Tag Archives: how to grow organic gardening

Powdery mildew on zucchini

A reader has asked about powdery mildew on zucchini plants and fungus-eating ladybirds: Hi. Wonder if you can sort this. 1. Most fungi need moisture and organic material. This seems to be supported by my zucchinis which seem to get … Continue reading

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Powdery mildew

Temperatures between 11-28° C. and excess humidity (without rain) can provide suitable conditions for powdery mildew spores to become active, especially on plants have been affected by drought, or are under-fertilised. Powdery mildew spores are carried by air and, once … Continue reading

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Stink bugs

The flat-bodied bronze orange bugs in the photos below are also known as stinkbugs because of the vile odour of the secretion they release when disturbed. These bugs can do a lot of damage to citrus trees as they suck … Continue reading

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Wireworms

Jeanette is having trouble with wireworms in her potato patch and where she has grown yams. Wireworms are larvae of Click Beetles. The larvae are shiny, brownish cylindrical creatures with 6 legs close to the head. They can grow to … Continue reading

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Cabbage white butterfly

 These flirtatious little butterflies can be destructive to stressed Brassica plants. If your plants have been attacked, squash any green caterpillars or feed them to the chooks. They often hide along the mid ribs of leaves making them difficult to … Continue reading

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Bean Fly

Although bean crops in most areas are close to the end of their productive life (April-May), some gardeners in warm climates are having problems with bean fly. The best way to avoid bean fly is to have plenty of compost … Continue reading

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