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When to plant Kabocha in Phillips County, KS

Plant Kabocha in Phillips County from May 6 to May 27 in spring. Phillips County sits in USDA Zone 6a, with last frost around April 29 and first frost on October 10.

When to Plant Kabocha in Phillips County, KS

Phillips County, Kansas Zone 6a July

July to-do list for Phillips County, Kansas

Each item below is timed to Phillips County, Kansas's frost dates and soil temperatures. Skip nothing, stress about nothing.

Avg. last frost April 29
Avg. first frost October 10
Soil temp (4") 77°F
Watering Low
Pest pressure High
Daylight 14.6 hrs
Looking ahead to August
  • First harvests: kabocha

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Kabocha is a Japanese winter squash with an exceptionally sweet, dense, chestnut-like flesh and dark green skin. It is a favorite in Asian cuisine for its rich, dry texture.

Phillips County, Kansas is in USDA Zone 6a. The average last spring frost is April 29 and the first fall frost is October 10, giving you a growing season of approximately 164 days.

At an elevation of 929 feet, Phillips County receives approximately 32.1 inches of rainfall annually with predominantly loam soil. Summer highs average 84°F, so choose short-season varieties of Kabocha to ensure they mature before fall.

Phillips County, KS (Zone 6a) Moderate season
164 days
Last Spring Frost April 29
164 growing days
First Fall Frost October 10

Phillips County Soil Profile

Soil Type

Loam

Soil pH

6.7-7.5

Drainage

Well Drained

Kabocha Planting Risk Windows

Early Start (70% safe) ✓ Fits season (34 days to spare)
Start indoors: Mar 18 Transplant: May 6 🍅 Harvest: Aug 5 – Sep 2
Recommended (50%) ✓ Fits season (31 days to spare)
Start indoors: Mar 25 Transplant: May 13 🍅 Harvest: Aug 12 – Sep 9
Safe Start (90%) ✓ Fits season (32 days to spare)
Start indoors: Apr 8 Transplant: May 27 🍅 Harvest: Aug 26 – Sep 23

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 Phillips County

How your county's soil matches Kabocha's growing requirements.

Soil pH

Your soil pH (6.7–7.5) is within Kabocha's preferred range (6.0–7.5).

Soil Texture

The loam soil in Phillips County is excellent for Kabocha — good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is excellent (4.3%) — Kabocha will thrive.

How to Plant Kabocha

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

Kabocha Water Budget

Plant needs
1.0″/week
Rainfall provides
0.8″/week
You supply
0.2″/week
Watering frequency Only during dry spells
Season total 312 gal / 100 sq ft
Drought risk

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

Monthly Watering Guide for Kabocha

Kabocha needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.

Month Kabocha Needs Rainfall You Supplement Action
Jan 0.9" 0" ❄️ Dormant
Feb 1.2" 0" ❄️ Dormant
Mar 2.2" 0" ❄️ Dormant
Apr 4.3" 3.8" 0.5" 💧 Light watering
May 4.3" 5.1" 0" ✅ Rainfall sufficient
Jun 4.3" 5.4" 0" ✅ Rainfall sufficient
Jul 4.3" 3.8" 0.5" 💧 Light watering
Aug 4.3" 3.2" 1.1" 💧 Light watering
Sep 4.3" 3" 1.3" 💧 Light watering
Oct 4.3" 1.7" 2.6" 🚿 Regular watering
Nov 1.1" 0" ❄️ Dormant
Dec 0.8" 0" ❄️ Dormant

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

Kabocha 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.

Kabocha needs ~1,202 GDD — county provides 2,132 GDD Excellent fit

Kabocha Planting Timeline — Phillips County, KS

Kabocha Planting Calendar

Activity When Date Range
Start Indoors March 25 Mar 25 – Apr 8
Transplant Outdoors May 13 May 13 – May 27
Direct Sow May 6 May 6 – May 27
Harvest August 12 Aug 12 – Sep 9

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
July
August Harvest
September Harvest
October
November
December

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · Only during dry spells

📅 Days to Maturity

85–100 days

🧪 Soil pH

Needs 6–7.5 · Your soil: ideal

🗺️ USDA Zone

Zone 6a

📆 Growing Season

164 days in Phillips County

Growing Tips for Kabocha in Phillips County

Direct sow Kabocha outdoors after April 29 in Phillips County when soil has warmed and frost danger has passed.

Common pests for Kabocha in this region include squash vine borer and cucumber beetles. Use row covers early in the season and inspect plants weekly.

General growing tips

Direct sow after frost or start indoors. Harvest when the skin is hard and dull. The stem should be dry and corky. Stores well for 3-4 months in a cool, dry place.

Companion Planting

Good Companions

Avoid Planting Near

  • Potatoes

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Kabocha in Phillips County, KS?

Phillips County is in Zone 6a with an average last frost of April 29. Plan your Kabocha planting based on this frost date — see the calendar above for exact timing.

What planting zone is Phillips County, KS?

Phillips County, Kansas is in USDA Hardiness Zone 6a. The average last spring frost is April 29 and first fall frost is October 10.

When should I plant Kabocha in Phillips County, KS?

In Phillips County, KS, plant Kabocha after the last frost (around April 29) and before the first frost (around October 10). Best results when soil holds above 50°F.

What growing zone is Phillips County, KS for Kabocha?

Phillips County sits in USDA Zone 6a. Kabocha grows reliably in zones 3a through 11b, so it's a good fit here.

Can Kabocha grow in Phillips County's climate?

Yes — Kabocha grows well in Phillips County's temperate climate. Phillips County averages a 164-day frost-free season, with last frost around April 29 and first frost around October 10.

🌱

Your Phillips County Garden Planner — Free

A 22-page printable planner built for Phillips County (Zone 6a). 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 Phillips County, KS. Local conditions may vary. Last updated: July 2026.

Sources & credits

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