🍠 Can I Plant Radish in Minneapolis, MN?

2026 planting guide for Zone 4b · Last frost ~May 11 · Growing season ~143 days

✅ YES — Good time to plant for a fall harvest

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 Nov 5.

Planting window: Jul 30 – Aug 13
Sow radish seeds directly now for a fall harvest. Expect to harvest around Aug 21.
Live result based on current forecast for Minneapolis, MN · Updates every 6 hours
USDA Zone
4b
Last Spring Frost
~May 11
First Fall Frost
October 1
Growing Season
~143 days
Ideal Temp for Radish
40–65°F
Frost Risk
✅ Tolerant

Growing Radish in Minneapolis

Minneapolis's Zone 4b climate presents a genuine gardening challenge: a compressed season of roughly 140 days between the last frost in May and the first in October. Cold winters are part of daily life, but the long summer daylight hours accelerate plant growth remarkably. Start warm-season crops indoors in early April, use season extension tools liberally, and choose short-season varieties to maximize the window.

In Minneapolis (last frost around May 11), 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 Minneapolis, MN?

In Minneapolis (last frost around May 11), 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 Minneapolis?

Minneapolis, MN is in USDA Plant Hardiness Zone 4b. The last expected spring frost is around May 11, and the first fall frost arrives around October 1. 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 Minneapolis 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 Minneapolis 2026?

Yes — Radish grows well in Minneapolis, MN. With a Zone 4b climate and a growing season of ~143 days, Minneapolis 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

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