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ferroplasm

broccoli and brussel sprouts stuck at cotyledon stage

I sowed my broccoli and brussels sprouts on July 24. They emerged on July 28. Since then, all that's happened is the cotyledons expanded. The first set of true leaves haven't yet emerged. It's been quite hot here in zone 7b, but I've been watering them well. They're currently in full sun. Could the heat be slowing their development? I expected them to be pushing our leaves by now.



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