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pH: 5.8–6.8  ·  Loose, well-drained

Low; moderate potassium

Radish is a crisp, peppery root vegetable that matures in as little as 25-30 days, making it one of the fastest crops for home gardeners. It's eaten raw in salads, sliced on charcuterie boards, or pickled, and some varieties offer attractive edible greens. Gardeners grow radishes to quickly fill garden space, teach children about fast-growing crops, and enjoy the satisfying crunch of fresh harvests.

Radish seeds germinate reliably at soil temperatures between 50-70°F (10-21°C) and sprout in 3-7 days. They prefer direct sowing and don't need light to germinate, but soil should remain consistently moist during sprouting. No pre-treatment is necessary; sow seeds directly outdoors as soon as soil is workable in spring, or succession-plant every 2-3 weeks for continuous harvests.

Direct sow radish seeds ¼ to ½ inch deep in loose, well-draining soil, spacing seeds 1-2 inches apart in rows 6 inches apart. Thin seedlings to final spacing of 2-3 inches once they emerge; thinned greens are edible. Radishes don't transplant well due to their quick growth cycle, so direct sowing is standard. Plant in early spring and again in late summer for fall crops; they tolerate cool weather and bolt quickly in heat.

Keep soil consistently moist but not waterlogged to ensure tender, crisp roots; inconsistent watering causes cracking and pithy texture. Radishes need minimal fertilizer if soil is reasonably fertile; excess nitrogen encourages leafy growth over root development. Common issues include root maggots (use row covers to prevent) and flea beetles on seedlings (spray with neem oil if needed). Thin crowded seedlings promptly to prevent misshapen roots.

Harvest radishes when roots reach finger-thickness, typically 25-30 days from sowing; smaller radishes are more tender and less peppery. Pull gently when soil is moist to avoid breaking the root, and remove greens promptly if storing. Store cleaned radishes in a plastic bag in the refrigerator for up to 2-3 weeks; wash and trim just before eating for best crispness.