When to Plant Kohlrabi in Letcher County, KY
Kohlrabi is an unusual brassica that forms a swollen stem above ground with a mild, sweet turnip-like flavor. Both the bulb and tender leaves are edible.
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 Kohlrabi during the growing season. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Kohlrabi 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
Kohlrabi Planting Timeline — Letcher County, KY
Kohlrabi Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | March 9 | Mar 9 – Mar 23 |
| Transplant Outdoors | April 13 | Apr 13 – Apr 27 |
| Direct Sow | March 30 | Mar 30 – Apr 20 |
| Fall Sowing | August 13 | Aug 13 – Aug 27 |
| Harvest | June 1 | Jun 1 – Jul 6 |
Plant 0.5" deep · 4" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | Start Indoors Direct Sow |
| April | Transplant Outdoors Direct Sow |
| May | — |
| June | Harvest |
| July | Harvest |
| August | Fall Sowing |
| September | — |
| October | — |
| November | — |
| December | — |
Growing Conditions
Sun
Full Sun (6-8+ hours)
Water
Moderate — regular watering
Days to Maturity
45–65 days
Soil pH
6 – 7.5
USDA Zone
Zone 6b
Growing Season
192 days
Growing Tips for Letcher County
Direct sow in spring or fall. Harvest when bulbs are 2-3 inches in diameter for best texture and flavor. Larger bulbs may become woody and fibrous.
Companion Planting
Good Companions
Avoid Planting Near
Level Up Your Garden
Kohlrabi in Other Locations
Frequently Asked Questions
When should I plant Kohlrabi in Letcher County, KY?
Letcher County is in Zone 6b with an average last frost of April 13. Plan your Kohlrabi 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
Get our free Garden Planner — designed to help Letcher County gardeners in Zone 6b organize planting dates, track what's growing, and never miss a planting window.
Get Your Free Garden Planner →Free download. Plan your entire garden season in minutes.