When to plant Edamame in Knox County County,
In Knox County County, plant Edamame in spring between April 26 and May 17, once soil temps hold above 50°F. Knox County County's last frost averages April 19, so most warm-season crops establish quickly once soil holds above 60°F. For a fall crop, sow between and — roughly 100 days before the first frost on October 21.
When to Plant Edamame in Knox County, KY
June in the garden — Knox County, Kentucky
Here's what deserves your attention in Knox County, Kentucky this month. Everything below is tailored to Zone 7a and timed around your local frost dates.
July will be here before you know it — start on
- First harvests: edamame
Edamame are soybeans harvested at the immature green stage for a sweet, nutty snack. They are high in protein and easy to grow in warm climates.
Knox County, Kentucky is in USDA Zone 7a. The average last spring frost is April 19 and the first fall frost is October 21, giving you a growing season of approximately 185 days.
At an elevation of 2,802 feet, Knox County receives approximately 46.3 inches of rainfall annually with predominantly silt loam soil. Summer highs average 86°F, providing good warmth for Edamame during the growing season.
Knox County Soil Profile
Soil Type
Silt Loam
Soil pH
5.3-7
Drainage
Well Drained
Edamame 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 Knox County
How your county's soil matches Edamame's growing requirements.
Soil pH
Your soil pH (5.3–7.0) overlaps with Edamame's range (6.0–7.0), though not a perfect match.
Soil Texture
The silt loam soil in Knox County is excellent for Edamame — good drainage, moisture retention, and nutrient holding capacity.
Drainage
Drainage is adequate for Edamame.
Organic Matter
Organic matter is moderate (3.0%). Annual compost additions will help Edamame.
How to Plant Edamame
Succession Planting Edamame
Sow every 8.6 weeks. Last sowing by Jul 13 to harvest before frost.
Edamame Water Budget
Monthly Watering Guide for Edamame
Edamame needs approximately 0.9 inches of water per week (3.9" per month). Here's how your county's rainfall compares month by month.
| Month | Edamame Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 3.3" | 0" | ❄️ Dormant |
| Feb | — | 4" | 0" | ❄️ Dormant |
| Mar | — | 4.3" | 0" | ❄️ Dormant |
| Apr | 3.9" | 3.8" | 0.1" | 💧 Light watering |
| May | 3.9" | 3.2" | 0.7" | 💧 Light watering |
| Jun | 3.9" | 3.9" | 0" | ✅ Rainfall sufficient |
| Jul | 3.9" | 4.8" | 0" | ✅ Rainfall sufficient |
| Aug | 3.9" | 4.9" | 0" | ✅ Rainfall sufficient |
| Sep | 3.9" | 3.2" | 0.7" | 💧 Light watering |
| Oct | 3.9" | 3.1" | 0.8" | 💧 Light watering |
| Nov | — | 3.8" | 0" | ❄️ Dormant |
| Dec | — | 4" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Apr–Oct in Knox County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Edamame 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.
Edamame Planting Timeline — Knox County, KY
Edamame Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Direct Sow | April 26 | Apr 26 – May 17 |
| Harvest | July 12 | Jul 12 – Aug 23 |
Plant 1" deep · 15" apart · Rows 24" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | — |
| April | Direct Sow |
| May | Direct Sow |
| June | — |
| July | Harvest |
| August | Harvest |
| September | — |
| October | — |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
0.9"/week · Natural rainfall sufficient
📅 Days to Maturity
75–100 days
🧪 Soil pH
Needs 6–7 · Your soil: acceptable
🗺️ USDA Zone
Zone 7a
📆 Growing Season
185 days in Knox County
Growing Tips for Edamame in Knox County
Direct sow Edamame outdoors after April 19 in Knox County when soil has warmed and frost danger has passed.
Common pests for Edamame in this region include bean beetles and aphids. Use row covers early in the season and inspect plants weekly.
General growing tips
Direct sow after soil is warm. Do not over-fertilize with nitrogen. Harvest when pods are plump and bright green but before they start to yellow. Steam or boil pods before eating.
Companion Planting
Good Companions
Avoid Planting Near
Check more plant combinations with our Companion Planting Checker →
Edamame in Other Locations
Frequently Asked Questions
When should I plant Edamame in Knox County, KY?
Knox County is in Zone 7a with an average last frost of April 19. Plan your Edamame planting based on this frost date — see the calendar above for exact timing.
What planting zone is Knox County, KY?
Knox County, Kentucky is in USDA Hardiness Zone 7a. The average last spring frost is April 19 and first fall frost is October 21.
When should I plant Edamame in Knox County County, ?
In Knox County County, , plant Edamame after the last frost (around April 19) and before the first frost (around October 21). Best results when soil holds above 50°F.
What growing zone is Knox County County, for Edamame?
Knox County County sits in USDA Zone 7a. Edamame grows reliably in zones 3a through 10b, so it's a good fit here.
Can Edamame grow in Knox County County's climate?
Yes — Edamame grows well in Knox County County's temperate climate. Knox County County averages a 185-day frost-free season, with last frost around April 19 and first frost around October 21.
Your Knox County Garden Planner — Free
A 22-page printable planner built for Knox 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.