When to Plant Oregano in Starr County, TX
What to do in May
A quick May briefing for Starr County, Texas gardeners — what's urgent, what's next, and what can wait.
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Collect oregano at their peak
If you can't use it all right away, check the food-preservation section of your planner.
Before June arrives, get these ready
- First harvests: oregano
Oregano is a robust perennial herb essential to Italian and Greek cuisine. Its pungent, savory leaves intensify in flavor when dried.
Starr County, Texas is in USDA Zone 9b. The average last spring frost is February 3 and the first fall frost is December 16, giving you a growing season of approximately 316 days.
At an elevation of 2,451 feet, Starr County receives approximately 55.4 inches of rainfall annually with predominantly loam soil. Summer highs average 98°F, so Oregano may need afternoon shade and extra watering during peak heat. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Oregano root diseases.
Starr County Soil Profile
Soil Type
Loam
Soil pH
6.8-7.5
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 Starr County
How your county's soil matches Oregano's growing requirements.
Soil pH
Your soil pH (6.8–7.5) is within Oregano's preferred range (6.0–8.0).
Soil Texture
The loam soil in Starr County is excellent for Oregano — good drainage, moisture retention, and nutrient holding capacity.
Organic Matter
Organic matter is moderate (2.1%). Annual compost additions will help Oregano.
How to Plant Oregano
Succession Planting Oregano
Sow every 6.9 weeks. Last sowing by Sep 17 to harvest before frost.
Plant Water Budget
Water stress score is 6/10 — consider drought-tolerant varieties and mulching
Monthly Watering Guide for Oregano
Oregano needs approximately 0.3 inches of water per week (1.3" per month). Here's how your county's rainfall compares month by month.
| Month | Oregano Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 1.6" | 0" | ❄️ Dormant |
| Feb | 1.3" | 1.9" | 0" | ✅ Rainfall sufficient |
| Mar | 1.3" | 3.4" | 0" | ✅ Rainfall sufficient |
| Apr | 1.3" | 6.6" | 0" | ✅ Rainfall sufficient |
| May | 1.3" | 8.8" | 0" | ✅ Rainfall sufficient |
| Jun | 1.3" | 7.6" | 0" | ✅ Rainfall sufficient |
| Jul | 1.3" | 7" | 0" | ✅ Rainfall sufficient |
| Aug | 1.3" | 6.4" | 0" | ✅ Rainfall sufficient |
| Sep | 1.3" | 4.9" | 0" | ✅ Rainfall sufficient |
| Oct | 1.3" | 4" | 0" | ✅ Rainfall sufficient |
| Nov | 1.3" | 1.6" | 0" | ✅ Rainfall sufficient |
| Dec | 1.3" | 1.6" | 0" | ✅ Rainfall sufficient |
Water needs are for active growing months only (Feb–Dec in Starr County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Oregano 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.
Oregano Planting Timeline — Starr County, TX
Oregano Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Transplant Outdoors | February 10 | Feb 10 – Feb 24 |
| Harvest | April 14 | Apr 14 – Jun 23 |
Plant 0.5" deep · 8" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | Transplant Outdoors |
| March | — |
| April | Harvest |
| May | Harvest |
| June | Harvest |
| July | — |
| August | — |
| September | — |
| October | — |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
0.3"/week · Natural rainfall sufficient
📅 Days to Maturity
60–90 days
🧪 Soil pH
Needs 6–8 · Your soil: ideal
🗺️ USDA Zone
Zone 9b
📆 Growing Season
316 days in Starr County
Growing Tips for Oregano in Starr County
Direct sow Oregano outdoors after February 03 in Starr County when soil has warmed and frost danger has passed.
With summer highs reaching 98°F in Starr County, provide afternoon shade for Oregano and water deeply in the morning.
With 55" of annual rainfall in Starr County, ensure good drainage for Oregano — excess moisture can promote root rot and fungal diseases.
General growing tips
Start from seed, cuttings, or divisions. Harvest just before flowering for strongest flavor. Cut plants back to a few inches in spring to encourage vigorous new growth.
Companion Planting
Good Companions
Check more plant combinations with our Companion Planting Checker →
Oregano in Other Locations
Frequently Asked Questions
When should I plant Oregano in Starr County, TX?
Starr County is in Zone 9b with an average last frost of February 3. Plan your Oregano planting based on this frost date — see the calendar above for exact timing.
What planting zone is Starr County, TX?
Starr County, Texas is in USDA Hardiness Zone 9b. The average last spring frost is February 3 and first fall frost is December 16.
Your Starr County Garden Planner — Free
A 24-page printable planner built for Starr 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.