When to Plant Marjoram in Jack County, TX
Sweet marjoram is a tender perennial herb with a delicate, sweet oregano-like flavor. It is a cornerstone of Mediterranean cooking and pairs well with meats and vegetables.
Jack County, Texas is in USDA Zone 7b. The average last spring frost is March 26 and the first fall frost is November 9, giving you a growing season of approximately 228 days.
At an elevation of 2,081 feet, Jack County receives approximately 66.9 inches of rainfall annually with predominantly clay soil. Summer highs average 89°F, providing good warmth for Marjoram during the growing season. Clay soil retains moisture well for Marjoram, but amend with compost to improve drainage and prevent root rot. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Marjoram root diseases.
Jack County Soil Profile
Soil Type
Clay
Soil pH
7.3-7.6
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 Jack County
How your county's soil matches Marjoram's growing requirements.
Soil pH
Your soil pH (7.3–7.6) overlaps with Marjoram's range (6.5–7.5), though not a perfect match.
Soil Texture
Heavy clay soil (42% clay) in Jack County compacts easily and drains slowly. Amend with compost and avoid working soil when wet.
Drainage
Drainage is adequate for Marjoram.
Organic Matter
Organic matter is moderate (3.2%). Annual compost additions will help Marjoram.
How to Plant Marjoram
Succession Planting Marjoram
Sow every 6.9 weeks. Last sowing by Aug 11 to harvest before frost.
Plant Water Budget
Monthly Watering Guide for Marjoram
Marjoram 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 | Marjoram Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 2" | 0" | ❄️ Dormant |
| Feb | — | 2.3" | 0" | ❄️ Dormant |
| Mar | 1.3" | 3.7" | 0" | ✅ Rainfall sufficient |
| Apr | 1.3" | 8" | 0" | ✅ Rainfall sufficient |
| May | 1.3" | 9.7" | 0" | ✅ Rainfall sufficient |
| Jun | 1.3" | 9.6" | 0" | ✅ Rainfall sufficient |
| Jul | 1.3" | 8.5" | 0" | ✅ Rainfall sufficient |
| Aug | 1.3" | 7.6" | 0" | ✅ Rainfall sufficient |
| Sep | 1.3" | 6.7" | 0" | ✅ Rainfall sufficient |
| Oct | 1.3" | 4.3" | 0" | ✅ Rainfall sufficient |
| Nov | 1.3" | 2.6" | 0" | ✅ Rainfall sufficient |
| Dec | — | 1.7" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Mar–Nov in Jack County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Marjoram 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.
Marjoram Planting Timeline — Jack County, TX
Marjoram Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Transplant Outdoors | April 2 | Apr 2 – Apr 16 |
| Harvest | June 4 | Jun 4 – Aug 13 |
Plant 0.5" deep · 8" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | — |
| April | Transplant Outdoors |
| May | — |
| June | Harvest |
| July | Harvest |
| August | Harvest |
| 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 6.5–7.5 · Your soil: acceptable
🗺️ USDA Zone
Zone 7b
📆 Growing Season
228 days in Jack County
Growing Tips for Marjoram in Jack County
Direct sow Marjoram outdoors after March 26 in Jack County when soil has warmed and frost danger has passed.
With Jack County's clay soil (42% clay), work in 3-4 inches of compost before planting Marjoram. Avoid tilling when soil is wet to prevent compaction.
With 67" of annual rainfall in Jack County, ensure good drainage for Marjoram — excess moisture can promote root rot and fungal diseases.
General growing tips
Start seeds indoors 6-8 weeks before last frost. Harvest stems just as flower buds appear for peak flavor. In cold climates, grow as an annual or bring containers indoors.
Companion Planting
Good Companions
Check more plant combinations with our Companion Planting Checker →
Marjoram in Other Locations
Frequently Asked Questions
When should I plant Marjoram in Jack County, TX?
Jack County is in Zone 7b with an average last frost of March 26. Plan your Marjoram planting based on this frost date — see the calendar above for exact timing.
What planting zone is Jack County, TX?
Jack County, Texas is in USDA Hardiness Zone 7b. The average last spring frost is March 26 and first fall frost is November 9.
Plan Your Garden with Confidence
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