When to Plant Tarragon in Jessamine County, KY
May in the garden — Jessamine County, Kentucky
Welcome to May in Zone 7a. These are the moves that will have the biggest impact on your growing season.
Get ahead of June
- First harvests: tarragon
French tarragon is a perennial herb with slender leaves and a distinctive anise-like flavor essential in French cooking. It does not produce viable seed and must be propagated vegetatively.
Jessamine County, Kentucky is in USDA Zone 7a. The average last spring frost is April 15 and the first fall frost is October 24, giving you a growing season of approximately 192 days.
At an elevation of 1,644 feet, Jessamine County receives approximately 51.4 inches of rainfall annually with predominantly silt loam soil. Summer highs average 87°F, providing good warmth for Tarragon during the growing season. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Tarragon root diseases.
Jessamine County Soil Profile
Soil Type
Silt Loam
Soil pH
5.3-6.5
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.
Soil Compatibility in Jessamine County
How your county's soil matches Tarragon's growing requirements.
Soil pH
Your soil pH (5.3–6.5) is more acidic than Tarragon prefers (6.0–7.5). Add garden lime to raise pH.
Soil Texture
The silt loam soil in Jessamine County is excellent for Tarragon — good drainage, moisture retention, and nutrient holding capacity.
Organic Matter
Organic matter is moderate (2.6%). Annual compost additions will help Tarragon.
How to Plant Tarragon
Succession Planting Tarragon
Sow every 6.9 weeks. Last sowing by Jul 26 to harvest before frost.
Plant Water Budget
Monthly Watering Guide for Tarragon
Tarragon needs approximately 0.4 inches of water per week (1.7" per month). Here's how your county's rainfall compares month by month.
| Month | Tarragon Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 4" | 0" | ❄️ Dormant |
| Feb | — | 3.8" | 0" | ❄️ Dormant |
| Mar | — | 4.4" | 0" | ❄️ Dormant |
| Apr | 1.7" | 3.8" | 0" | ✅ Rainfall sufficient |
| May | 1.7" | 4.4" | 0" | ✅ Rainfall sufficient |
| Jun | 1.7" | 4.2" | 0" | ✅ Rainfall sufficient |
| Jul | 1.7" | 6" | 0" | ✅ Rainfall sufficient |
| Aug | 1.7" | 4.9" | 0" | ✅ Rainfall sufficient |
| Sep | 1.7" | 3.9" | 0" | ✅ Rainfall sufficient |
| Oct | 1.7" | 3.7" | 0" | ✅ Rainfall sufficient |
| Nov | — | 4.2" | 0" | ❄️ Dormant |
| Dec | — | 4.1" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Apr–Oct in Jessamine County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Tarragon 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.
Tarragon Planting Timeline — Jessamine County, KY
Tarragon Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Transplant Outdoors | April 22 | Apr 22 – May 6 |
| Harvest | June 24 | Jun 24 – Sep 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 | Harvest |
| July | Harvest |
| August | Harvest |
| September | Harvest |
| October | — |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
0.4"/week · Natural rainfall sufficient
📅 Days to Maturity
60–90 days
🧪 Soil pH
Needs 6–7.5 · Your soil: too_acidic
🗺️ USDA Zone
Zone 7a
📆 Growing Season
192 days in Jessamine County
Growing Tips for Tarragon in Jessamine County
Direct sow Tarragon outdoors after April 15 in Jessamine County when soil has warmed and frost danger has passed.
Common pests for Tarragon in this region include aphids and slugs. Use row covers early in the season and inspect plants weekly.
General growing tips
Purchase plants or divisions as French tarragon does not grow true from seed. Plant in well-drained soil. Divide every 3-4 years to maintain vigor. Harvest tips regularly for best flavor.
Companion Planting
Good Companions
Check more plant combinations with our Companion Planting Checker →
Tarragon in Other Locations
Frequently Asked Questions
When should I plant Tarragon in Jessamine County, KY?
Jessamine County is in Zone 7a with an average last frost of April 15. Plan your Tarragon planting based on this frost date — see the calendar above for exact timing.
What planting zone is Jessamine County, KY?
Jessamine County, Kentucky is in USDA Hardiness Zone 7a. The average last spring frost is April 15 and first fall frost is October 24.
Your Jessamine County Garden Planner — Free
A 24-page printable planner built for Jessamine County (Zone 7a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.