RadishEasily planted from seed, organic gardeners enjoy growing radishes for their crisp, peppery roots.

Sunlight: Full sun to partial shade
Maturity: 20-60 days
Height: 6 to 18 inches
Spacing: 1 to 2 inches apart, 8 to 18 inches between rows

The perfect cool-weather crop for impatient young gardeners– radishes can be grown, harvested and eaten in as little as three weeks! These potent root vegetables are chock-full of vitamins C and B6, minerals and dietary fiber and are members of the Brassicaceae family, which makes them cousins to cabbage and broccoli.

Planet Natural offers a wide selection of non-treated, non-GMO heirloom radish seeds for your vegetable gardening pleasure. Best of all, they’re shipped FREE!

Site Preparation:

Radish grows best in the spring and autumn and will tolerate light winter frosts. It requires full to partial sun, ample water and rich, fast draining soil. Loosen soil to a depth of 8 inches and work in 10 pounds of organic compost per 100 square feet.

Tip: Consider adding kelp meal to vegetable gardens. It’s chock-full of micro-nutrients and is especially good for supplying trace minerals to crops that will be consumed.

How to Plant:

Sow seeds in the garden, 1/2 inch deep, as soon as you can work the soil. Plant weekly to spread harvest throughout the planting season. Space rows 8-18 inches apart, planting eight to ten seeds per foot. Thin to one plant every 2 inches.

Tip: Keep garden areas cool and well mulched with compost. High temperatures and drought make this vegetable tough, strong tasting and prone to insect problems.


Pull radishes when they are of usable size (usually when they reach up to 1 inch in diameter) and relatively young. Check often, as radishes can turn from tasty to terrible (pithy and spongy) in a short period of time. Spring radishes mature in 3-5 weeks. Winter types mature in 55-60 days.

Insects and Diseases:

Radishes are related to cabbage and suffer from many of the same problems. Since leaves are not harvested, more insect damage can be tolerated than other vegetable plants.

Seed Saving Instructions:

Radishes will cross-pollinate and must be isolated by 1/2 mile or planted in insect-proof cages covered with screen. Radish seed stalks will grow up to 3 feet tall. Always discard the early bolting plants, since they are not the best plants to save for seed. The seed stalk is harvested when the stalk and pods are dry. Seeds can then be separated by hand.

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