🍠 Can I Plant Radish in Anchorage, AK?

2026 planting guide for Zone 5a · Last frost ~May 20 · Growing season ~118 days

✅ YES — Good temps, but watch for heat — highs near 73°F

Temperature conditions are suitable for Radish. Highs near 73°F are on the warm side — make sure plants have plenty of water.

Planting window: May 4 – May 18
Good to go — plant now while conditions are right.
Live result based on current forecast for Anchorage, AK · Updates every 6 hours
USDA Zone
5a
Last Spring Frost
~May 20
First Fall Frost
September 15
Growing Season
~118 days
Ideal Temp for Radish
40–65°F
Frost Risk
✅ Tolerant

Growing Radish in Anchorage

Anchorage's Zone 5a subarctic climate presents extreme gardening constraints — a frost-free window of roughly 115 days from late May through mid-September. However, the extraordinary summer daylight (nearly 20 hours near solstice) accelerates plant growth at an astonishing rate. Cold-hardy crops like kale, lettuce, peas, radishes, and carrots are best suited. Greenhouses and cold frames dramatically extend the season.

In Anchorage (last frost around May 20), radish can go out around April — 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 Anchorage, AK?

In Anchorage (last frost around May 20), radish can go out around April — approximately 6 weeks before the last expected frost, making it an early-season opportunity.

What is the USDA hardiness zone for Anchorage?

Anchorage, AK is in USDA Plant Hardiness Zone 5a. The last expected spring frost is around May 20, and the first fall frost arrives around September 15. 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 Anchorage 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 Anchorage 2026?

Yes — Radish grows well in Anchorage, AK. With a Zone 5a climate and a growing season of ~118 days, Anchorage 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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