When to Plant Watermelon in Falls County, TX
Your May gardening checklist
Your garden in Falls County, Texas is working on a schedule, even when you're not. Here's where you should be this May.
June will be here before you know it — start on
- First harvests: watermelon
Watermelon is a sprawling vine crop that produces sweet, juicy fruits in hot weather. Varieties range from personal-sized icebox types to 50-pound giants.
Falls County, Texas is in USDA Zone 8b. The average last spring frost is March 17 and the first fall frost is November 13, giving you a growing season of approximately 241 days.
At an elevation of 66 feet, Falls County receives approximately 66.1 inches of rainfall annually with predominantly clay soil. Summer highs average 97°F, so Watermelon may need afternoon shade and extra watering during peak heat. Clay soil retains moisture well for Watermelon, but amend with compost to improve drainage and prevent root rot. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Watermelon root diseases.
Falls County Soil Profile
Soil Type
Clay
Soil pH
7.1-8.2
Drainage
Well Drained
Plant Planting Risk Windows
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 Falls County
How your county's soil matches Watermelon's growing requirements.
Soil pH
Your soil pH (7.1–8.2) is more alkaline than Watermelon prefers (6.0–7.5). Add sulfur or peat moss to lower pH.
Soil Texture
Your clay soil in Falls County is workable for Watermelon. Add compost annually to improve structure.
Organic Matter
Organic matter is moderate (2.6%). Annual compost additions will help Watermelon.
How to Plant Watermelon
Succession Planting Watermelon
Sow every 8 weeks. Last sowing by Aug 05 to harvest before frost.
Plant Water Budget
Monthly Watering Guide for Watermelon
Watermelon 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 | Watermelon Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 1.8" | 0" | ❄️ Dormant |
| Feb | — | 2" | 0" | ❄️ Dormant |
| Mar | 6.5" | 4.7" | 1.8" | 💧 Light watering |
| Apr | 6.5" | 6.7" | 0" | ✅ Rainfall sufficient |
| May | 6.5" | 10" | 0" | ✅ Rainfall sufficient |
| Jun | 6.5" | 9.5" | 0" | ✅ Rainfall sufficient |
| Jul | 6.5" | 9.2" | 0" | ✅ Rainfall sufficient |
| Aug | 6.5" | 7.4" | 0" | ✅ Rainfall sufficient |
| Sep | 6.5" | 7" | 0" | ✅ Rainfall sufficient |
| Oct | 6.5" | 4.1" | 2.4" | 💧 Light watering |
| Nov | 6.5" | 2.2" | 4.3" | 🚿 Regular watering |
| Dec | — | 1.6" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Mar–Nov in Falls County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Watermelon 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.
Watermelon Planting Timeline — Falls County, TX
Watermelon Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | February 17 | Feb 17 – Mar 3 |
| Transplant Outdoors | March 31 | Mar 31 – Apr 14 |
| Direct Sow | March 24 | Mar 24 – Apr 14 |
| Harvest | June 9 | Jun 9 – Jul 28 |
Plant 1" deep · 30" apart · Rows 42" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | Start Indoors |
| March | Start Indoors Transplant Outdoors Direct Sow |
| April | Transplant Outdoors Direct Sow |
| May | — |
| June | Harvest |
| July | Harvest |
| August | — |
| September | — |
| October | — |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
1.5"/week · 1-2 times/week
📅 Days to Maturity
70–100 days
🧪 Soil pH
Needs 6–7.5 · Your soil: too_alkaline
🗺️ USDA Zone
Zone 8b
📆 Growing Season
241 days in Falls County
Growing Tips for Watermelon in Falls County
Direct sow Watermelon outdoors after March 17 in Falls County when soil has warmed and frost danger has passed.
With Falls County's clay soil (36% clay), work in 3-4 inches of compost before planting Watermelon. Avoid tilling when soil is wet to prevent compaction.
With summer highs reaching 97°F in Falls County, provide afternoon shade for Watermelon and water deeply in the morning.
Common pests for Watermelon 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 after soil is warm. Plant on mounds with plenty of space. Check ripeness by looking for a yellow ground spot and dull thump when tapped.
Recommended Watermelon Varieties for Falls County
Full-size melons that thrive with your long season
Companion Planting
Good Companions
Avoid Planting Near
Check more plant combinations with our Companion Planting Checker →
Watermelon in Other Locations
Frequently Asked Questions
When should I plant Watermelon in Falls County, TX?
Falls County is in Zone 8b with an average last frost of March 17. Plan your Watermelon planting based on this frost date — see the calendar above for exact timing.
What planting zone is Falls County, TX?
Falls County, Texas is in USDA Hardiness Zone 8b. The average last spring frost is March 17 and first fall frost is November 13.
Your Falls County Garden Planner — Free
A 24-page printable planner built for Falls County (Zone 8b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.