Botanical Interests
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Product Details
Product Details
Your hardiness zone is
- Variety Info
- Sowing Info
- Growing Info
Variety Info
Days to Maturity: 25-30 days
Family: Brassicaceae
Type: Spring/Summer radish (Learn more)
Native: Unknown
Hardiness: Frost-tolerant annual
Exposure: Full Sun to Part Shade
Plant Dimensions: 4" tops and 1" rounded root
Variety Info: Vibrant purple skin with a crisp, white interior that has a mild, sweet flavor
Attributes: Frost Tolerant
Sowing Info
When to Sow Outside: RECOMMENDED. 4 to 6 weeks before your average last frost date, and when soil temperature is above 40°F, ideally 65°‒85°F. Successive Sowings: Every 1 to 2 weeks until late spring. Sow again in late summer until 4 weeks before your average first fall frost date.
When to Start Inside: Not recommended; roots sensitive to disturbance.
Sprouts in: 5 ‒ 10 Days
Plant Seeds (Depth): 1/2"
Space Seeds: 1"
Row Spacing: 12"
Thinning: When 1" tall, thin to 3" apart
Growing Info
Harvesting: Harvest when radish is no larger than 1" in diameter. If allowed to grow bigger, Purple Plum will get pithy and hot.
Special Care: Flea beetles leave small holes in the leaves, which can impact the formation of the radish root. If you live in an area where flea beetles are problematic, cover the seeded area with row covers until harvest.
- Andrea G.Verified ReviewerRated 5 out of 5 starsJul 27, 2026Yummy!
I got these for being in the greenhouse subscription and we planted them out the same day and we just harvest a few and my 2 year old loves them. If people come over and want to try something new I always suggest these radishes if available. We are going to start our next succession next week.
Which best describes you as a gardener? BeginnerEGEpic GardeningJul 28, 2026Hey Andrea,
We're so happy to hear about your incredible experience with the Purple Plum Radish Seeds! There's nothing better than getting radishes that are so yummy your 2 year old can't get enough of them - that's the ultimate stamp of approval! We love that you're already recommending these to friends and family when they want to try something new. And how awesome that you're planning to start your next succession next week so you can keep enjoying these delicious radishes throughout the season! Thanks for sharing your Purple Plum Radish growing success with us and for being part of the greenhouse subscription! Keep on growing 🌻
