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When to Plant Bitter Melon in Sumter County, FL

Sumter County, Florida Zone 9b May

Sumter County, Florida gardeners: here's your May plan

A quick May briefing for Sumter County, Florida gardeners — what's urgent, what's next, and what can wait.

Avg. last frost February 6
Avg. first frost December 6
Soil temp (4") 77°F
Watering Low
Pest pressure High
Daylight 13.4 hrs
  1. Basket week: bitter melon

    Don't tug. Use scissors or pruners for clean cuts — torn stems invite disease.

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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.

Sumter County, Florida is in USDA Zone 9b. The average last spring frost is February 6 and the first fall frost is December 6, giving you a growing season of approximately 303 days.

At an elevation of 463 feet, Sumter County receives approximately 60.9 inches of rainfall annually with predominantly sand soil. Summer highs average 96°F, so Bitter Melon may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — but Bitter Melon will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Bitter Melon root diseases.

Sumter County, FL (Zone 9b) Year-round
303 days
Last Spring Frost February 6
303 growing days
First Fall Frost December 6
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Sumter County Soil Profile

Soil Type

Sand

Soil pH

5-6.1

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (194 days to spare)
Start indoors: Dec 13 Transplant: Jan 31 🍅 Harvest: Apr 4 – May 16
Recommended (50%) ✓ Fits season (191 days to spare)
Start indoors: Dec 26 Transplant: Feb 13 🍅 Harvest: Apr 17 – May 29
Safe Start (90%) ✓ Fits season (184 days to spare)
Start indoors: Jan 21 Transplant: Mar 11 🍅 Harvest: May 13 – Jun 24

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 Sumter County

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

Soil pH

Your soil pH (5.0–6.1) is more acidic than Bitter Melon prefers (6.0–7.0). Add garden lime to raise pH.

Soil Texture

Sandy soil in Sumter County warms quickly in spring but drains fast. Bitter Melon will need more frequent watering and regular compost additions to retain nutrients.

Drainage

Drainage is adequate for Bitter Melon.

Organic Matter

Organic matter is low (1.4%). Add 2-3 inches of compost before planting Bitter Melon.

How to Plant Bitter Melon

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

Succession Planting Bitter Melon

6
successive plantings in your 303-day season

Sow every 6.9 weeks. Last sowing by Sep 07 to harvest before frost.

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
0.8″/week
You supply
0.6″/week
Watering frequency 1-2 times/week
Season total 1,489 gal / 100 sq ft
Drought risk

Water stress score is 6/10 — consider drought-tolerant varieties and mulching

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 3.2" 0" ❄️ Dormant
Feb 4.3" 3.3" 1" 💧 Light watering
Mar 4.3" 3.6" 0.7" 💧 Light watering
Apr 4.3" 2.7" 1.6" 💧 Light watering
May 4.3" 4.3" 0" ✅ Rainfall sufficient
Jun 4.3" 8" 0" ✅ Rainfall sufficient
Jul 4.3" 8.7" 0" ✅ Rainfall sufficient
Aug 4.3" 8.5" 0" ✅ Rainfall sufficient
Sep 4.3" 7.6" 0" ✅ Rainfall sufficient
Oct 4.3" 6.1" 0" ✅ Rainfall sufficient
Nov 4.3" 2.6" 1.7" 💧 Light watering
Dec 4.3" 2.5" 1.8" 💧 Light watering

Water needs are for active growing months only (Feb–Dec in Sumter 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 ~1,650 GDD — county provides 6,688 GDD Excellent fit

Bitter Melon Planting Timeline — Sumter County, FL

Bitter Melon Planting Calendar

Activity When Date Range
Start Indoors December 26 Dec 26 – Jan 9
Transplant Outdoors February 13 Feb 13 – Feb 27
Direct Sow February 6 Feb 6 – Feb 27
Harvest April 17 Apr 17 – May 29

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

Month-by-Month Timeline

MonthActivities
January Start Indoors
February Transplant Outdoors Direct Sow
March
April Harvest
May Harvest
June
July
August
September
October
November
December Start Indoors
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Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · 1-2 times/week

📅 Days to Maturity

60–90 days

🧪 Soil pH

Needs 6–7 · Your soil: too_acidic

🗺️ USDA Zone

Zone 9b

📆 Growing Season

303 days in Sumter County

Growing Tips for Bitter Melon in Sumter County

Direct sow Bitter Melon outdoors after February 06 in Sumter County when soil has warmed and frost danger has passed.

Sandy soil in Sumter County dries quickly — mulch Bitter Melon with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.

With summer highs reaching 96°F in Sumter County, provide afternoon shade for Bitter Melon and water deeply in the morning.

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 Sumter County, FL?

Sumter County is in Zone 9b with an average last frost of February 6. Plan your Bitter Melon planting based on this frost date — see the calendar above for exact timing.

What planting zone is Sumter County, FL?

Sumter County, Florida is in USDA Hardiness Zone 9b. The average last spring frost is February 6 and first fall frost is December 6.

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Your Sumter County Garden Planner — Free

A 24-page printable planner built for Sumter County (Zone 9b). 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 Sumter County, FL. Local conditions may vary. Last updated: May 2026.

Sources & credits

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