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When to Plant Cucumber in Navarro County, TX

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.

Navarro County, Texas is in USDA Zone 8a. The average last spring frost is March 11 and the first fall frost is November 14, giving you a growing season of approximately 248 days.

At an elevation of 221 feet, Navarro County receives approximately 70.4 inches of rainfall annually with predominantly clay soil. Summer highs average 93ยฐF, providing good warmth for Cucumber during the growing season. Clay soil retains moisture well for Cucumber, but amend with compost to improve drainage and prevent root rot. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Cucumber root diseases.

Navarro County, TX (Zone 8a) Long season
248 days
Last Spring Frost March 11
248 growing days
First Fall Frost November 14

Navarro County Soil Profile

Soil Type

Clay

Soil pH

7-7.7

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (122 days to spare)
Start indoors: Feb 6 Transplant: Mar 20 🍅 Harvest: May 15 – Jul 10
Recommended (50%) ✓ Fits season (122 days to spare)
Start indoors: Feb 11 Transplant: Mar 25 🍅 Harvest: May 20 – Jul 15
Safe Start (90%) ✓ Fits season (117 days to spare)
Start indoors: Mar 6 Transplant: Apr 17 🍅 Harvest: Jun 12 – Aug 7

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
1.2″/week
You supply
0.3″/week
Watering frequency 1-2 times/week
Season total 679 gal / 100 sq ft
Cucumber needs ~1,185 GDD — county provides 4,898 GDD Excellent fit

Cucumber Planting Timeline โ€” Navarro County, TX

Cucumber Planting Calendar

Activity When Date Range
Start Indoors February 11 Feb 11 โ€“ Feb 25
Transplant Outdoors March 25 Mar 25 โ€“ Apr 8
Direct Sow March 18 Mar 18 โ€“ Apr 8
Harvest May 20 May 20 โ€“ Jul 15

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

Month-by-Month Timeline

MonthActivities
January โ€”
February Start Indoors
March Transplant Outdoors Direct Sow
April Transplant Outdoors Direct Sow
May Harvest
June Harvest
July Harvest
August โ€”
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 8a

Growing Season

248 days

Growing Tips for Navarro 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 Navarro County, TX?

Navarro County is in Zone 8a with an average last frost of March 11. Plan your Cucumber planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Navarro County, TX?

Navarro County, Texas is in USDA Hardiness Zone 8a. The average last spring frost is March 11 and first fall frost is November 14.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Navarro County gardeners in Zone 8a 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 Navarro County, TX. Local conditions may vary. Last updated: April 2026.