When to Plant Oregano in Hidalgo County, TX
Oregano is a robust perennial herb essential to Italian and Greek cuisine. Its pungent, savory leaves intensify in flavor when dried.
Hidalgo County, Texas is in USDA Zone 9b. The average last spring frost is February 6 and the first fall frost is December 18, giving you a growing season of approximately 315 days.
At an elevation of 4,081 feet, Hidalgo County receives approximately 67 inches of rainfall annually with predominantly loam soil. Summer highs average 100°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.
Hidalgo 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 Hidalgo County
How your county's soil matches Oregano's growing requirements.
Soil pH
Your soil pH (6.2–7.8) is within Oregano's preferred range (6.0–8.0).
Soil Texture
The loam soil in Hidalgo County is excellent for Oregano — good drainage, moisture retention, and nutrient holding capacity.
Organic Matter
Organic matter is moderate (2.3%). Annual compost additions will help Oregano.
How to Plant Oregano
Succession Planting Oregano
Sow every 6.9 weeks. Last sowing by Sep 19 to harvest before frost.
Plant Water Budget
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 | — | 1.4" | 0" | ❄️ Dormant |
| Feb | 1.3" | 2.1" | 0" | ✅ Rainfall sufficient |
| Mar | 1.3" | 3.6" | 0" | ✅ Rainfall sufficient |
| Apr | 1.3" | 6.7" | 0" | ✅ Rainfall sufficient |
| May | 1.3" | 10.1" | 0" | ✅ Rainfall sufficient |
| Jun | 1.3" | 9.4" | 0" | ✅ Rainfall sufficient |
| Jul | 1.3" | 9.3" | 0" | ✅ Rainfall sufficient |
| Aug | 1.3" | 8.7" | 0" | ✅ Rainfall sufficient |
| Sep | 1.3" | 6.9" | 0" | ✅ Rainfall sufficient |
| Oct | 1.3" | 4.5" | 0" | ✅ Rainfall sufficient |
| Nov | 1.3" | 2.5" | 0" | ✅ Rainfall sufficient |
| Dec | 1.3" | 1.8" | 0" | ✅ Rainfall sufficient |
Water needs are for active growing months only (Feb–Dec in Hidalgo 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 — Hidalgo County, TX
Oregano Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Transplant Outdoors | February 13 | Feb 13 – Feb 27 |
| Harvest | April 17 | Apr 17 – Jun 26 |
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
315 days in Hidalgo County
Growing Tips for Oregano in Hidalgo County
Direct sow Oregano outdoors after February 06 in Hidalgo County when soil has warmed and frost danger has passed.
With summer highs reaching 100°F in Hidalgo County, provide afternoon shade for Oregano and water deeply in the morning.
With 67" of annual rainfall in Hidalgo 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 Hidalgo County, TX?
Hidalgo County is in Zone 9b with an average last frost of February 6. Plan your Oregano planting based on this frost date — see the calendar above for exact timing.
What planting zone is Hidalgo County, TX?
Hidalgo County, Texas is in USDA Hardiness Zone 9b. The average last spring frost is February 6 and first fall frost is December 18.
Plan Your Garden with Confidence
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