🥬 Can I Plant Mustard Greens in Phoenix, AZ?

2026 planting guide for Zone 10a · Last frost ~January 30 · Growing season ~320 days

✅ YES — Good temps, but watch for heat — highs near 116°F

Temperature conditions are suitable for Mustard Greens. Highs near 116°F are on the warm side — make sure plants have plenty of water.

Planting window: Jul 2 – Jul 16
Good to go — plant now while conditions are right.
Live result based on current forecast for Phoenix, AZ · Updates every 6 hours
USDA Zone
10a
Last Spring Frost
~January 30
First Fall Frost
December 15
Growing Season
~320 days
Ideal Temp for Mustard Greens
40–65°F
Frost Risk
✅ Tolerant

Growing Mustard Greens in Phoenix

Phoenix Zone 10a gardeners plant on an inverted schedule compared to most of the country. Winters are ideal for vegetables while summers are simply too hot for most food crops. Cool-season vegetables thrive October through April; heat-loving crops like tomatoes peak in spring before temperatures exceed 100°F regularly in June.

In Phoenix (last frost around January 30), mustard greens can go out around December — approximately 6 weeks before the last expected frost, making it an early-season opportunity.

Mustard Greens thrives between 40°F and 65°F. It tolerates temperatures as low as 25°F, making it a candidate for early spring planting before the last frost date. Expect 25–45 days from transplant to first harvest. Fast-growing cool-season green. Bolts in heat.

Frequently Asked Questions

When can I plant mustard greens in Phoenix, AZ?

In Phoenix (last frost around January 30), mustard greens can go out around December — approximately 6 weeks before the last expected frost, making it an early-season opportunity.

What is the USDA hardiness zone for Phoenix?

Phoenix, AZ is in USDA Plant Hardiness Zone 10a. The last expected spring frost is around January 30, and the first fall frost arrives around December 15. This zone classification helps you understand which perennials survive winter and when annual vegetables can safely go outdoors.

Is it safe to plant mustard greens outside in Phoenix right now?

That depends on the current weather forecast. Mustard Greens needs temperatures above 25°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 mustard greens in Phoenix 2026?

Yes — Mustard Greens grows well in Phoenix, AZ. With a Zone 10a climate and a growing season of ~320 days, Phoenix is well-suited for cool-season crops like mustard greens. As a frost-tolerant crop, mustard greens can even go out a few weeks before the last frost date.

Grow Mustard Greens in Other Cities

New York, NYLos Angeles, CAChicago, ILHouston, TXPhiladelphia, PASan Antonio, TXSan Diego, CADallas, TX

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 mustard greens right now.

Check My ZIP Code →