When to Plant Marjoram in Adair County, KY
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.
Adair County, Kentucky is in USDA Zone 6b. The average last spring frost is April 17 and the first fall frost is October 21, giving you a growing season of approximately 187 days.
At an elevation of 2,442 feet, Adair County receives approximately 42.3 inches of rainfall annually with predominantly silt loam soil. Summer highs average 89°F, providing good warmth for Marjoram during the growing season.
Adair County Soil Profile
Soil Type
Silt Loam
Soil pH
5.7-7.1
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.
Plant Water Budget
Marjoram Planting Timeline — Adair County, KY
Marjoram Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Transplant Outdoors | April 24 | Apr 24 – May 8 |
| Harvest | June 26 | Jun 26 – Sep 4 |
Plant 0.5" deep · 8" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | — |
| April | Transplant Outdoors |
| May | Transplant Outdoors |
| June | Harvest |
| July | Harvest |
| August | Harvest |
| September | Harvest |
| October | — |
| November | — |
| December | — |
Growing Conditions
Sun
Full Sun (6-8+ hours)
Water
Moderate — regular watering
Days to Maturity
60–90 days
Soil pH
6.5 – 7.5
USDA Zone
Zone 6b
Growing Season
187 days
Growing Tips for Adair County
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
Level Up Your Garden
Marjoram in Other Locations
Frequently Asked Questions
When should I plant Marjoram in Adair County, KY?
Adair County is in Zone 6b with an average last frost of April 17. Plan your Marjoram planting based on this frost date — see the calendar above for exact timing.
What planting zone is Adair County, KY?
Adair County, Kentucky is in USDA Hardiness Zone 6b. The average last spring frost is April 17 and first fall frost is October 21.
Plan Your Garden with Confidence
Get our free Garden Planner — designed to help Adair County gardeners in Zone 6b organize planting dates, track what's growing, and never miss a planting window.
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