🍠 Can I Plant Radish in Austin, TX?

2026 planting guide for Zone 8b · Last frost ~February 24 · Growing season ~278 days

⏳ WAIT — Too cold — lows near 0°F (min 32°F)

Radish needs nights consistently above 32°F to thrive. Current forecast lows of ~0°F are below that threshold. Wait for warmer overnight temperatures.

Planting window: Jun 18 – Jul 2
Wait until overnight lows are consistently above 32°F before planting.
Live result based on current forecast for Austin, TX · Updates every 6 hours
USDA Zone
8b
Last Spring Frost
~February 24
First Fall Frost
November 28
Growing Season
~278 days
Ideal Temp for Radish
40–65°F
Frost Risk
✅ Tolerant

Growing Radish in Austin

Austin's Zone 8b climate is excellent for ambitious gardeners. With roughly 275 frost-free days, you can grow two full vegetable seasons and experiment with subtropical crops. The limestone-heavy soil benefits from amendment, but the long growing season more than compensates — tomatoes, peppers, and sweet potatoes all thrive here.

In Austin (last frost around February 24), radish can go out around January — 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 Austin, TX?

In Austin (last frost around February 24), radish can go out around January — approximately 6 weeks before the last expected frost, making it an early-season opportunity.

What is the USDA hardiness zone for Austin?

Austin, TX is in USDA Plant Hardiness Zone 8b. The last expected spring frost is around February 24, and the first fall frost arrives around November 28. 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 Austin 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 Austin 2026?

Yes — Radish grows well in Austin, TX. With a Zone 8b climate and a growing season of ~278 days, Austin 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

New York, NYLos Angeles, CAChicago, ILHouston, TXPhoenix, AZPhiladelphia, PASan Antonio, TXSan Diego, CA

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