Blog

When to Plant Edamame in Walton County, FL

Walton County, Florida Zone 9a May

What to do in May

Each item below is timed to Walton County, Florida's frost dates and soil temperatures. Skip nothing, stress about nothing.

Avg. last frost March 14
Avg. first frost November 15
Soil temp (4") 74°F
Watering Moderate
Pest pressure High
Daylight 13.5 hrs
Get ahead of June
  • First harvests: edamame

Instant PDF download. No spam, unsubscribe any time.

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.

Walton County, Florida is in USDA Zone 9a. The average last spring frost is March 14 and the first fall frost is November 15, giving you a growing season of approximately 246 days.

At an elevation of 200 feet, Walton County receives approximately 52.8 inches of rainfall annually with predominantly sand soil. Summer highs average 95°F, so Edamame may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — but Edamame will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Edamame root diseases.

Walton County, FL (Zone 9a) Long season
246 days
Last Spring Frost March 14
246 growing days
First Fall Frost November 15

Walton County Soil Profile

Soil Type

Sand

Soil pH

4.8-6

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (129 days to spare)
Transplant: Mar 6 🍅 Harvest: May 22 – Jul 3
Recommended (50%) ✓ Fits season (127 days to spare)
Transplant: Mar 14 🍅 Harvest: May 30 – Jul 11
Safe Start (90%) ✓ Fits season (124 days to spare)
Transplant: Apr 6 🍅 Harvest: Jun 22 – Aug 3

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 Walton County

How your county's soil matches Edamame's growing requirements.

Soil pH

Your soil pH (4.8–6.0) is more acidic than Edamame prefers (6.0–7.0). Add garden lime to raise pH.

Soil Texture

Sandy soil in Walton County warms quickly in spring but drains fast. Edamame will need more frequent watering and regular compost additions to retain nutrients.

Drainage

Drainage is adequate for Edamame.

Organic Matter

Organic matter is low (1.5%). Add 2-3 inches of compost before planting Edamame.

How to Plant Edamame

1"
Planting Depth
15"
Between Plants
24"
Between Rows

Succession Planting Edamame

3
successive plantings in your 246-day season

Sow every 8.6 weeks. Last sowing by Aug 07 to harvest before frost.

Plant Water Budget

Plant needs
0.9″/week
Rainfall provides
0.9″/week
You supply
0.3″/week
Watering frequency Only during dry spells
Season total 588 gal / 100 sq ft

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 2.1" 0" ❄️ Dormant
Feb 2.8" 0" ❄️ Dormant
Mar 3.9" 3.2" 0.7" 💧 Light watering
Apr 3.9" 2.6" 1.3" 💧 Light watering
May 3.9" 3.5" 0.4" 💧 Light watering
Jun 3.9" 7.5" 0" ✅ Rainfall sufficient
Jul 3.9" 8.1" 0" ✅ Rainfall sufficient
Aug 3.9" 7.8" 0" ✅ Rainfall sufficient
Sep 3.9" 6.7" 0" ✅ Rainfall sufficient
Oct 3.9" 4.2" 0" ✅ Rainfall sufficient
Nov 3.9" 2.1" 1.8" 💧 Light watering
Dec 2.3" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Nov in Walton 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 needs ~1,859 GDD — county provides 5,227 GDD Excellent fit

Edamame Planting Timeline — Walton County, FL

Edamame Planting Calendar

Activity When Date Range
Direct Sow March 21 Mar 21 – Apr 11
Harvest June 6 Jun 6 – Jul 18

Plant 1" deep · 15" apart · Rows 24" apart

Month-by-Month Timeline

MonthActivities
January
February
March Direct Sow
April Direct Sow
May
June Harvest
July Harvest
August
September
October
November
December

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.9"/week · Only during dry spells

📅 Days to Maturity

75–100 days

🧪 Soil pH

Needs 6–7 · Your soil: too_acidic

🗺️ USDA Zone

Zone 9a

📆 Growing Season

246 days in Walton County

Growing Tips for Edamame in Walton County

Direct sow Edamame outdoors after March 14 in Walton County when soil has warmed and frost danger has passed.

Sandy soil in Walton County dries quickly — mulch Edamame with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.

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

  • Onion
  • Garlic

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Edamame in Walton County, FL?

Walton County is in Zone 9a with an average last frost of March 14. Plan your Edamame planting based on this frost date — see the calendar above for exact timing.

What planting zone is Walton County, FL?

Walton County, Florida is in USDA Hardiness Zone 9a. The average last spring frost is March 14 and first fall frost is November 15.

🌱

Your Walton County Garden Planner — Free

A 24-page printable planner built for Walton County (Zone 9a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.

Instant PDF download. No spam, unsubscribe any time.

Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Walton County, FL. Local conditions may vary. Last updated: May 2026.

Sources & credits

Every number on this page traces back to a primary horticulture or government data source. Click through to verify.