Revegetation Strategy - Townsville State of the Environment Report

Townsville City Council Draft Revegetation Strategy
Species name
Common name
Current
weed References
Weed control techniques
status
Muntingia calabura strawberry tree l b Injection, basal bark or cut stump application of triclopyr/picloram or glyphosate probably
effective.
Neonotonia wightii glycine m e Hand removal (ensuring roots are also removed), herbicide susceptibility unknown.
Opuntia stricta prickly pear l, P3 p,n,b Introduced Cactoblastis moth and cochineal bug are very effective biological control agents,
limiting prickly pear to small isolated populations. Spot spray with roundup or triclopyr/picloram.
Panicum maximum guinea grass s c,s,b Hand removal is effective for small populations Larger infestations can be slashed or burnt,
followed by foliar spray with glyphosate or hand removal. Shading is the best long term solution.
Parkinsonia aculeata parkinsonia s, P2 p,n,c,b Mechanical removal followed by foliar spray of regrowth with triclopyr/picloram. Basal bark or
cut stump application of triclopyr/picloram. Beetles and a bug have been introduced, but their
impact is unknown as yet. Exclude stock when pods mature.
Parthenium hysterophorus parthenium weed m, P2 p,n,b CAUTION: This plant can cause severe dermatitis and hay fever. Pasture spelling and careful
management to avoid overgrazing limit entry and spread. Machinery, stock, feral animals and
people can all spread seed. Strict quarantine procedures, including washing down of equipment
used in infested areas, will limit spread. Foliar spray with glyphosate, picloram or 2,4-D.
Biological control, using 7 insects and a fungal rust, has so far had limited success.
Passiflora foetida stinking passionfruit s s,b,l Hand removal (ensuring roots are also removed), herbicide susceptibility unknown.
Passiflora suberosa corky passionfruit s s,b,l Hand removal (ensuring roots are also removed), herbicide susceptibility unknown.
Pistia stratiotes water lettuce l, P3 p,n Mechanical or hand removal. Two introduced weevils provide good control in many areas.
Glyphosate has been used successfully, but is undesirable in waterways.
Psidium guajava guava l e,b Cut stump application of triclopyr/picloram or glyphosate effective for large plants (> 3cm
diameter trunk), smaller plants can be basal barked with triclopyr/picloram.
Ricinus communis castor oil plant m p,n,c,b Mechanical or hand removal, foliar spray of small plants with glyphosate or 2,4-D, basal bark or
cut stump application of larger plants with triclopyr/picloram.
Salvinia molesta salvinia m, P3 p,n,c,b Biological control with an introduced weevil provides excellent control of large infestations.
Small populations can be removed mechanically or by hand.
Samanea saman rain tree l l Injection, basal bark or cut stump application of triclopyr/picloram probably effective.
Schinus terebinthifolia Brazilian pepper tree l s,b Hand removal of young plants. Injection, basal bark or cut stump application of
triclopyr/picloram on larger plants, coppices rapidly after fire.
Senna alata (Cassia alata) candle bush l n,c,e,b Hand removal effective if roots also removed. Slashing at flower stage prevents seed set. Foliar
spray or cut stump application with triclopyr/picloram or glyphosate probably effective.
Senna occidentalis coffee senna l n,c,b Hand removal, foliar spray with triclopyr/picloram, 2,4-D/picloram or glyphosate
Sida rhombifolia Paddy’s lucerne l n,c,b Mechanical or hand removal, foliar spray with glyphosate or fluroxypyr. Numerous insects have
been introduced, with some success.
Solanum seaforthianum Brazilian nightshade l b Hand removal, herbicide susceptibility unknown.
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