at 100 ml in 10 litres of water plus 20 ml of Penetrant.

Biological Control

Recommended Approach

Hand pull if possible.