- Variety Info
- Sowing Info
- Growing Info
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Variety Info
Days to Maturity: 28 days
Family: Brassicaceae
Type: Spring/Summer radish (Learn more)
Native: Unknown
Hardiness: Frost-tolerant annual
Exposure: Full sun to part shade
Plant Dimensions: 2 ½"–3" leaf tops
Variety Info: 1 ½"–2" globe-shaped root with red skin and white interior; mild flavor.
Attributes: Frost Tolerant, Good for Containers
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.
Days to Emerge: 5–10 days
Seed Depth: ½"
Seed Spacing: A group of 3 seeds every 3"
Row Spacing: 12"
Thinning: When 1" tall, thin to 3" apart
Your hardiness zone is
Growing Info
Harvesting: Harvest when radish is no larger than 2" in diameter. If allowed to grow bigger, 'Crimson Giant' will get pithy and hot.
- ColeVerified BuyerRated 3 out of 5 stars7/22/243 Stars
Ok germination
- Perry S.Verified BuyerRated 3 out of 5 stars11/18/233 Stars
Did not produce radishes for me
BIBotanical Interests11/21/23Hey Perry, It sounds like you had a really tough growing season. I hope you respond to the email we sent so we can "dig" a little deeper into this. When radishes do not form a bulb, generally there is something else at play. Like most radishes, Crimson Giant produces best in cooler weather; growing these during the heat of the summer may result in little to no root development but will still produce greens. As we suggest on our packet, this one is best grown during the cooler months of the spring or fall, and it's a fast-grower that will typically produce a nice-sized radish in 28 days after germination. I hope that helps.
- RuthVerified BuyerRated 1 out of 5 stars5/9/221 Star
I tried growing these seeds in my bucket garden with no success. Any radish that grew was really just too hard to eat.
- AbbieVerified BuyerRated 5 out of 5 stars5/9/225 Stars
Someone gave me seeds they had kept for 15 years, packed for 2007. I planted them May 23, 2022. On May 27, today, I had to thin them! holy cow! I have a lot more seeds from this gift of packets and will report as they germinate. I am SO impressed and will start ordering my seeds from B.I. in the future.
- PennyVerified BuyerRated 5 out of 5 stars5/9/225 Stars
I loved these radishes, best radish I have ever had. I planted them in a container garden and they grew quickly and were mild, yet spicy at the same time. Delicious. Doubled my order this year.