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When to Plant Squash (Summer) in Dyer County, TN

Dyer County, Tennessee Zone 7b May

Dyer County, Tennessee gardeners: here's your May plan

Your garden in Dyer County, Tennessee is working on a schedule, even when you're not. Here's where you should be this May.

Avg. last frost April 2
Avg. first frost October 28
Soil temp (4") 68°F
Watering Low
Pest pressure Moderate
Daylight 13.9 hrs
Get ahead of June
  • First harvests: squash (summer)

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Summer squash includes zucchini, yellow crookneck, and pattypan varieties that are harvested young and tender. They are prolific producers in warm weather.

Dyer County, Tennessee is in USDA Zone 7b. The average last spring frost is April 2 and the first fall frost is October 28, giving you a growing season of approximately 209 days.

At an elevation of 1,191 feet, Dyer County receives approximately 51.6 inches of rainfall annually with predominantly silt loam soil. Summer highs average 92°F, providing good warmth for Squash (Summer) during the growing season. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Squash (Summer) root diseases.

Dyer County, TN (Zone 7b) Long season
209 days
Last Spring Frost April 2
209 growing days
First Fall Frost October 28

Dyer County Soil Profile

Soil Type

Silt Loam

Soil pH

5.7-6.5

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (85 days to spare)
Start indoors: Feb 26 Transplant: Apr 9 🍅 Harvest: May 28 – Jul 30
Recommended (50%) ✓ Fits season (83 days to spare)
Start indoors: Mar 5 Transplant: Apr 16 🍅 Harvest: Jun 4 – Aug 6
Safe Start (90%) ✓ Fits season (89 days to spare)
Start indoors: Mar 21 Transplant: May 2 🍅 Harvest: Jun 20 – Aug 22

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 Dyer County

How your county's soil matches Squash (Summer)'s growing requirements.

Soil pH

Your soil pH (5.7–6.5) overlaps with Squash (Summer)'s range (6.0–7.5), though not a perfect match.

Soil Texture

The silt loam soil in Dyer County is excellent for Squash (Summer) — good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is moderate (3.2%). Annual compost additions will help Squash (Summer).

How to Plant Squash (Summer)

1"
Planting Depth
30"
Between Plants
42"
Between Rows

Succession Planting Squash (Summer)

5
successive plantings in your 209-day season

Sow every 5.1 weeks. Last sowing by Aug 24 to harvest before frost.

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
1.0″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft

Monthly Watering Guide for Squash (Summer)

Squash (Summer) needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.

Month Squash (Summer) Needs Rainfall You Supplement Action
Jan 4.8" 0" ❄️ Dormant
Feb 3.5" 0" ❄️ Dormant
Mar 5.4" 0" ❄️ Dormant
Apr 4.3" 3.6" 0.7" 💧 Light watering
May 4.3" 4.3" 0" ✅ Rainfall sufficient
Jun 4.3" 4" 0.3" 💧 Light watering
Jul 4.3" 4.8" 0" ✅ Rainfall sufficient
Aug 4.3" 4.7" 0" ✅ Rainfall sufficient
Sep 4.3" 4.1" 0.2" 💧 Light watering
Oct 4.3" 3.6" 0.7" 💧 Light watering
Nov 4" 0" ❄️ Dormant
Dec 4.7" 0" ❄️ Dormant

Water needs are for active growing months only (Apr–Oct in Dyer County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.

Squash (Summer) 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.

Squash (Summer) needs ~1,045 GDD — county provides 3,971 GDD Excellent fit

Squash (Summer) Planting Timeline — Dyer County, TN

Squash (Summer) Planting Calendar

Activity When Date Range
Start Indoors March 5 Mar 5 – Mar 19
Transplant Outdoors April 16 Apr 16 – Apr 30
Direct Sow April 9 Apr 9 – Apr 30
Harvest June 4 Jun 4 – Aug 6

Plant 1" deep · 30" apart · Rows 42" apart

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · Natural rainfall sufficient

📅 Days to Maturity

45–65 days

🧪 Soil pH

Needs 6–7.5 · Your soil: acceptable

🗺️ USDA Zone

Zone 7b

📆 Growing Season

209 days in Dyer County

Growing Tips for Squash (Summer) in Dyer County

Direct sow Squash (Summer) outdoors after April 02 in Dyer County when soil has warmed and frost danger has passed.

Your generous 209.0-day season in Dyer County allows multiple plantings of Squash (Summer). Sow every 22.0 days for continuous harvest.

Common pests for Squash (Summer) in this region include squash vine borer and cucumber beetles. Use row covers early in the season and inspect plants weekly.

General growing tips

Direct sow after last frost on mounds. Harvest frequently when fruits are 6-8 inches for best texture. Check plants daily as they grow rapidly in summer heat.

Companion Planting

Good Companions

Avoid Planting Near

  • Potatoes

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Squash (Summer) in Dyer County, TN?

Dyer County is in Zone 7b with an average last frost of April 2. Plan your Squash (Summer) planting based on this frost date — see the calendar above for exact timing.

What planting zone is Dyer County, TN?

Dyer County, Tennessee is in USDA Hardiness Zone 7b. The average last spring frost is April 2 and first fall frost is October 28.

🌱

Your Dyer County Garden Planner — Free

A 24-page printable planner built for Dyer County (Zone 7b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.

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Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Dyer County, TN. 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.