When to plant Tarragon in Boyd County, KY
Plant Tarragon in Boyd County during the brief April 27–May 11 window. With 186 frost-free days, fall plantings can't mature before October 23.
When to Plant Tarragon in Boyd County, KY
July in Boyd County, Kentucky — your action list
Your garden in Boyd County, Kentucky is working on a schedule, even when you're not. Here's where you should be this July.
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Harvest tarragon as they ripen
Check every 1–2 days. Many of these get tough or go to seed if you wait too long.
Looking ahead to August
- 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.
Boyd County, Kentucky is in USDA Zone 7a. The average last spring frost is April 20 and the first fall frost is October 23, giving you a growing season of approximately 186 days.
At an elevation of 2,124 feet, Boyd County receives approximately 46.2 inches of rainfall annually with predominantly silt loam soil. Summer highs average 91°F, providing good warmth for Tarragon during the growing season.
Boyd County Soil Profile
Soil Type
Silt Loam
Soil pH
5.3-6.5
Drainage
Well Drained
Tarragon 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 Boyd 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 Boyd County is excellent for Tarragon — good drainage, moisture retention, and nutrient holding capacity.
Drainage
Drainage is adequate for Tarragon.
Organic Matter
Organic matter is moderate (2.5%). Annual compost additions will help Tarragon.
How to Plant Tarragon
Succession Planting Tarragon
Sow every 6.9 weeks. Last sowing by Jul 25 to harvest before frost.
Tarragon 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 | — | 3.4" | 0" | ❄️ Dormant |
| Feb | — | 3.6" | 0" | ❄️ Dormant |
| Mar | — | 4.6" | 0" | ❄️ Dormant |
| Apr | 1.7" | 3.9" | 0" | ✅ Rainfall sufficient |
| May | 1.7" | 3.5" | 0" | ✅ Rainfall sufficient |
| Jun | 1.7" | 3.8" | 0" | ✅ Rainfall sufficient |
| Jul | 1.7" | 4.6" | 0" | ✅ Rainfall sufficient |
| Aug | 1.7" | 4.5" | 0" | ✅ Rainfall sufficient |
| Sep | 1.7" | 3.8" | 0" | ✅ Rainfall sufficient |
| Oct | 1.7" | 3.4" | 0" | ✅ Rainfall sufficient |
| Nov | — | 3.3" | 0" | ❄️ Dormant |
| Dec | — | 3.8" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Apr–Oct in Boyd 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 — Boyd County, KY
Tarragon Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Transplant Outdoors | April 27 | Apr 27 – May 11 |
| Harvest | June 29 | Jun 29 – Sep 7 |
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
186 days in Boyd County
Growing Tips for Tarragon in Boyd County
Direct sow Tarragon outdoors after April 20 in Boyd 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 Boyd County, KY?
Boyd County is in Zone 7a with an average last frost of April 20. Plan your Tarragon planting based on this frost date — see the calendar above for exact timing.
What planting zone is Boyd County, KY?
Boyd County, Kentucky is in USDA Hardiness Zone 7a. The average last spring frost is April 20 and first fall frost is October 23.
When should I plant Tarragon in Boyd County, KY?
In Boyd County, KY, plant Tarragon after the last frost (around April 20) and before the first frost (around October 23). Best results when soil holds above 50°F.
What growing zone is Boyd County, KY for Tarragon?
Boyd County sits in USDA Zone 7a. Tarragon grows reliably in zones 4a through 9b, so it's a good fit here.
Can Tarragon grow in Boyd County's climate?
Yes — Tarragon grows well in Boyd County's temperate climate. Boyd County averages a 186-day frost-free season, with last frost around April 20 and first frost around October 23.
Your Boyd County Garden Planner — Free
A 22-page printable planner built for Boyd 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.