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When to Plant Cucumber in Marion County, TN

Cucumbers are a warm-season vine crop available in slicing and pickling varieties. They are prolific producers when given warmth, moisture, and a trellis to climb.

Marion County, Tennessee is in USDA Zone 7a. The average last spring frost is April 5 and the first fall frost is October 29, giving you a growing season of approximately 207 days.

At an elevation of 1,867 feet, Marion County receives approximately 41.3 inches of rainfall annually with predominantly silt loam soil. Summer highs average 92ยฐF, providing good warmth for Cucumber during the growing season.

Marion County, TN (Zone 7a) Long season
207 days
Last Spring Frost April 5
207 growing days
First Fall Frost October 29

Marion County Soil Profile

Soil Type

Silt Loam

Soil pH

5.5-6.5

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (82 days to spare)
Start indoors: Feb 28 Transplant: Apr 11 🍅 Harvest: Jun 6 – Aug 1
Recommended (50%) ✓ Fits season (81 days to spare)
Start indoors: Mar 8 Transplant: Apr 19 🍅 Harvest: Jun 14 – Aug 9
Safe Start (90%) ✓ Fits season (79 days to spare)
Start indoors: Mar 22 Transplant: May 3 🍅 Harvest: Jun 28 – Aug 23

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.

Plant Water Budget

Plant needs
1.5″/week
Rainfall provides
0.8″/week
You supply
0.7″/week
Watering frequency 1-2 times/week
Season total 1,220 gal / 100 sq ft
Cucumber needs ~1,140 GDD — county provides 3,933 GDD Excellent fit

Cucumber Planting Timeline โ€” Marion County, TN

Cucumber Planting Calendar

Activity When Date Range
Start Indoors March 8 Mar 8 โ€“ Mar 22
Transplant Outdoors April 19 Apr 19 โ€“ May 3
Direct Sow April 12 Apr 12 โ€“ May 3
Harvest June 14 Jun 14 โ€“ Aug 9

Plant 0.5" deep ยท 24" apart ยท Rows 48" apart

Month-by-Month Timeline

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

Growing Conditions

Sun

Full Sun (6-8+ hours)

Water

High โ€” keep soil consistently moist

Days to Maturity

50โ€“70 days

Soil pH

6 โ€“ 7

USDA Zone

Zone 7a

Growing Season

207 days

Growing Tips for Marion County

Direct sow after last frost or start indoors 3 weeks early. Provide a trellis for vining types to save space and improve air circulation. Harvest frequently to encourage production.

Companion Planting

Good Companions

Avoid Planting Near

  • Potatoes
  • Sage

Level Up Your Garden

Frequently Asked Questions

When should I plant Cucumber in Marion County, TN?

Marion County is in Zone 7a with an average last frost of April 5. Plan your Cucumber planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Marion County, TN?

Marion County, Tennessee is in USDA Hardiness Zone 7a. The average last spring frost is April 5 and first fall frost is October 29.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Marion County gardeners in Zone 7a organize planting dates, track what's growing, and never miss a planting window.

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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 Marion County, TN. Local conditions may vary. Last updated: April 2026.