Direct Sow
Planting seeds directly into their permanent garden location rather than starting them indoors and transplanting seedlings later.
Direct sowing means putting seeds straight into the ground where they’ll grow to harvest. No seed trays, no germination setup indoors, no transplant step. The seeds go into prepared garden soil and stay there.
Which Crops Require It
Some crops do not transplant well and should only be direct sown. Carrots, parsnips, and other taprooted vegetables form their edible root at the point where the taproot descends - disturbing that taproot during transplant produces forked, stubby, or deformed roots. Radishes mature so quickly (21-30 days) that starting them indoors makes no practical sense. Peas and beans have fragile roots that resent disturbance. Dill and cilantro bolt readily when transplanted because root stress triggers the plant’s seed-production response.
For these crops, direct sowing is not a preference - it’s the method that works.
When Direct Sowing Makes Sense for Other Crops
Even for crops that can be transplanted, direct sowing has advantages in the right conditions:
Cost. Direct sowing uses seeds at $0.02-0.05 each rather than transplants at $0.50-3.00 each. For a large planting of lettuce or spinach, the economics favor seed.
Simplicity. No indoor growing space, no grow lights, no hardening-off process.
Cool-season crops. Spinach, arugula, kale, and lettuce can be direct sown because they germinate well in cool soil (40-60°F) and don’t require the extended indoor start time that frost-tender crops need.
Soil Preparation
Direct sowing succeeds or fails on soil surface condition. Seeds need firm contact with moist soil to germinate; they cannot bridge air gaps or penetrate a hard crust. A raked, fine-textured seedbed without large clods gives seeds the best start. In heavy clay soils, working in compost before sowing improves germination rates significantly.
Soil temperature matters more than air temperature for germination. Most seeds germinate fastest at 65-75°F soil temperature. Cool-season crop seeds germinate at lower temperatures (40-50°F minimum for peas and spinach); warm-season seeds like beans and corn fail in cold soil below 60°F and rot before germinating.
Sowing Depth
The standard rule is to plant seeds at a depth of 2-3 times their diameter. Fine seeds like carrot and lettuce go in at 1/8 to 1/4 inch. Larger seeds like beans and peas go in at 1-1.5 inches. Burying seeds too deep delays emergence or prevents it entirely - this is one of the more common direct sowing failures.
Thinning
Direct sowing often requires thinning after germination. You’ll sow more seeds than you need to guarantee germination and then remove the excess seedlings. Thinning is not optional for crops like carrots and beets - crowded roots produce small, forked product. Thin to the recommended spacing when seedlings have their first true leaves, not at emergence.
Succession Sowing
Direct sowing enables succession planting more easily than transplanting does. Sowing a short row of lettuce or radishes every 2-3 weeks produces a continuous harvest rather than one glut, and the logistics are simple: open the seed packet, draw a row, cover and water.