When to Plant Valerian in Letcher County, KY
Valerian is a tall perennial herb with fragrant white or pink flower clusters, valued for its root which is used as a natural sleep aid. It attracts pollinators and earthworms.
Letcher County, Kentucky is in USDA Zone 6b. The average last spring frost is April 13 and the first fall frost is October 22, giving you a growing season of approximately 192 days.
At an elevation of 3,749 feet, Letcher County receives approximately 54.6 inches of rainfall annually with predominantly silt loam soil. Summer highs average 86°F, providing good warmth for Valerian during the growing season. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Valerian root diseases.
Letcher County Soil Profile
Soil Type
Silt Loam
Soil pH
5.5-6.5
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.
Plant Water Budget
Valerian Planting Timeline — Letcher County, KY
Valerian Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Transplant Outdoors | April 20 | Apr 20 – May 4 |
| Harvest | August 24 | Aug 24 – Nov 2 |
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 | — |
| July | — |
| August | Harvest |
| September | Harvest |
| October | Harvest |
| November | Harvest |
| December | — |
Growing Conditions
Sun
Partial Shade (3-6 hours)
Water
Moderate — regular watering
Days to Maturity
120–180 days
Soil pH
5.5 – 7
USDA Zone
Zone 6b
Growing Season
192 days
Growing Tips for Letcher County
Start seeds indoors and transplant after last frost. Harvest roots in fall of the second year. Deadhead flowers unless you want self-seeding. Cats are attracted to valerian root.
Companion Planting
Good Companions
Level Up Your Garden
Valerian in Other Locations
Frequently Asked Questions
When should I plant Valerian in Letcher County, KY?
Letcher County is in Zone 6b with an average last frost of April 13. Plan your Valerian planting based on this frost date — see the calendar above for exact timing.
What planting zone is Letcher County, KY?
Letcher County, Kentucky is in USDA Hardiness Zone 6b. The average last spring frost is April 13 and first fall frost is October 22.
Plan Your Garden with Confidence
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