Blog

When to Plant Cucumber in Cameron 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.

Cameron County, Texas is in USDA Zone 9b. The average last spring frost is February 4 and the first fall frost is December 22, giving you a growing season of approximately 321 days.

At an elevation of 4,025 feet, Cameron County receives approximately 58.6 inches of rainfall annually with predominantly loam soil. Summer highs average 103ยฐF, so Cucumber may need afternoon shade and extra watering during peak heat. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Cucumber root diseases.

Cameron County, TX (Zone 9b) Year-round
321 days
Last Spring Frost February 4
321 growing days
First Fall Frost December 22

Cameron County Soil Profile

Soil Type

Loam

Soil pH

6.7-7.8

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (214 days to spare)
Start indoors: Dec 20 Transplant: Jan 24 🍅 Harvest: Mar 21 – May 16
Recommended (50%) ✓ Fits season (202 days to spare)
Start indoors: Jan 7 Transplant: Feb 11 🍅 Harvest: Apr 8 – Jun 3
Safe Start (90%) ✓ Fits season (179 days to spare)
Start indoors: Feb 4 Transplant: Mar 11 🍅 Harvest: May 6 – Jul 1

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 Cameron County

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

Soil pH

Your soil pH (6.7โ€“7.8) is more alkaline than Cucumber prefers (6.0โ€“7.0). Add sulfur or peat moss to lower pH.

Soil Texture

The loam soil in Cameron County is excellent for Cucumber โ€” good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is moderate (2.2%). Annual compost additions will help Cucumber.

How to Plant Cucumber

0.5"
Planting Depth
24"
Between Plants
48"
Between Rows

Succession Planting Cucumber

7
successive plantings in your 321-day season

Sow every 5.7 weeks. Last sowing by Oct 13 to harvest before frost.

Plant Water Budget

Plant needs
1.5″/week
Rainfall provides
0.8″/week
You supply
0.7″/week
Watering frequency 2-3 times/week
Season total 2,108 gal / 100 sq ft

Monthly Watering Guide for Cucumber

Cucumber needs approximately 1.5 inches of water per week (6.5" per month). Here's how your county's rainfall compares month by month.

Month Cucumber Needs Rainfall You Supplement Action
Jan โ€” 1.6" 0" โ„๏ธ Dormant
Feb 6.5" 2.2" 4.3" ๐Ÿšฟ Regular watering
Mar 6.5" 3.1" 3.4" ๐Ÿšฟ Regular watering
Apr 6.5" 6.1" 0.4" ๐Ÿ’ง Light watering
May 6.5" 9.2" 0" โœ… Rainfall sufficient
Jun 6.5" 9.1" 0" โœ… Rainfall sufficient
Jul 6.5" 7.5" 0" โœ… Rainfall sufficient
Aug 6.5" 6.9" 0" โœ… Rainfall sufficient
Sep 6.5" 5.6" 0.9" ๐Ÿ’ง Light watering
Oct 6.5" 3.8" 2.7" ๐Ÿ’ง Light watering
Nov 6.5" 2.1" 4.4" ๐Ÿšฟ Regular watering
Dec 6.5" 1.4" 5.1" ๐Ÿšฟ Regular watering

Water needs are for active growing months only (Febโ€“Dec in Cameron County). Supplement amounts are based on average rainfall โ€” actual needs vary with temperature, soil, and mulching.

Cucumber 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" โ€” every day above 50ยฐF 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.

Cucumber needs ~1,635 GDD — county provides 8,774 GDD Excellent fit

Cucumber Planting Timeline โ€” Cameron County, TX

Cucumber Planting Calendar

Activity When Date Range
Start Indoors January 7 Jan 7 โ€“ Jan 21
Transplant Outdoors February 11 Feb 11 โ€“ Feb 25
Direct Sow February 4 Feb 4 โ€“ Feb 25
Harvest April 8 Apr 8 โ€“ Jun 3

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

Month-by-Month Timeline

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

Growing Conditions

โ˜€๏ธ Sun

Full Sun (6-8+ hours)

๐Ÿ’ง Water

1.5"/week ยท 2-3 times/week

๐Ÿ“… Days to Maturity

50โ€“70 days

๐Ÿงช Soil pH

Needs 6โ€“7 ยท Your soil: too_alkaline

๐Ÿ—บ๏ธ USDA Zone

Zone 9b

๐Ÿ“† Growing Season

321 days in Cameron County

Growing Tips for Cucumber in Cameron County

Direct sow Cucumber outdoors after February 04 in Cameron County when soil has warmed and frost danger has passed.

With summer highs reaching 103ยฐF in Cameron County, provide afternoon shade for Cucumber and water deeply in the morning.

Common pests for Cucumber 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 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

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Cucumber in Cameron County, TX?

Cameron County is in Zone 9b with an average last frost of February 4. Plan your Cucumber planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Cameron County, TX?

Cameron County, Texas is in USDA Hardiness Zone 9b. The average last spring frost is February 4 and first fall frost is December 22.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Cameron County gardeners in Zone 9b organize planting dates, track what's growing, and never miss a planting window.

Get Your Free Garden Planner →

Free download. Plan your entire garden season in minutes.

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