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Blue Psoralea, Blue Pea Bush

Blue Psoralea, Blue Pea Bush
Photo: Robert Chin
Invasive Plant
Blue Psoralea, Blue Pea Bush
Psoralea pinnata
 

This is an erect, evergreen shrub or small tree from South Africa to 4 m high. Pea-shaped flowers are blue, lilac and white and appear from October to December. Each flower develops a small pod that contains a single dark brown seed. The 'P' in Psoralea is silent and the name is pronounced as if it begins with the 's'. It grows along streams and in wet places.

 

HOW IT SPREADS

  • This species is extremely hardy and produces prolific amounts of seed that aid in its naturalisation. Mass germination occurs after fire. It shares many of the invasive characteristics of broom.
 
 
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Alternative Plants

Ceonothus, Blue Pacific
Photo: Macbird Floraprint
Alternative Plant Ceonothus, Blue Pacific
Ceanothus papillosus 'Blue Pacific'
Trees and Shrubs
 

This attractive evergreen shrub has masses of rich deep blue flowers in dense clusters during spring. It is a hardy and rapid growing shrub to 3 m high by 2 m wide. Thrives in full-sun and well-drained soils.

Hopbush, Varnish Leaf Hopbush
Photo: Macbird Floraprint
Alternative Plant Hopbush, Varnish Leaf Hopbush
Dodonaea viscosa ssp. viscosa
Trees and Shrubs
 

Commonly called 'Hopbush' because of the colourful fruits resembling the fruits used in brewing. It is a hardy, fastgrowing, evergreen tree up to 3 m high. Small, yellow-green flowers appear from spring through to autumn. Flowers are followed by green winged fruit capsules in summer. They require a light, well-drained soil in a sunny position. A purple foliaged form is also available. Most will tolerate moderate frosts and withstand extended dry conditions.

Native Rosemary
Photo: Macbird Floraprint
Alternative Plant Native Rosemary
Westringia fruticosa x eremicola 'Wynyabbie Gem'
Trees and Shrubs
 

This bushy Australian native shrub has masses of small, mauve flowers along the stems for most of the year. It grows to 2 m high by 2 m wide. It prefers full-sun for best flowering and tolerates most soils. It can be used as a low hedge and is suitable for growing in containers. Responds well to regular pruning to maintain compact shape. Frost, salt and drought tolerant.

 
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