A lot of the courgette or zucchini plants that we grow end up getting infected with powdery mildew later in the season, but I generally have not bothered to do much about this in the past. But this season I decided to try spraying the infected leaves with diluted milk, and this seemed to work quite well to control this fungal infection.
0:00 Problems in the Gardens
1:23 Haven’t Paid Enough Attention to Courgettes
2:38 Powdery Mildew
4:28 Milk as a Fungicide
6:38 Milk Seems to Work
8:47 But Not All Plants Are Affected
10:34 Peas and Squash
11:57 Milk May be Good, Healthy Plants Are Better
13:55 Epilogue
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Part of the Cloughjordan Ecovillage, Tipperary, Ireland http://www.thevillage.ie