| As many gardens around the country are bursting into life, unfortunately so are many weeds! Here are some organic solutions.
Tropical Zone
Some of the most invasive weeds in Australia's tropics are grasses that spread by seed, like Guinea Grass AKA Itch Grass or Green Panic (Panicum maximum syn Megathyrsus maximus); American Rats' Tail Grass (Sporobolus jacquemontii); Mission Grass (Pennisetum polystachyon); and Gamba Grass (Andropogon gayanus), which is classified as a Weed of National Significance. Cut them back before they start seeding as the first step toward control. Subtropical Zone
In the subtropics, vines are some of the most invasive species. They include Madeira vine (Anredera cordifolia), Blue Morning Glory (Ipomoea indica) and Moth Plant or Moth Vine (Araujia sericifera) are ones to eradicate early, before they start strangling your garden! Temperate Zone
Paterson's Curse or Salvation Jane (Echium plantagineum), Blue Heliotrope (Heliotropium amplexicaule) and Lantana (Lantana camara) are pretty but devastating and potentially deadly weeds in temperate areas. They are toxic to some herbivores. Arid Zone
Fountain Grass (Pennisetum setaceum), Mother of Millions (Bryophyllum delagoense) and Artichoke Thistle or Cardoon (Cynara cardunculus) are some of the most striking weeds in arid areas - which makes them easier to spot and destroy! On the West Coast, Sweet Pittosporum or Native Daphne (Pittosporum undulatum), although native to Australia's East Coast, has become very invasive, outcompeting WA species. Cool Zone
Many cool and damp areas of Australia have become choked with garden escapees, like Arum Lily (Zantedeschia aethiopica), Agapanthus (Agapanthus praecox ssp. orientalis) and Fennel (Foeniculum vulgare). Please take care when introducing potentially invasive plants into your garden, especially if you live near parks, the ocean, waterways or bushland. | 
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