Beet seeds should take about 10 days to germinate at 59☏ (15☌), but the seeds usually germinate more quickly because soil generally continues to warm after the seeds are planted. I like to plant my beet seeds outdoors when the soil reaches about 60☏ (15☌). While beet seeds can germinate in soil as cool as 40☏ (4☌), they germinate much more quickly in the range of 65°-85☏ (18°-29☌). Beet seeds germinate in a wide range of temperatures, sprouting when soil is anywhere between 40°-95☏ (4°-35☌). The beet is a classic early spring garden vegetable. A second crop can be sown in the fall, particularly in areas with mild autumn temperatures. Peas are generally sown in early spring for a late spring/early summer harvest. That said, peas germinate much more quickly in the range of 65°-75☏ (18°-24☌). Get these seeds in the ground before spring temperatures get too hot! Peas have large seeds that germinate when soil is between 40°-85☏ (4°-29☌). Pea seeds are another early spring favorite. Try to harvest alternating plants as you move down a row or through a square foot to allow the remaining plants extra room to receive sunlight and water. Most gardeners harvest whole green onion plants at once, pulling up the entire plant (roots and all). That said, onion seeds can germinate in a week at 59☏ (15☌), and have an optimal soil temperature range of 65°-85☏ (18°-29☌) for germination. These cool-season seeds can germinate (albeit slowly) in soil as low as barely above freezing (32☏/0☌). Onion seeds – particularly green onion seeds (scallions) – can be sown quite early in the spring. A second fall crop of carrots can be seeded in late summer for a late fall-winter harvest. Spring-grown carrots are usually harvested in early summer to make way for warm-season crops like tomatoes and peppers. I tend to plant my carrots outdoors about 4 weeks before the last frost date. Gardeners using a cold frame or frost cover may be able to direct seed 8-12 weeks before the last frost date. Carrot seeds can germinate in soil temperatures from 40°-95☏ (4°-35☌), although optimal temperatures are in the range of 65°-85☏ (18°-29☌). CarrotsĬarrot is one of my favorite early spring crops. See my favorite vegetable varieties to grow for recommendations. Some gardeners prefer leaf lettuce (like Black-Seeded Simpson) while others like to mix in some head-forming types of lettuce. Lettuce can be seeded throughout the spring for a continuous crop. While these seeds can germinate at 32☏ (0☌) over several months, lettuce seeds germinate in about a week at 50☏ (10☌) soil. Lettuce seeds can germinate at exceptionally low temperatures. Lettuce is another favorite early spring crop to direct seed. Soil temperature chart for germinating seeds outdoors in cool weather 1.
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