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When to plant Bitter Melon in Clare County, MI

Plant Bitter Melon in Clare County during the brief May 21–June 11 window. With 142 frost-free days, fall plantings can't mature before October 3.

When to Plant Bitter Melon in Clare County, MI

Clare County, Michigan Zone 5a June

Clare County, Michigan gardeners: here's your June plan

Your garden in Clare County, Michigan is working on a schedule, even when you're not. Here's where you should be this June.

Avg. last frost May 14
Avg. first frost October 3
Soil temp (4") 69°F
Watering Low
Pest pressure High
Daylight 15.3 hrs

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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.

Clare County, Michigan is in USDA Zone 5a. The average last spring frost is May 14 and the first fall frost is October 3, giving you a growing season of approximately 142 days.

At an elevation of 1,150 feet, Clare County receives approximately 41.6 inches of rainfall annually with predominantly silt loam soil. Summer highs average 87°F, providing good warmth for Bitter Melon during the growing season.

Clare County, MI (Zone 5a) Short season
142 days
Last Spring Frost May 14
142 growing days
First Fall Frost October 3

Clare County Soil Profile

Soil Type

Silt Loam

Soil pH

6.2-7.1

Drainage

Well Drained

Bitter Melon Planting Risk Windows

Early Start (70% safe) ✓ Fits season (29 days to spare)
Start indoors: Mar 9 Transplant: May 18 🍅 Harvest: Jul 20 – Aug 31
Recommended (50%) ✓ Fits season (23 days to spare)
Start indoors: Mar 19 Transplant: May 28 🍅 Harvest: Jul 30 – Sep 10
Safe Start (90%) ✓ Fits season (24 days to spare)
Start indoors: Apr 5 Transplant: Jun 14 🍅 Harvest: Aug 16 – Sep 27

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 Clare County

How your county's soil matches Bitter Melon's growing requirements.

Soil pH

Your soil pH (6.2–7.1) overlaps with Bitter Melon's range (6.0–7.0), though not a perfect match.

Soil Texture

The silt loam soil in Clare County is excellent for Bitter Melon — good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is excellent (4.7%) — Bitter Melon will thrive.

How to Plant Bitter Melon

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

Succession Planting Bitter Melon

2
successive plantings in your 142-day season

Sow every 6.9 weeks. Last sowing by Jul 05 to harvest before frost.

Bitter Melon Water Budget

Plant needs
1.0″/week
Rainfall provides
1.2″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft

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 1.9" 0" ❄️ Dormant
Feb 1.9" 0" ❄️ Dormant
Mar 3.2" 0" ❄️ Dormant
Apr 3.8" 0" ❄️ Dormant
May 4.3" 5.5" 0" ✅ Rainfall sufficient
Jun 4.3" 5.5" 0" ✅ Rainfall sufficient
Jul 4.3" 4.1" 0.2" 💧 Light watering
Aug 4.3" 4.4" 0" ✅ Rainfall sufficient
Sep 4.3" 3.9" 0.4" 💧 Light watering
Oct 4.3" 2.8" 1.5" 💧 Light watering
Nov 2.6" 0" ❄️ Dormant
Dec 2" 0" ❄️ Dormant

Water needs are for active growing months only (May–Oct in Clare 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 needs ~1,144 GDD — county provides 2,165 GDD Excellent fit

Bitter Melon Planting Timeline — Clare County, MI

Bitter Melon Planting Calendar

Activity When Date Range
Start Indoors March 19 Mar 19 – Apr 2
Transplant Outdoors May 28 May 28 – Jun 11
Direct Sow May 21 May 21 – Jun 11
Harvest July 30 Jul 30 – Sep 10

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

Month-by-Month Timeline

MonthActivities
January
February
March Start Indoors
April Start Indoors
May Transplant Outdoors Direct Sow
June Transplant Outdoors Direct Sow
July Harvest
August Harvest
September Harvest
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: acceptable

🗺️ USDA Zone

Zone 5a

📆 Growing Season

142 days in Clare County

Growing Tips for Bitter Melon in Clare County

Direct sow Bitter Melon outdoors after May 14 in Clare 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

  • Potatoes

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Bitter Melon in Clare County, MI?

Clare County is in Zone 5a with an average last frost of May 14. Plan your Bitter Melon planting based on this frost date — see the calendar above for exact timing.

What planting zone is Clare County, MI?

Clare County, Michigan is in USDA Hardiness Zone 5a. The average last spring frost is May 14 and first fall frost is October 3.

When should I plant Bitter Melon in Clare County, MI?

In Clare County, MI, plant Bitter Melon after the last frost (around May 14) and before the first frost (around October 3). Best results when soil holds above 50°F.

What growing zone is Clare County, MI for Bitter Melon?

Clare County sits in USDA Zone 5a. Bitter Melon grows reliably in zones 5a through 11b, so it's a good fit here.

Can Bitter Melon grow in Clare County's climate?

Yes — Bitter Melon grows well in Clare County's temperate climate. Clare County averages a 142-day frost-free season, with last frost around May 14 and first frost around October 3.

🌱

Your Clare County Garden Planner — Free

A 22-page printable planner built for Clare County (Zone 5a). 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 Clare County, MI. Local conditions may vary. Last updated: June 2026.

Sources & credits

Every number on this page traces back to a primary horticulture or government data source. Click through to verify.