When to Plant Cauliflower in Nevada
Published: April 24, 2026
Nevada gardeners in Zone 9a enjoy an extended 46-week growing season for cauliflower. Cool-season crops like cauliflower do best in fall, winter, and early spring in Nevada — the hot summers bolt these plants before they can be harvested. This guide gives exact dates for Nevada based on your local frost calendar.
Cauliflower Planting Dates for Nevada
| Start seeds indoors | December 26–January 2 |
| Last frost (average) | January 30 |
| Transplant outdoors | January 9–19 |
| Expect first harvest | March 5 – April 19 |
| Fall crop start | October 6–16 |
| Fall harvest | November 30 |
| First fall frost (average) | December 15 |
Dates above assume Zone 9a, the most common zone in Nevada. Gardeners in cooler Reno (Zone 6a) plant 1–2 weeks later; warmer Las Vegas (Zone 9a) can plant 1–2 weeks earlier.
⚠ Start cauliflower indoors 4–6 weeks before last frost. Transplant 2–4 weeks before last frost. Needs consistent moisture and cool temps — bolts in heat above 75°F.
Growing Cauliflower in Nevada's Climate
Nevada's warm Zone 9a climate makes cauliflower a fall, winter, and early spring crop rather than a summer one. The cool-season window runs roughly October through April in Nevada — plant outside this window and the cauliflower will bolt (send up a flower stalk and turn bitter) before it produces a harvestable crop.
Succession planting stretches the cauliflower harvest window. Sow small amounts every two weeks from October through February — you will have staggered harvests rather than a single wave to process all at once. Bolt-resistant varieties extend the usable window an extra three to four weeks into warming weather.
Common cauliflower pests to watch for in Nevada include Cabbage Worm and Cabbage Looper. The first line of defense is companion planting: Onion and Celery planted nearby discourage several of these pests by confusing host-plant identification or repelling adults before they can lay eggs. Weekly garden walks in the early morning catch problems when they're still manageable.
Cauliflower Garden Calendar for Nevada
| Month | Task | Notes |
|---|---|---|
| January | Transplant outdoors | Soil temp must be 45°F+; nighttime lows above 50°F |
| February | — | Off-season |
| March | First harvest window opens | Cauliflower begins producing 55–100 days after transplant |
| April | — | Off-season |
| May ← | Watch for bolting | Harvest promptly; spring heat arrives quickly |
| June | — | Off-season |
| July | — | Off-season |
| August | — | Off-season |
| September | — | Off-season |
| October | Fall crop planting | Transplant or direct sow for fall harvest before frost |
| November | — | Off-season |
| December | Start seeds indoors | Use grow lights; warm soil to 70–75°F for best germination |
Cauliflower Growing Tips for Nevada Gardeners
- •Blanch white varieties by tying outer leaves over the head when it reaches egg-size — prevents yellowing from sun exposure.
- •Keep soil evenly moist — drought stress causes small, bitter 'buttoning' heads instead of full curds.
- •Nevada's cool-season cauliflower plants best in October, November, and December for winter and early spring harvest. Spring plantings bolt before producing a harvestable crop.
- •Plant fall crops in mid-July to mid-August for October harvest; fall cauliflower is usually larger and sweeter than spring.
Companion Planting for Cauliflower in Nevada
In Nevada's warm climate, planting cauliflower with Onion and Celery helps deter pests and improve soil. Avoid planting near Tomato and Strawberry, which inhibit cauliflower growth through root chemistry or shared pest pressure. See the full cauliflower companion planting guide for the complete list.
Cauliflower Planting Dates by City in Nevada
Top cities in Nevada — select for city-level frost dates and planting calendars.
Frequently Asked Questions
When should I plant cauliflower in Nevada?
In Nevada (Zone 9a), start cauliflower seeds indoors around December 26–January 2 and transplant outdoors around January 9–19 — 3 weeks before the state's average last frost of January 30.
What is the last frost date in Nevada?
Nevada's average last frost date is January 30 in the state's most common Zone 9a. Frost dates vary by city — higher elevations and northern counties run 1 to 3 weeks later than the state average. See the city list below for city-level frost dates.
Can I grow cauliflower year-round in Nevada?
cauliflower is a cool-season crop in Nevada, with spring and fall windows. Summer heat bolts the plants before they can produce a harvestable crop. Succession planting every 2–3 weeks stretches the harvest window.
What cauliflower varieties grow best in Nevada?
For Nevada's Zone 9a, consult a local nursery or extension office for cauliflower variety recommendations.
When do I start cauliflower seeds indoors in Nevada?
Start cauliflower seeds indoors in Nevada around December 26–January 2, which is 5 weeks before the state's average last frost of January 30. Use grow lights and keep soil temperatures at 70–75°F for fastest germination.