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When to plant Winter Melon in Sacramento County County,

Plant Winter Melon in Sacramento County County, when soil hits 50°F — usually February 12. Continue planting through March 5 for the spring crop.

When to Plant Winter Melon in Sacramento County, CA

Sacramento County, California Zone 9b June

Your June planting checklist for Sacramento County, California

Welcome to June in Zone 9b. These are the moves that will have the biggest impact on your growing season.

Avg. last frost February 12
Avg. first frost December 1
Soil temp (4") 87°F
Watering Critical
Pest pressure High
Daylight 14.7 hrs
  1. Start harvesting winter melon

    This is the payoff month. Bring a basket, bring a friend, and get into the beds.

Looking ahead to July
  • First harvests: winter melon

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Winter melon (wax gourd) is a large Asian squash with a waxy white coating that allows long storage. The mild flesh is used in soups and stir-fries.

Sacramento County, California is in USDA Zone 9b. The average last spring frost is February 12 and the first fall frost is December 1, giving you a growing season of approximately 292 days.

At an elevation of 263 feet, Sacramento County receives approximately 33.2 inches of rainfall annually with predominantly loam soil. Summer highs average 90°F, providing good warmth for Winter Melon during the growing season.

Sacramento County, CA (Zone 9b) Year-round
292 days
Last Spring Frost February 12
292 growing days
First Fall Frost December 1

Sacramento County Soil Profile

Soil Type

Loam

Soil pH

6.4-7.1

Drainage

Well Drained

Winter Melon Planting Risk Windows

Early Start (70% safe) ✓ Fits season (156 days to spare)
Start indoors: Dec 15 Transplant: Feb 2 🍅 Harvest: May 4 – Jun 22
Recommended (50%) ✓ Fits season (145 days to spare)
Start indoors: Jan 1 Transplant: Feb 19 🍅 Harvest: May 21 – Jul 9
Safe Start (90%) ✓ Fits season (111 days to spare)
Start indoors: Feb 23 Transplant: Apr 13 🍅 Harvest: Jul 13 – Aug 31

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 Sacramento County

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

Soil pH

Your soil pH (6.4–7.1) overlaps with Winter Melon's range (6.0–7.0), though not a perfect match.

Soil Texture

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

Organic Matter

Organic matter is moderate (2.4%). Annual compost additions will help Winter Melon.

How to Plant Winter Melon

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

Winter Melon Water Budget

Plant needs
1.0″/week
Rainfall provides
0.5″/week
You supply
0.6″/week
Watering frequency 1-2 times/week
Season total 1,640 gal / 100 sq ft
Drought risk

Water stress score is 8/10 — consider drought-tolerant varieties and mulching

Monthly Watering Guide for Winter Melon

Winter 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 Winter Melon Needs Rainfall You Supplement Action
Jan 6.1" 0" ❄️ Dormant
Feb 4.3" 7.5" 0" ✅ Rainfall sufficient
Mar 4.3" 5.7" 0" ✅ Rainfall sufficient
Apr 4.3" 2.5" 1.8" 💧 Light watering
May 4.3" 0.8" 3.5" 🚿 Regular watering
Jun 4.3" 0.2" 4.1" 🚿 Regular watering
Jul 4.3" 0" 4.3" 🚿 Regular watering
Aug 4.3" 0" 4.3" 🚿 Regular watering
Sep 4.3" 0.3" 4" 🚿 Regular watering
Oct 4.3" 1.4" 2.9" 🚿 Regular watering
Nov 4.3" 2.7" 1.6" 💧 Light watering
Dec 4.3" 5.9" 0" ✅ Rainfall sufficient

Water needs are for active growing months only (Feb–Dec in Sacramento County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.

Winter 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.

Winter Melon needs ~1,838 GDD — county provides 5,127 GDD Excellent fit

Winter Melon Planting Timeline — Sacramento County, CA

Winter Melon Planting Calendar

Activity When Date Range
Start Indoors January 1 Jan 1 – Jan 15
Transplant Outdoors February 19 Feb 19 – Mar 5
Direct Sow February 12 Feb 12 – Mar 5
Harvest May 21 May 21 – Jul 9

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · 1-2 times/week

📅 Days to Maturity

90–120 days

🧪 Soil pH

Needs 6–7 · Your soil: acceptable

🗺️ USDA Zone

Zone 9b

📆 Growing Season

292 days in Sacramento County

Growing Tips for Winter Melon in Sacramento County

Direct sow Winter Melon outdoors after February 12 in Sacramento County when soil has warmed and frost danger has passed.

Common pests for Winter 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 early. Provide ample space for sprawling vines. Harvest when the waxy coating develops on the rind. Fruits can weigh 15-30 pounds.

Companion Planting

Good Companions

Avoid Planting Near

  • Potatoes

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Winter Melon in Sacramento County, CA?

Sacramento County is in Zone 9b with an average last frost of February 12. Plan your Winter Melon planting based on this frost date — see the calendar above for exact timing.

What planting zone is Sacramento County, CA?

Sacramento County, California is in USDA Hardiness Zone 9b. The average last spring frost is February 12 and first fall frost is December 1.

When should I plant Winter Melon in Sacramento County County, ?

In Sacramento County County, , plant Winter Melon after the last frost (around February 12) and before the first frost (around December 1). Best results when soil holds above 50°F.

What growing zone is Sacramento County County, for Winter Melon?

Sacramento County County sits in USDA Zone 9b. Winter Melon grows reliably in zones 5a through 11b, so it's a good fit here.

Can Winter Melon grow in Sacramento County County's climate?

Yes — Winter Melon grows well in Sacramento County County's temperate climate. Sacramento County County averages a 293-day frost-free season, with last frost around February 12 and first frost around December 1.

🌱

Your Sacramento County Garden Planner — Free

A 22-page printable planner built for Sacramento 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 Sacramento County, CA. 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.