When to Plant Cantaloupe in Morrow County, OR
June in Morrow County, Oregon — your action list
If you only do a handful of things in the garden this June, make it these. They're sequenced around your zone's frost timing.
Coming up in July — start thinking about
- First harvests: cantaloupe
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.
Morrow County, Oregon is in USDA Zone 7b. The average last spring frost is April 25 and the first fall frost is October 15, giving you a growing season of approximately 173 days.
At an elevation of 2,335 feet, Morrow County receives approximately 20.9 inches of rainfall annually with predominantly silt loam soil. Summer highs average 88°F, providing good warmth for Cantaloupe during the growing season.
Morrow County Soil Profile
Soil Type
Silt Loam
Soil pH
5.4-6.8
Drainage
Well Drained
Cantaloupe 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 Morrow County
How your county's soil matches Cantaloupe's growing requirements.
Soil pH
Your soil pH (5.4–6.8) overlaps with Cantaloupe's range (6.0–7.0), though not a perfect match.
Soil Texture
The silt loam soil in Morrow County is excellent for Cantaloupe — good drainage, moisture retention, and nutrient holding capacity.
Drainage
Drainage is adequate for Cantaloupe.
Organic Matter
Organic matter is excellent (4.6%) — Cantaloupe will thrive.
How to Plant Cantaloupe
Succession Planting Cantaloupe
Sow every 8 weeks. Last sowing by Jul 17 to harvest before frost.
Cantaloupe Water Budget
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 | — | 3" | 0" | ❄️ Dormant |
| Feb | — | 2.8" | 0" | ❄️ Dormant |
| Mar | — | 2.1" | 0" | ❄️ Dormant |
| Apr | 5.6" | 1.4" | 4.2" | 🚿 Regular watering |
| May | 5.6" | 1.2" | 4.4" | 🚿 Regular watering |
| Jun | 5.6" | 0.7" | 4.9" | 🚿 Regular watering |
| Jul | 5.6" | 0.4" | 5.2" | 🚿 Regular watering |
| Aug | 5.6" | 0.4" | 5.2" | 🚿 Regular watering |
| Sep | 5.6" | 0.8" | 4.8" | 🚿 Regular watering |
| Oct | 5.6" | 1.7" | 3.9" | 🚿 Regular watering |
| Nov | — | 3.2" | 0" | ❄️ Dormant |
| Dec | — | 3.2" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Apr–Oct in Morrow 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 Planting Timeline — Morrow County, OR
Cantaloupe Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Transplant Outdoors | May 16 | May 16 – May 30 |
| Harvest | July 25 | Jul 25 – Aug 29 |
Plant 1" deep · 30" apart · Rows 42" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | — |
| April | — |
| May | Transplant Outdoors |
| June | — |
| July | Harvest |
| August | Harvest |
| September | — |
| October | — |
| November | — |
| December | — |
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 7b
📆 Growing Season
173 days in Morrow County
Growing Tips for Cantaloupe in Morrow County
Direct sow Cantaloupe outdoors after April 25 in Morrow County when soil has warmed and frost danger has passed.
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.
Morrow County receives only 21" of rain annually. Cantaloupe needs consistent moisture — install drip irrigation or water deeply 2-3 times per week.
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
Check more plant combinations with our Companion Planting Checker →
Cantaloupe in Other Locations
Frequently Asked Questions
When should I plant Cantaloupe in Morrow County, OR?
Morrow County is in Zone 7b with an average last frost of April 25. Plan your Cantaloupe planting based on this frost date — see the calendar above for exact timing.
What planting zone is Morrow County, OR?
Morrow County, Oregon is in USDA Hardiness Zone 7b. The average last spring frost is April 25 and first fall frost is October 15.
Your Morrow County Garden Planner — Free
A 22-page printable planner built for Morrow County (Zone 7b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.