The brassicas—cabbage, broccoli, cauliflower, kale, and so much more—are satisfying at seeding time because they usually come up quick. This tray of Early Dividend broccoli is popping only three days after seeding. I don’t take notes about days to germination, except occasionally here on the blog, but I’m surely watching, especially with older seed. So far this year, with the seedling room usually around 65-68°F (18-20°C), the trays covered with clear plastic, using new seed, it’s been brassicas in 3 days, onions starting around 5. Where brassicas usually come up all at once, over a couple of days, onions can take a week to emerge right across a tray… Details! They’re everywhere! Some seem useful, some seem not.
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