Growing Tips: Radish

Quick Reference:

Plant seed 1/8 to 1/4 inch deep spaced ½ to 1 inch apart. Germination: 7 to 14 days. Space between plants in the garden after thinning, 1 to 2 inches. Shallow planting provides warmer soil for better germination but soil MUST be kept moist at all times until seedlings emerge.

When and where to plant:

Radishes grow rapidly and are of high quality when grown during Alaska's cool summer days. Radishes are easy to grow and grow well in any garden soil. Plant seed directly in the garden as soon as the soil can be prepared in the spring. The seed readily germinates when the soil temperature is in the low 40's. Choose a sunny garden location, cultivate soil, enrich with plant food, smooth the soil surface, plant seed, firm soil over seed and keep moist until seedlings emerge. Plant a short row every few days to give continuous fresh radishes all summer. Plenty of soil moisture is the key to great radishes.


Radishes MUST be protected from root maggots. Thin seedlings so the plants are 1 to 2 inches apart. Apply plant food before planting and water often for top quality.


Start pulling when roots are 1 inch in diameter