Growing Zucchini, also Courgette/Marrow, Summer squash

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19 Nov 08 Georgia (Australia - sub-tropical climate)
Paul, the white spots are powdery mildew. You can treat it without spraying chemicals by mixing full cream milk and water together so that there is 2 parts water and 3 parts milk. There are antibacterial properties in milk that will kill the mildew. But you need to do it once a week and the milk mix must dry on. If it rains you need to spray with the milk mix again. Also make sure that you don't wet the leaves when you water the plant...
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