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When to Plant Cantaloupe in Grimes County, TX

Grimes County, Texas Zone 9a May

This month in Grimes County, Texas

Here's what deserves your attention in Grimes County, Texas this month. Everything below is tailored to Zone 9a and timed around your local frost dates.

Avg. last frost February 25
Avg. first frost December 1
Soil temp (4") 73°F
Watering Low
Pest pressure High
Daylight 13.5 hrs
  1. Collect cantaloupe at their peak

    This is the payoff month. Bring a basket, bring a friend, and get into the beds.

A few tasks this May that'll pay off in June
  • First harvests: cantaloupe

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Cantaloupe is a sweet, aromatic melon with salmon-colored flesh and a netted rind. It requires a long, warm growing season and is the quintessential summer fruit.

Grimes County, Texas is in USDA Zone 9a. The average last spring frost is February 25 and the first fall frost is December 1, giving you a growing season of approximately 279 days.

At an elevation of 33 feet, Grimes County receives approximately 65.2 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 91°F, providing good warmth for Cantaloupe during the growing season. Sandy soil warms quickly in spring — great for early planting — but Cantaloupe will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Cantaloupe root diseases.

Grimes County, TX (Zone 9a) Year-round
279 days
Last Spring Frost February 25
279 growing days
First Fall Frost December 1
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Grimes County Soil Profile

Soil Type

Sandy Loam

Soil pH

5.8-6.5

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (164 days to spare)
Transplant: Feb 26 🍅 Harvest: May 7 – Jun 11
Recommended (50%) ✓ Fits season (160 days to spare)
Transplant: Mar 11 🍅 Harvest: May 20 – Jun 24
Safe Start (90%) ✓ Fits season (163 days to spare)
Transplant: Mar 25 🍅 Harvest: Jun 3 – Jul 8

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 Grimes County

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

Soil pH

Your soil pH (5.8–6.5) overlaps with Cantaloupe's range (6.0–7.0), though not a perfect match.

Soil Texture

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

Drainage

Drainage is adequate for Cantaloupe.

Organic Matter

Organic matter is low (1.7%). Add 2-3 inches of compost before planting Cantaloupe.

How to Plant Cantaloupe

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

Succession Planting Cantaloupe

4
successive plantings in your 279-day season

Sow every 8 weeks. Last sowing by Sep 02 to harvest before frost.

Plant Water Budget

Plant needs
1.3″/week
Rainfall provides
1.0″/week
You supply
0.9″/week
Watering frequency 2-3 times/week
Season total 2,129 gal / 100 sq ft
Drought risk

Water stress score is 6/10 — consider drought-tolerant varieties and mulching

Monthly Watering Guide for Cantaloupe

Cantaloupe needs approximately 1.3 inches of water per week (5.6" per month). Here's how your county's rainfall compares month by month.

Month Cantaloupe Needs Rainfall You Supplement Action
Jan 1.9" 0" ❄️ Dormant
Feb 5.6" 2.1" 3.5" 🚿 Regular watering
Mar 5.6" 4.7" 0.9" 💧 Light watering
Apr 5.6" 6" 0" ✅ Rainfall sufficient
May 5.6" 9.9" 0" ✅ Rainfall sufficient
Jun 5.6" 9.9" 0" ✅ Rainfall sufficient
Jul 5.6" 8.3" 0" ✅ Rainfall sufficient
Aug 5.6" 8.3" 0" ✅ Rainfall sufficient
Sep 5.6" 6.6" 0" ✅ Rainfall sufficient
Oct 5.6" 3.9" 1.7" 💧 Light watering
Nov 5.6" 2" 3.6" 🚿 Regular watering
Dec 5.6" 1.7" 3.9" 🚿 Regular watering

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

Cantaloupe 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.

Cantaloupe needs ~1,460 GDD — county provides 5,110 GDD Excellent fit

Cantaloupe Planting Timeline — Grimes County, TX

Cantaloupe Planting Calendar

Activity When Date Range
Transplant Outdoors March 11 Mar 11 – Mar 25
Harvest May 20 May 20 – Jun 24

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

Month-by-Month Timeline

MonthActivities
January
February
March Transplant Outdoors
April
May Harvest
June Harvest
July
August
September
October
November
December
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Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1.3"/week · 2-3 times/week

📅 Days to Maturity

70–90 days

🧪 Soil pH

Needs 6–7 · Your soil: acceptable

🗺️ USDA Zone

Zone 9a

📆 Growing Season

279 days in Grimes County

Growing Tips for Cantaloupe in Grimes County

Direct sow Cantaloupe outdoors after February 25 in Grimes County when soil has warmed and frost danger has passed.

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

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

General growing tips

Start seeds indoors 3-4 weeks early or direct sow on warm mounds. Reduce watering as fruits ripen. Harvest when stem slips easily from the fruit with gentle pressure.

Companion Planting

Good Companions

Avoid Planting Near

  • Potatoes

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Cantaloupe in Grimes County, TX?

Grimes County is in Zone 9a with an average last frost of February 25. Plan your Cantaloupe planting based on this frost date — see the calendar above for exact timing.

What planting zone is Grimes County, TX?

Grimes County, Texas is in USDA Hardiness Zone 9a. The average last spring frost is February 25 and first fall frost is December 1.

🌱

Your Grimes County Garden Planner — Free

A 24-page printable planner built for Grimes 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.

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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 Grimes County, TX. 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.