Orders with subtotals $1,200 and above receive bulk pricing. Bulk prices will automatically be applied.
If you have placed orders totaling at least $1,200 at Fedco within the past 12 months, additional orders qualify for bulk pricing.
Ordering Deadline for Seeds: October 30, 2025
Orders placed in December take 2-3 weeks to process. Sorry, we cannot guarantee arrival in time for the holidays.
Orders with subtotals $1,200 and above receive bulk pricing. Bulk prices will automatically be applied.
If you have placed orders totaling at least $1,200 at Fedco within the past 12 months, additional orders qualify for bulk pricing.
This item is certified organicAbout 2,400-2,900 seeds/oz.
Days to maturity are from date of seeding
Culture: Summer radishes may be sown almost as soon as the ground can be worked. Minimum germination soil temperature 40°, optimal range 55–85°. They emerge rapidly and grow quickly. Sow 1–2" apart, and thin to at least 2" for attractive uniform roots. Use row cover (p. 144) to protect from flea beetles. They develop more pungency in dry heat than in cool moist weather. Ready for harvest at about the size of a quarter and will rapidly get woody if allowed to grow much larger.
Disease: FY: Fusarium Yellows
Note: We cannot ship packets greater than ½ oz. (14 grams) of radishes into the Willamette Valley. The State of Oregon prohibits shipping any commercial quantity of untreated Brassica, Raphanus or Sinapis due to quarantine
For the latest results of our germination tests, please see the germination page.
All of our seeds are non-GMO, and free of neonicotinoids and fungicides. Fedco is one of the original companies to sign the Safe Seed Pledge.