About a week after laying down straw the winter squash and volunteer crooked necks developed this hideous case of powdery mildew. It has spread across the entire 15x8ft patch. The soaker hose runs under the plants and straw. I suspect this, combined with the sheer mass of leaves from the volunteers that blocks the light, has created the perfect moist condition for the nasty mildew. We of course went straight to the garden store to pick up an organic solution. However it turns out even organic products have precautionary labels. In this case, don't let it drain into stormwater runoff, don't inhale, wear long sleeves, 72 hours before harvest... So, we'll be searching the books for a more user friendly solution. If you have any wisdom on the subject feel free to let me know.
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