When to Plant Collard Greens in Texas
Published: April 24, 2026
Texas gardeners in Zone 8a enjoy an extended 41-week growing season for collard green. Cool-season crops like collard green do best in fall, winter, and early spring in Texas — the hot summers bolt these plants before they can be harvested. This guide gives exact dates for Texas based on your local frost calendar.
Collard Green Planting Dates for Texas
| Start seeds indoors | January 11–18 |
| Last frost (average) | February 15 |
| Transplant outdoors | January 25–February 4 |
| Direct sow outdoors | January 25–February 4 |
| Expect first harvest | March 26 – April 10 |
| Fall crop start | September 22–October 2 |
| Fall harvest | November 21 |
| First fall frost (average) | December 1 |
Dates above assume Zone 8a, the most common zone in Texas. Gardeners in cooler Denton (Zone 7b) plant 1–2 weeks later; warmer McAllen (Zone 9b) can plant 1–2 weeks earlier.
⚠ Direct sow or transplant collard greens 3–4 weeks before last frost. Extremely cold hardy — withstands temps to 15°F. Can be grown as a perennial in Zones 8+. Fall planting produces the best-flavored greens.
Growing Collard Greens in Texas's Climate
Texas's warm Zone 8a climate makes collard green a fall, winter, and early spring crop rather than a summer one. The cool-season window runs roughly October through April in Texas — plant outside this window and the collard green will bolt (send up a flower stalk and turn bitter) before it produces a harvestable crop.
Succession planting stretches the collard green 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 collard green pests to watch for in Texas include Cabbage Worm and Aphid. 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.
Collard Green Garden Calendar for Texas
| Month | Task | Notes |
|---|---|---|
| January | Transplant outdoors | Soil temp must be 45°F+; nighttime lows above 50°F |
| February | Harden off seedlings | Set seedlings outdoors 1–2 hours daily, increasing gradually |
| March | First harvest window opens | Collard Green begins producing 60–75 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 | Fall crop planting | Transplant or direct sow for fall harvest before frost |
| October | — | Off-season |
| November | — | Off-season |
| December | First frost approaches | Harvest remaining collard green; cover plants on frost nights |
Collard Green Growing Tips for Texas Gardeners
- •Harvest outer leaves continuously once plants reach 10 inches — the central growing point produces for months.
- •In Zones 8+ collard greens often overwinter and produce for 2–3 years as a perennial.
- •Texas's cool-season collard green plants best in October, November, and December for winter and early spring harvest. Spring plantings bolt before producing a harvestable crop.
- •Frost improves flavor dramatically — southern tradition is to wait for the first frost before harvesting.
Companion Planting for Collard Greens in Texas
In Texas's warm climate, planting collard green with Onion and Garlic helps deter pests and improve soil. Avoid planting near Tomato and Strawberry, which inhibit collard green growth through root chemistry or shared pest pressure. See the full collard green companion planting guide for the complete list.
Collard Greens Planting Dates by City in Texas
Top cities in Texas — select for city-level frost dates and planting calendars.
Frequently Asked Questions
When should I plant collard green in Texas?
In Texas (Zone 8a), start collard green seeds indoors around January 11–18 and transplant outdoors around January 25–February 4 — 3 weeks before the state's average last frost of February 15.
What is the last frost date in Texas?
Texas's average last frost date is February 15 in the state's most common Zone 8a. 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 collard green year-round in Texas?
collard green is a cool-season crop in Texas, 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 collard green varieties grow best in Texas?
For Texas's Zone 8a, consult a local nursery or extension office for collard-greens variety recommendations.
When do I start collard green seeds indoors in Texas?
Start collard green seeds indoors in Texas around January 11–18, which is 5 weeks before the state's average last frost of February 15. Use grow lights and keep soil temperatures at 70–75°F for fastest germination.