When to Plant Thyme in Jackson County, TX
Thyme is a low-growing perennial herb with tiny, aromatic leaves and a warm, earthy flavor. It is one of the most versatile culinary and medicinal herbs.
Jackson County, Texas is in USDA Zone 9a. The average last spring frost is February 21 and the first fall frost is December 5, giving you a growing season of approximately 287 days.
At an elevation of 286 feet, Jackson County receives approximately 64.3 inches of rainfall annually with predominantly loam soil. Summer highs average 103°F, so Thyme may need afternoon shade and extra watering during peak heat. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Thyme root diseases.
Jackson County Soil Profile
Soil Type
Loam
Soil pH
6.5-7.2
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 Jackson County
How your county's soil matches Thyme's growing requirements.
Soil pH
Your soil pH (6.5–7.2) is within Thyme's preferred range (6.0–8.0).
Soil Texture
The loam soil in Jackson County is excellent for Thyme — good drainage, moisture retention, and nutrient holding capacity.
Drainage
Drainage is adequate for Thyme.
Organic Matter
Organic matter is moderate (2.0%). Annual compost additions will help Thyme.
How to Plant Thyme
Succession Planting Thyme
Sow every 8 weeks. Last sowing by Sep 06 to harvest before frost.
Plant Water Budget
Monthly Watering Guide for Thyme
Thyme 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 | Thyme Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 1.7" | 0" | ❄️ Dormant |
| Feb | 1.3" | 2.1" | 0" | ✅ Rainfall sufficient |
| Mar | 1.3" | 3.9" | 0" | ✅ Rainfall sufficient |
| Apr | 1.3" | 6.5" | 0" | ✅ Rainfall sufficient |
| May | 1.3" | 9" | 0" | ✅ Rainfall sufficient |
| Jun | 1.3" | 10.4" | 0" | ✅ Rainfall sufficient |
| Jul | 1.3" | 7.9" | 0" | ✅ Rainfall sufficient |
| Aug | 1.3" | 8" | 0" | ✅ Rainfall sufficient |
| Sep | 1.3" | 6" | 0" | ✅ Rainfall sufficient |
| Oct | 1.3" | 4.8" | 0" | ✅ Rainfall sufficient |
| Nov | 1.3" | 2.3" | 0" | ✅ Rainfall sufficient |
| Dec | 1.3" | 1.7" | 0" | ✅ Rainfall sufficient |
Water needs are for active growing months only (Feb–Dec in Jackson County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Thyme 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.
Thyme Planting Timeline — Jackson County, TX
Thyme Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Transplant Outdoors | February 28 | Feb 28 – Mar 14 |
| Harvest | May 9 | May 9 – Jul 11 |
Plant 0.5" deep · 8" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | Transplant Outdoors |
| March | Transplant Outdoors |
| April | — |
| May | Harvest |
| June | Harvest |
| July | Harvest |
| August | — |
| September | — |
| October | — |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
0.3"/week · Natural rainfall sufficient
📅 Days to Maturity
70–90 days
🧪 Soil pH
Needs 6–8 · Your soil: ideal
🗺️ USDA Zone
Zone 9a
📆 Growing Season
287 days in Jackson County
Growing Tips for Thyme in Jackson County
Direct sow Thyme outdoors after February 21 in Jackson County when soil has warmed and frost danger has passed.
With summer highs reaching 103°F in Jackson County, provide afternoon shade for Thyme and water deeply in the morning.
With 64" of annual rainfall in Jackson County, ensure good drainage for Thyme — excess moisture can promote root rot and fungal diseases.
General growing tips
Start from seed, cuttings, or divisions. Plant in well-drained, lean soil. Prune lightly after flowering. Replace plants every 3-4 years when they become woody.
Companion Planting
Good Companions
Check more plant combinations with our Companion Planting Checker →
Thyme in Other Locations
Frequently Asked Questions
When should I plant Thyme in Jackson County, TX?
Jackson County is in Zone 9a with an average last frost of February 21. Plan your Thyme planting based on this frost date — see the calendar above for exact timing.
What planting zone is Jackson County, TX?
Jackson County, Texas is in USDA Hardiness Zone 9a. The average last spring frost is February 21 and first fall frost is December 5.
Plan Your Garden with Confidence
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