🍠 Can I Plant Radish in Colorado Springs, CO?
Radish thrives in cool weather and can be planted now for a fall harvest. Sow seeds soon — they'll be ready around Aug 21–Aug 29, well before the average first frost around Oct 18.
Growing Radish in Colorado Springs
Colorado Springs at 6,035 feet sits in Zone 5b with one of the shortest growing seasons on this list — about 140 days. Late spring frosts can arrive into mid-May, and first fall frosts can come as early as late September. High-altitude sun intensity and dry air require consistent irrigation. Cold frames, row covers, and raised beds with black plastic mulch are essential tools for Colorado Springs gardeners.
In Colorado Springs (last frost around May 10), radish can go out around March — approximately 6 weeks before the last expected frost, making it an early-season opportunity.
Radish thrives between 40°F and 65°F. It tolerates temperatures as low as 32°F, making it a candidate for early spring planting before the last frost date. Expect 22–30 days from transplant to first harvest. One of the fastest vegetables. Spring or fall.
Frequently Asked Questions
When can I plant radish in Colorado Springs, CO?
In Colorado Springs (last frost around May 10), radish can go out around March — approximately 6 weeks before the last expected frost, making it an early-season opportunity.
What is the USDA hardiness zone for Colorado Springs?
Colorado Springs, CO is in USDA Plant Hardiness Zone 5b. The last expected spring frost is around May 10, and the first fall frost arrives around September 30. This zone classification helps you understand which perennials survive winter and when annual vegetables can safely go outdoors.
Is it safe to plant radish outside in Colorado Springs right now?
That depends on the current weather forecast. Radish needs temperatures above 32°F (ideally 40–65°F) to thrive. CanIPlant checks your real 7-day forecast and any active frost alerts to give you a live YES, NO, or WAIT answer — just enter your ZIP code.
Can I grow radish in Colorado Springs 2026?
Yes — Radish grows well in Colorado Springs, CO. With a Zone 5b climate and a growing season of ~143 days, Colorado Springs is well-suited for cool-season crops like radish. As a frost-tolerant crop, radish can even go out a few weeks before the last frost date.
Grow Radish in Other Cities
Get a live answer for your exact address
Enter your ZIP code — CanIPlant checks your real 7-day forecast, frost alerts, and 30-year climate data to tell you whether to plant radish right now.
Check My ZIP Code →