When to plant Arugula in Metcalfe County, KY
Plant Arugula in Metcalfe County after April 9; the prime window is March 26–April 16. A second sowing from August 19 to September 2 extends the harvest into fall.
When to Plant Arugula in Metcalfe County, KY
This month in Metcalfe County, Kentucky
Welcome to July in Zone 7a. These are the moves that will have the biggest impact on your growing season.
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Pick arugula
Don't tug. Use scissors or pruners for clean cuts — torn stems invite disease.
A few tasks this July that'll pay off in August
- Fall sowing: arugula
Arugula is a fast-growing cool-season green with a peppery, nutty flavor. It is excellent in salads and can be harvested as baby greens or mature leaves.
Metcalfe County, Kentucky is in USDA Zone 7a. The average last spring frost is April 9 and the first fall frost is October 28, giving you a growing season of approximately 202 days.
At an elevation of 2,244 feet, Metcalfe County receives approximately 54.7 inches of rainfall annually with predominantly silt loam soil. Summer highs average 88°F, providing good warmth for Arugula during the growing season. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Arugula root diseases.
Metcalfe County Soil Profile
Soil Type
Silt Loam
Soil pH
5.3-6.9
Drainage
Well Drained
Arugula 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 Metcalfe County
How your county's soil matches Arugula's growing requirements.
Soil pH
Your soil pH (5.3–6.9) overlaps with Arugula's range (6.0–7.0), though not a perfect match.
Soil Texture
The silt loam soil in Metcalfe County is excellent for Arugula — good drainage, moisture retention, and nutrient holding capacity.
Organic Matter
Organic matter is moderate (2.6%). Annual compost additions will help Arugula.
How to Plant Arugula
Fall planting: Sow 10 weeks before your first frost date for a fall harvest.
Succession Planting Arugula
Sow every 3.4 weeks. Last sowing by Sep 08 to harvest before frost.
For a dedicated fall crop, sow by Aug 19.
Arugula Water Budget
Monthly Watering Guide for Arugula
Arugula needs approximately 0.6 inches of water per week (2.6" per month). Here's how your county's rainfall compares month by month.
| Month | Arugula Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 4.2" | 0" | ❄️ Dormant |
| Feb | — | 3.7" | 0" | ❄️ Dormant |
| Mar | — | 5.3" | 0" | ❄️ Dormant |
| Apr | 2.6" | 4.5" | 0" | ✅ Rainfall sufficient |
| May | 2.6" | 5" | 0" | ✅ Rainfall sufficient |
| Jun | 2.6" | 4.5" | 0" | ✅ Rainfall sufficient |
| Jul | 2.6" | 6.4" | 0" | ✅ Rainfall sufficient |
| Aug | 2.6" | 5" | 0" | ✅ Rainfall sufficient |
| Sep | 2.6" | 4.4" | 0" | ✅ Rainfall sufficient |
| Oct | 2.6" | 3.2" | 0" | ✅ Rainfall sufficient |
| Nov | — | 4.3" | 0" | ❄️ Dormant |
| Dec | — | 4.2" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Apr–Oct in Metcalfe County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Arugula 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.
Arugula Planting Timeline — Metcalfe County, KY
Arugula Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | March 5 | Mar 5 – Mar 19 |
| Transplant Outdoors | April 9 | Apr 9 – Apr 23 |
| Direct Sow | March 26 | Mar 26 – Apr 16 |
| Harvest | May 14 | May 14 – Jul 16 |
| Fall Sowing | August 19 | Aug 19 – Sep 2 |
Plant 0.5" deep · 6" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | Start Indoors Direct Sow |
| April | Transplant Outdoors Direct Sow |
| May | Harvest |
| June | Harvest |
| July | Harvest |
| August | Fall Sowing |
| September | Fall Sowing |
| October | — |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Partial Shade (3-6 hours)
💧 Water
0.6"/week · Natural rainfall sufficient
📅 Days to Maturity
30–50 days
🧪 Soil pH
Needs 6–7 · Your soil: acceptable
🗺️ USDA Zone
Zone 7a
📆 Growing Season
202 days in Metcalfe County
Growing Tips for Arugula in Metcalfe County
Direct sow Arugula outdoors after April 09 in Metcalfe County when soil has warmed and frost danger has passed.
Your generous 202.0-day season in Metcalfe County allows multiple plantings of Arugula. Sow every 15.0 days for continuous harvest.
Common pests for Arugula in this region include cabbage worm and flea beetles. Use row covers early in the season and inspect plants weekly.
General growing tips
Sow seeds directly every 2-3 weeks for continuous harvest. Provide afternoon shade in warm weather to prevent bolting. Harvest outer leaves first to extend production.
Companion Planting
Good Companions
Avoid Planting Near
Check more plant combinations with our Companion Planting Checker →
Arugula in Other Locations
Frequently Asked Questions
When should I plant Arugula in Metcalfe County, KY?
Metcalfe County is in Zone 7a with an average last frost of April 9. Plan your Arugula planting based on this frost date — see the calendar above for exact timing.
What planting zone is Metcalfe County, KY?
Metcalfe County, Kentucky is in USDA Hardiness Zone 7a. The average last spring frost is April 9 and first fall frost is October 28.
When should I plant Arugula in Metcalfe County, KY?
In Metcalfe County, KY, plant Arugula after the last frost (around April 9) and before the first frost (around October 28). Best results when soil holds above 50°F.
What growing zone is Metcalfe County, KY for Arugula?
Metcalfe County sits in USDA Zone 7a. Arugula grows reliably in zones 3a through 11b, so it's a good fit here.
Can Arugula grow in Metcalfe County's climate?
Yes — Arugula grows well in Metcalfe County's temperate climate. Metcalfe County averages a 202-day frost-free season, with last frost around April 9 and first frost around October 28.
Your Metcalfe County Garden Planner — Free
A 22-page printable planner built for Metcalfe 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.