When to Plant Broccoli in Nevada
Published: April 21, 2026
Nevada gardeners in Zone 9a enjoy an extended 46-week growing season for broccoli. Cool-season crops like broccoli 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.
Broccoli Planting Dates for Nevada
| Start seeds indoors | December 19–26 |
| Last frost (average) | January 30 |
| Transplant outdoors | January 2–12 |
| Direct sow outdoors | January 2–12 |
| Expect first harvest | March 3 – March 23 |
| Fall crop start | October 6–16 |
| Fall harvest | December 5 |
| 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.
Growing Broccoli in Nevada's Climate
Nevada's warm Zone 9a climate makes broccoli 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 broccoli will bolt (send up a flower stalk and turn bitter) before it produces a harvestable crop.
Succession planting stretches the broccoli 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 broccoli pests to watch for in Nevada include Cabbage Worm and Cabbage Looper. The first line of defense is companion planting: Onion and Garlic 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.
Broccoli Garden Calendar for Nevada
| Month | Task | Notes |
|---|---|---|
| January | Transplant outdoors | Soil temp must be 40°F+; nighttime lows above 50°F |
| February | — | Off-season |
| March | First harvest window opens | Broccoli begins producing 60–80 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 |
Broccoli Growing Tips for Nevada Gardeners
- •For spring: start indoors 6 weeks before last frost and transplant outdoors 4 weeks before last frost.
- •For fall: start indoors in summer — count 10 weeks back from your first fall frost date.
- •Nevada's cool-season broccoli plants best in October, November, and December for winter and early spring harvest. Spring plantings bolt before producing a harvestable crop.
- •Harvest heads before any yellow flowers open — once flowers show, flavor declines quickly.
Companion Planting for Broccoli in Nevada
In Nevada's warm climate, planting broccoli with Onion and Garlic helps deter pests and improve soil. Avoid planting near Tomato and Pepper, which inhibit broccoli growth through root chemistry or shared pest pressure. See the full broccoli companion planting guide for the complete list.
Broccoli 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 broccoli in Nevada?
In Nevada (Zone 9a), start broccoli seeds indoors around December 19–26 and transplant outdoors around January 2–12 — 4 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 broccoli year-round in Nevada?
broccoli 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 broccoli varieties grow best in Nevada?
For Nevada's Zone 9a, Calabrese and Packman resist bolting in brief warm spells during the cool-season window.
When do I start broccoli seeds indoors in Nevada?
Start broccoli seeds indoors in Nevada around December 19–26, which is 6 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.