When to Plant Eggplant in Bexar County, TX
Eggplant is a heat-loving solanaceous crop that produces glossy fruits in purple, white, or striped varieties. It requires long, warm growing seasons for best production.
Bexar County, Texas is in USDA Zone 8b. The average last spring frost is March 11 and the first fall frost is November 17, giving you a growing season of approximately 251 days.
At an elevation of 3,197 feet, Bexar County receives approximately 52.1 inches of rainfall annually with predominantly loam soil. Summer highs average 93°F, providing good warmth for Eggplant during the growing season. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Eggplant root diseases.
Bexar County Soil Profile
Soil Type
Loam
Soil pH
6.5-7.8
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 Bexar County
How your county's soil matches Eggplant's growing requirements.
Soil pH
Your soil pH (6.5–7.8) is more alkaline than Eggplant prefers (5.5–7.0). Add sulfur or peat moss to lower pH.
Soil Texture
The loam soil in Bexar County is excellent for Eggplant — good drainage, moisture retention, and nutrient holding capacity.
Organic Matter
Organic matter is moderate (2.2%). Annual compost additions will help Eggplant.
How to Plant Eggplant
Succession Planting Eggplant
Sow every 7.4 weeks. Last sowing by Aug 24 to harvest before frost.
Plant Water Budget
Monthly Watering Guide for Eggplant
Eggplant needs approximately 1.1 inches of water per week (4.8" per month). Here's how your county's rainfall compares month by month.
| Month | Eggplant Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 1.4" | 0" | ❄️ Dormant |
| Feb | — | 1.7" | 0" | ❄️ Dormant |
| Mar | 4.8" | 3.6" | 1.2" | 💧 Light watering |
| Apr | 4.8" | 5.6" | 0" | ✅ Rainfall sufficient |
| May | 4.8" | 7.5" | 0" | ✅ Rainfall sufficient |
| Jun | 4.8" | 8.2" | 0" | ✅ Rainfall sufficient |
| Jul | 4.8" | 6.3" | 0" | ✅ Rainfall sufficient |
| Aug | 4.8" | 6.3" | 0" | ✅ Rainfall sufficient |
| Sep | 4.8" | 4.9" | 0" | ✅ Rainfall sufficient |
| Oct | 4.8" | 3.5" | 1.3" | 💧 Light watering |
| Nov | 4.8" | 1.9" | 2.9" | 🚿 Regular watering |
| Dec | — | 1.3" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Mar–Nov in Bexar County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Eggplant 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.
Eggplant Planting Timeline — Bexar County, TX
Eggplant Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | January 7 | Jan 7 – Jan 21 |
| Transplant Outdoors | March 25 | Mar 25 – Apr 8 |
| Direct Sow | March 18 | Mar 18 – Apr 8 |
| Harvest | June 3 | Jun 3 – Aug 5 |
Plant 1" deep · 30" apart · Rows 42" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | Start Indoors |
| February | — |
| March | Transplant Outdoors Direct Sow |
| April | Transplant Outdoors Direct Sow |
| May | — |
| June | Harvest |
| July | Harvest |
| August | Harvest |
| September | — |
| October | — |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
1.1"/week · Only during dry spells
📅 Days to Maturity
65–85 days
🧪 Soil pH
Needs 5.5–7 · Your soil: too_alkaline
🗺️ USDA Zone
Zone 8b
📆 Growing Season
251 days in Bexar County
Growing Tips for Eggplant in Bexar County
Direct sow Eggplant outdoors after March 11 in Bexar County when soil has warmed and frost danger has passed.
Common pests for Eggplant in this region include tomato hornworm and aphids. Use row covers early in the season and inspect plants weekly.
General growing tips
Start seeds indoors 8-10 weeks before last frost. Transplant only after nighttime temperatures stay above 55F. Mulch to retain moisture and warmth around roots.
Companion Planting
Good Companions
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Check more plant combinations with our Companion Planting Checker →
Eggplant in Other Locations
Frequently Asked Questions
When should I plant Eggplant in Bexar County, TX?
Bexar County is in Zone 8b with an average last frost of March 11. Plan your Eggplant planting based on this frost date — see the calendar above for exact timing.
What planting zone is Bexar County, TX?
Bexar County, Texas is in USDA Hardiness Zone 8b. The average last spring frost is March 11 and first fall frost is November 17.
Plan Your Garden with Confidence
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