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Cold Crop Seeds

Cold crops (or cool-season crops) are great for extending your season and getting out in the dirt even before the summer’s in full swing. No matter your location, at A.M. Leonard, we’ve got a wide variety of seeds you and your backyard will love.
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When should I plant my cool season crop?

Cold crops thrive in soil above 40 degrees and the climate below 70, so ideally, you should get them in the ground sometime in early spring. But to know precisely when, first you need to know about a thing called hardiness:

Hardy vs. semi-hardy: What’s the difference?

Which plants can you grow in Spring? That depends on 2 things: 1) where you live, and 2) how hardy your vegetables are.

Hardy vegetables (broccoli, brussels sprouts, cabbage, and parsnips) can tolerate cold temperatures and heavy frost. That means they can go in the ground earlier, about 3-4 weeks before final frost. Semi hardy vegetables (cauliflower, celery, carrots, lettuce, and potato) can stand only a light frost — sow these 1-2 weeks before final frost.

Finally, you can consult the USDA Plant Hardiness Zone Map (which tells you the average annual minimum winter temperature for locations all over the U.S.) for guidance on which plants are likely to thrive in your location.

Cold crops are essential for anyone who lives in a cold part of the country; they’re also great for getting an early start on the season and extending the harvest. At A.M. Leonard, we think you should have a beautiful garden no matter where you live — for more high-quality seeds, check out our corn seeds, cucumber seeds, and the rest of our vegetable seeds.