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When to plant Bitter Melon in Wareham,
Plant Bitter Melon in Wareham, when soil hits 50°F — usually April 25. Continue planting through May 16 for the spring crop.
When to Plant Bitter Melon in Wareham, MA
June in the garden — Plymouth County, Massachusetts
We've pulled the most time-sensitive tasks for Plymouth County, Massachusetts this June and put them front and centre. Tackle them in order.
Bitter melon is a tropical vine producing warty, bitter fruits used in Asian and Indian cuisine. The intense bitterness is prized for its culinary and health properties.
Wareham, Massachusetts is in USDA Zone 6b. The average last spring frost is April 18 and the first fall frost is October 26, giving you a growing season of approximately 191 days.
At an elevation of 947 feet, Plymouth County receives approximately 46.1 inches of rainfall annually with predominantly silt loam soil. Summer highs average 90°F, providing good warmth for Bitter Melon during the growing season.
Wareham Soil Profile
Soil Type
Silt Loam
Soil pH
4.8-6.6
Drainage
Well Drained
Bitter 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 Wareham
How your county's soil matches Bitter Melon's growing requirements.
Soil pH
Your soil pH (4.8–6.6) is more acidic than Bitter Melon prefers (6.0–7.0). Add garden lime to raise pH.
Soil Texture
The silt loam soil in Plymouth County is excellent for Bitter Melon — good drainage, moisture retention, and nutrient holding capacity.
Organic Matter
Organic matter is moderate (3.6%). Annual compost additions will help Bitter Melon.
How to Plant Bitter Melon
Succession Planting Bitter Melon
Sow every 6.9 weeks. Last sowing by Jul 28 to harvest before frost.
Bitter Melon Water Budget
Monthly Watering Guide for Bitter Melon
Bitter 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 | Bitter Melon Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 3" | 0" | ❄️ Dormant |
| Feb | — | 2.6" | 0" | ❄️ Dormant |
| Mar | — | 3.7" | 0" | ❄️ Dormant |
| Apr | 4.3" | 4.3" | 0" | ✅ Rainfall sufficient |
| May | 4.3" | 4.6" | 0" | ✅ Rainfall sufficient |
| Jun | 4.3" | 4.5" | 0" | ✅ Rainfall sufficient |
| Jul | 4.3" | 5.2" | 0" | ✅ Rainfall sufficient |
| Aug | 4.3" | 4.1" | 0.2" | 💧 Light watering |
| Sep | 4.3" | 3.3" | 1" | 💧 Light watering |
| Oct | 4.3" | 3.3" | 1" | 💧 Light watering |
| Nov | — | 3.9" | 0" | ❄️ Dormant |
| Dec | — | 3.6" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Apr–Oct in Plymouth County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Bitter 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.
Bitter Melon Planting Timeline — Wareham, MA
Bitter Melon Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | February 21 | Feb 21 – Mar 7 |
| Transplant Outdoors | May 2 | May 2 – May 16 |
| Direct Sow | April 25 | Apr 25 – May 16 |
| Harvest | July 4 | Jul 4 – Aug 15 |
Plant 1" deep · 30" apart · Rows 42" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | Start Indoors |
| March | Start Indoors |
| April | 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 · Natural rainfall sufficient
📅 Days to Maturity
60–90 days
🧪 Soil pH
Needs 6–7 · Your soil: too_acidic
🗺️ USDA Zone
Zone 6b
📆 Growing Season
191 days in Plymouth County
Growing Tips for Bitter Melon in Wareham
Direct sow Bitter Melon outdoors after April 18 in Plymouth County when soil has warmed and frost danger has passed.
Common pests for Bitter 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 4 weeks before last frost. Provide a trellis for climbing. Harvest fruits while still green and firm. Reduce bitterness by salting sliced fruit before cooking.
Companion Planting
Good Companions
Avoid Planting Near
Check more plant combinations with our Companion Planting Checker →
Bitter Melon in Other Locations
When should I plant Bitter Melon in Wareham, ?
In Wareham, , plant Bitter Melon after the last frost (around April 18) and before the first frost (around October 26). Best results when soil holds above 50°F.
What growing zone is Wareham, for Bitter Melon?
Wareham sits in USDA Zone 6b. Bitter Melon grows reliably in zones 5a through 11b, so it's a good fit here.
Can Bitter Melon grow in Wareham's climate?
Yes — Bitter Melon grows well in Wareham's temperate climate. Wareham averages a 191-day frost-free season, with last frost around April 18 and first frost around October 26.
Your Plymouth County Garden Planner — Free
A 22-page printable planner built for Plymouth 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.