Hamilton College Community Farm

Plant: Radishes

Family: Brassica

Seed Varieties:
  • Ping-Pong White variety
  • D’Avignon - French breakfast variety. Oblong, red and white variety
  • Early Scarlett Globe - Standard red skin, white flesh variety
  • Alta Globe - Purple skin, white flesh variety
Indoor Start Date and Cell Size:

Radishes are directly seeded in the garden.

Greenhouse Transplant Date and Cell Size:

Radishes are directly seeded in the garden.

Outdoor Transplant Date and Bed Specifications:

Directly seed on the seventh of every month from April through August. Plant the seeds four inches apart with three rows per bed. Once the seeds have germinated, thin the radishes if necessary, as the plants need enough room for their roots to develop.

Plant Needs and Cultivation Techniques:

Adequate water and well-fertilized soil is important for the healthy development of radishes. While able to grow under most conditions, slow development will result in an undesirable spicy, tough radish. Growing better in cool weather, heat and dry will often slow the development, which in other conditions is quite rapid. Be sure to control weeds all throughout the growing season by hand cultivation to promote growth.

Harvest Techniques:

Because radishes mature quite quickly (approximately 30 days from seed to harvest) they should be checked quite frequently. Once the radish is just under an inch in diameter, they can be pulled up carefully. The harvest will go quite quickly, as radishes rapidly becoming pithy and hot, and are overall better when young and small.


After washing, radishes can be kept refrigerated in a perforated plastic bag. They will store with the greens overnight, but if being kept for longer, the tops should be removed. They will store quite well in the refrigerator for up to a week before starting to lose some of their crunch and flavor.


Sell retail for $2.00 for a bunch of five to seven. For wholesale, sell at $1.25 a bunch.