When to Plant Collard Greens in Kleberg County, TX
Top priorities for Kleberg County, Texas gardeners in May
May is a pivotal month for Kleberg County, Texas gardens. Focus on these tasks first and you'll set up the rest of the season for success.
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Harvest collard greens as they ripen
Don't tug. Use scissors or pruners for clean cuts — torn stems invite disease.
June prep starts now
- First harvests: collard greens
Collard greens are a heat-tolerant member of the cabbage family with large, sturdy leaves. They are a Southern staple and one of the most nutritious leafy greens.
Kleberg County, Texas is in USDA Zone 9b. The average last spring frost is February 13 and the first fall frost is December 9, giving you a growing season of approximately 299 days.
At an elevation of 1,079 feet, Kleberg County receives approximately 64.4 inches of rainfall annually with predominantly loam soil. Summer highs average 102°F, so Collard Greens may need afternoon shade and extra watering during peak heat. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Collard Greens root diseases.
Kleberg County Soil Profile
Soil Type
Loam
Soil pH
6.7-7.6
Drainage
Well Drained
Plant Planting Risk Windows
Percentages indicate frost risk at transplant. The 70% safe window means there is a 30% chance of frost after transplant — suitable for cold-hardy crops or gardeners with frost protection. The 90% safe window is best for tender plants.
Soil Compatibility in Kleberg County
How your county's soil matches Collard Greens's growing requirements.
Soil pH
Your soil pH (6.7–7.6) is more alkaline than Collard Greens prefers (6.0–7.0). Add sulfur or peat moss to lower pH.
Soil Texture
The loam soil in Kleberg County is excellent for Collard Greens — good drainage, moisture retention, and nutrient holding capacity.
Organic Matter
Organic matter is low (1.9%). Add 2-3 inches of compost before planting Collard Greens.
How to Plant Collard Greens
Fall planting: Sow 8 weeks before your first frost date for a fall harvest.
Succession Planting Collard Greens
Sow every 6.3 weeks. Last sowing by Sep 25 to harvest before frost.
For a dedicated fall crop, sow by Oct 14.
Plant Water Budget
Water stress score is 6/10 — consider drought-tolerant varieties and mulching
Monthly Watering Guide for Collard Greens
Collard Greens needs approximately 0.8 inches of water per week (3.5" per month). Here's how your county's rainfall compares month by month.
| Month | Collard Greens Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 1.7" | 0" | ❄️ Dormant |
| Feb | 3.5" | 2" | 1.5" | 💧 Light watering |
| Mar | 3.5" | 4.3" | 0" | ✅ Rainfall sufficient |
| Apr | 3.5" | 7.4" | 0" | ✅ Rainfall sufficient |
| May | 3.5" | 10.2" | 0" | ✅ Rainfall sufficient |
| Jun | 3.5" | 9.8" | 0" | ✅ Rainfall sufficient |
| Jul | 3.5" | 8.2" | 0" | ✅ Rainfall sufficient |
| Aug | 3.5" | 6.5" | 0" | ✅ Rainfall sufficient |
| Sep | 3.5" | 6" | 0" | ✅ Rainfall sufficient |
| Oct | 3.5" | 4.3" | 0" | ✅ Rainfall sufficient |
| Nov | 3.5" | 2.3" | 1.2" | 💧 Light watering |
| Dec | 3.5" | 1.7" | 1.8" | 🚿 Regular watering |
Water needs are for active growing months only (Feb–Dec in Kleberg County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Collard Greens Heat Requirements (GDD)
What are Growing Degree Days (GDD)?
Growing Degree Days measure the total warmth your plants receive during the growing season. Think of it as a "heat bank" — every day above 50°F deposits warmth that helps your plants grow.
Each plant needs a certain amount of accumulated heat to mature. If your county provides more GDD than the plant needs, it's a great fit. If it's close, you may want to choose faster-maturing varieties or start seeds indoors to get a head start.
Collard Greens Planting Timeline — Kleberg County, TX
Collard Greens Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | January 16 | Jan 16 – Jan 30 |
| Transplant Outdoors | February 13 | Feb 13 – Feb 27 |
| Direct Sow | January 23 | Jan 23 – Feb 13 |
| Harvest | April 10 | Apr 10 – Jun 12 |
| Fall Sowing | October 14 | Oct 14 – Oct 28 |
Plant 1" deep · 15" apart · Rows 24" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | Start Indoors Direct Sow |
| February | Transplant Outdoors Direct Sow |
| March | — |
| April | Harvest |
| May | Harvest |
| June | Harvest |
| July | — |
| August | — |
| September | — |
| October | Fall Sowing |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
0.8"/week · Natural rainfall sufficient
📅 Days to Maturity
55–75 days
🧪 Soil pH
Needs 6–7 · Your soil: too_alkaline
🗺️ USDA Zone
Zone 9b
📆 Growing Season
299 days in Kleberg County
Growing Tips for Collard Greens in Kleberg County
Direct sow Collard Greens outdoors after February 13 in Kleberg County when soil has warmed and frost danger has passed.
With summer highs reaching 102°F in Kleberg County, provide afternoon shade for Collard Greens and water deeply in the morning.
Common pests for Collard Greens in this region include cabbage worm and flea beetles. Use row covers early in the season and inspect plants weekly.
General growing tips
Start seeds indoors or direct sow 4-6 weeks before last frost. Harvest lower leaves first, leaving the growing tip intact. Flavor improves after exposure to frost.
Companion Planting
Good Companions
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Collard Greens in Other Locations
Frequently Asked Questions
When should I plant Collard Greens in Kleberg County, TX?
Kleberg County is in Zone 9b with an average last frost of February 13. Plan your Collard Greens planting based on this frost date — see the calendar above for exact timing.
What planting zone is Kleberg County, TX?
Kleberg County, Texas is in USDA Hardiness Zone 9b. The average last spring frost is February 13 and first fall frost is December 9.
Your Kleberg County Garden Planner — Free
A 24-page printable planner built for Kleberg County (Zone 9b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.