When to Plant Mustard Greens in Calhoun County, TX
This month in Calhoun County, Texas
Your Calhoun County, Texas garden is entering a new phase. Here's what's on the schedule for May and why each task matters now.
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Harvest mustard greens as they ripen
This is the payoff month. Bring a basket, bring a friend, and get into the beds.
Mustard greens are fast-growing brassicas with a spicy, peppery kick. They come in green, red, and purple varieties and are excellent cooked or in salads.
Calhoun County, Texas is in USDA Zone 9b. The average last spring frost is February 16 and the first fall frost is December 7, giving you a growing season of approximately 294 days.
At an elevation of 215 feet, Calhoun County receives approximately 59.5 inches of rainfall annually with predominantly loam soil. Summer highs average 99°F, so Mustard Greens may need afternoon shade and extra watering during peak heat. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Mustard Greens root diseases.
Calhoun County Soil Profile
Soil Type
Loam
Soil pH
6.2-7.8
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 Calhoun County
How your county's soil matches Mustard Greens's growing requirements.
Soil pH
Your soil pH (6.2–7.8) overlaps with Mustard Greens's range (6.0–7.0), though not a perfect match.
Soil Texture
The loam soil in Calhoun County is excellent for Mustard Greens — good drainage, moisture retention, and nutrient holding capacity.
Organic Matter
Organic matter is moderate (2.2%). Annual compost additions will help Mustard Greens.
How to Plant Mustard Greens
Fall planting: Sow 8 weeks before your first frost date for a fall harvest.
Succession Planting Mustard Greens
Sow every 3.4 weeks. Last sowing by Oct 18 to harvest before frost.
For a dedicated fall crop, sow by Oct 12.
Plant Water Budget
Monthly Watering Guide for Mustard Greens
Mustard Greens needs approximately 0.7 inches of water per week (3" per month). Here's how your county's rainfall compares month by month.
| Month | Mustard Greens Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 1.4" | 0" | ❄️ Dormant |
| Feb | 3" | 2.2" | 0.8" | 💧 Light watering |
| Mar | 3" | 4.6" | 0" | ✅ Rainfall sufficient |
| Apr | 3" | 6.7" | 0" | ✅ Rainfall sufficient |
| May | 3" | 8.5" | 0" | ✅ Rainfall sufficient |
| Jun | 3" | 9.1" | 0" | ✅ Rainfall sufficient |
| Jul | 3" | 7.3" | 0" | ✅ Rainfall sufficient |
| Aug | 3" | 6.6" | 0" | ✅ Rainfall sufficient |
| Sep | 3" | 5.2" | 0" | ✅ Rainfall sufficient |
| Oct | 3" | 3.9" | 0" | ✅ Rainfall sufficient |
| Nov | 3" | 2.2" | 0.8" | 💧 Light watering |
| Dec | 3" | 1.9" | 1.1" | 💧 Light watering |
Water needs are for active growing months only (Feb–Dec in Calhoun County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Mustard 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.
Mustard Greens Planting Timeline — Calhoun County, TX
Mustard Greens Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | January 19 | Jan 19 – Feb 2 |
| Transplant Outdoors | February 16 | Feb 16 – Mar 2 |
| Direct Sow | January 26 | Jan 26 – Feb 16 |
| Harvest | March 23 | Mar 23 – May 25 |
| Fall Sowing | October 12 | Oct 12 – Oct 26 |
Plant 0.5" deep · 6" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | Start Indoors Direct Sow |
| February | Start Indoors Transplant Outdoors Direct Sow |
| March | Transplant Outdoors Harvest |
| April | Harvest |
| May | Harvest |
| June | — |
| July | — |
| August | — |
| September | — |
| October | Fall Sowing |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Partial Shade (3-6 hours)
💧 Water
0.7"/week · Natural rainfall sufficient
📅 Days to Maturity
30–50 days
🧪 Soil pH
Needs 6–7 · Your soil: acceptable
🗺️ USDA Zone
Zone 9b
📆 Growing Season
294 days in Calhoun County
Growing Tips for Mustard Greens in Calhoun County
Direct sow Mustard Greens outdoors after February 16 in Calhoun County when soil has warmed and frost danger has passed.
With summer highs reaching 99°F in Calhoun County, provide afternoon shade for Mustard Greens and water deeply in the morning.
Your generous 295.0-day season in Calhoun County allows multiple plantings of Mustard Greens. Sow every 15.0 days for continuous harvest.
Common pests for Mustard Greens in this region include cabbage worm and flea beetles. Use row covers early in the season and inspect plants weekly.
General growing tips
Direct sow in early spring or fall. Harvest young leaves for milder flavor. Plants bolt quickly in heat so grow as a cool-season crop or provide shade.
Companion Planting
Good Companions
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Check more plant combinations with our Companion Planting Checker →
Mustard Greens in Other Locations
Frequently Asked Questions
When should I plant Mustard Greens in Calhoun County, TX?
Calhoun County is in Zone 9b with an average last frost of February 16. Plan your Mustard Greens planting based on this frost date — see the calendar above for exact timing.
What planting zone is Calhoun County, TX?
Calhoun County, Texas is in USDA Hardiness Zone 9b. The average last spring frost is February 16 and first fall frost is December 7.
Your Calhoun County Garden Planner — Free
A 24-page printable planner built for Calhoun 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.