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Last week I was telling some friends about the horrible visitation of diseases in my vegetable garden; they suggested I write a blog post on it to show another side of gardening. I focus here on the pleasures of the garden, visual and culinary; I don't want to write about every disappointment and failure. But failures are many: seeds that don't germinate, plants that don't thrive, damage by insects and woodchucks. This summer's warmth resulted in the largest and most vigorous winter squash and zucchini plants I'd ever grown. But it may be that the warmth, with a lot of rain, encouraged the active growth of mildew. You can see its powdery appearance on the pumpkin vine above, and zucchini leaf below. I took the photos a week ago, and now the pumpkin plant is completely dead, as are the other winter squashes, with ripening fruits without the sustenance coming from the plant. They are almost ripe, so may be edible, but won't be as sweet as they should be.
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The zucchini plant, being incredibly tough, is still growing leaves and zucchini, and likely will until frost.
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The nightshade family––tomatoes, potatoes, eggplant, though not peppers––are susceptible to blight, which spots and yellows the leaves of the plant from the bottom up, eventually killing them all. All my potato plants died back early, so will likely have smaller potatoes; the tomatoes are badly damaged, especially the determinate paste tomatoes. This leads to a smaller harvest.
Next year I will be prepared: in addition to clearing off this years crop residue, I will plant tomatoes with a new system of trellising for greater air circulation. And I plan to use some organically approved sprays against diseases, something I've avoided so far. All the difficulties in the garden make me very glad I'm not doing this for a living, and make me more appreciative of the hard work and challenges facing those who do.