When to plant Melon in Rolla,
Rolla's spring Melon window runs April 16 through May 7. time plantings around the expected last-frost window for best survival.
When to Plant Melon in Rolla, MO
Top priorities for Rolla, MO gardeners in June
Welcome to June in Zone 6b. These are the moves that will have the biggest impact on your growing season.
July will be here before you know it — start on
- First harvests: melon
Melons are warm-season vine crops that produce sweet, juicy fruits in many varieties including muskmelon and honeydew. They need a long, hot growing season.
Rolla, Missouri is in USDA Zone 6b. The average last spring frost is April 9 and the first fall frost is October 24, giving you a growing season of approximately 198 days.
At an elevation of 1,057 feet, Phelps County receives approximately 40.8 inches of rainfall annually with predominantly silt loam soil. Summer highs average 87°F, providing good warmth for Melon during the growing season.
Rolla Soil Profile
Soil Type
Silt Loam
Soil pH
5.2-7
Drainage
Well Drained
Melon 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 Rolla
How your county's soil matches Melon's growing requirements.
Soil pH
Your soil pH (5.2–7.0) overlaps with Melon's range (6.0–7.0), though not a perfect match.
Soil Texture
The silt loam soil in Phelps County is excellent for Melon — good drainage, moisture retention, and nutrient holding capacity.
Organic Matter
Organic matter is moderate (3.0%). Annual compost additions will help Melon.
How to Plant Melon
Succession Planting Melon
Sow every 8 weeks. Last sowing by Jul 16 to harvest before frost.
Melon Water Budget
Monthly Watering Guide for Melon
Melon needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.
| Month | Melon Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 1.4" | 0" | ❄️ Dormant |
| Feb | — | 1.7" | 0" | ❄️ Dormant |
| Mar | — | 3" | 0" | ❄️ Dormant |
| Apr | 4.3" | 3.8" | 0.5" | 💧 Light watering |
| May | 4.3" | 5.2" | 0" | ✅ Rainfall sufficient |
| Jun | 4.3" | 4.9" | 0" | ✅ Rainfall sufficient |
| Jul | 4.3" | 4.6" | 0" | ✅ Rainfall sufficient |
| Aug | 4.3" | 4.7" | 0" | ✅ Rainfall sufficient |
| Sep | 4.3" | 3.7" | 0.6" | 💧 Light watering |
| Oct | 4.3" | 2.7" | 1.6" | 💧 Light watering |
| Nov | — | 3" | 0" | ❄️ Dormant |
| Dec | — | 2" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Apr–Oct in Phelps County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Melon 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.
Melon Planting Timeline — Rolla, MO
Melon Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | March 5 | Mar 5 – Mar 19 |
| Transplant Outdoors | April 23 | Apr 23 – May 7 |
| Direct Sow | April 16 | Apr 16 – May 7 |
| Harvest | July 2 | Jul 2 – Aug 20 |
Plant 1" deep · 30" apart · Rows 42" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | Start Indoors |
| April | Transplant Outdoors Direct Sow |
| May | Transplant Outdoors Direct Sow |
| June | — |
| July | Harvest |
| August | Harvest |
| September | — |
| October | — |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
1"/week · Only during dry spells
📅 Days to Maturity
70–100 days
🧪 Soil pH
Needs 6–7 · Your soil: acceptable
🗺️ USDA Zone
Zone 6b
📆 Growing Season
198 days in Phelps County
Growing Tips for Melon in Rolla
Direct sow Melon outdoors after April 09 in Phelps County when soil has warmed and frost danger has passed.
Common pests for Melon 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 before transplanting. Plant on raised mounds of compost-enriched soil. Reduce watering as fruits ripen to concentrate sweetness.
Companion Planting
Good Companions
Avoid Planting Near
Check more plant combinations with our Companion Planting Checker →
Melon in Other Locations
When should I plant Melon in Rolla, ?
In Rolla, , plant Melon after the last frost (around April 9) and before the first frost (around October 24). Best results when soil holds above 50°F.
What growing zone is Rolla, for Melon?
Rolla sits in USDA Zone 6b. Melon grows reliably in zones 4a through 11b, so it's a good fit here.
Can Melon grow in Rolla's climate?
Yes — Melon grows well in Rolla's temperate climate. Rolla averages a 198-day frost-free season, with last frost around April 9 and first frost around October 24.
Your Phelps County Garden Planner — Free
A 22-page printable planner built for Phelps County (Zone 6b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.