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When to Plant Chinese Cabbage in Onondaga County, NY

Onondaga County, New York Zone 6a May

May in the garden — Onondaga County, New York

We've pulled the most time-sensitive tasks for Onondaga County, New York this May and put them front and centre. Tackle them in order.

Avg. last frost May 8
Avg. first frost October 14
Soil temp (4") 60°F
Watering Low
Pest pressure Low
Daylight 14.5 hrs
  1. Time to transplant chinese cabbage

    Frost risk is low now in Onondaga County, New York. If you've been covering beds overnight, you can stop.

Before June arrives, get these ready
  • Starting indoors: chinese cabbage

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Chinese cabbage (Napa cabbage) forms elongated, barrel-shaped heads with tender, mild-flavored leaves. It is a staple in Asian cooking, particularly for kimchi.

Onondaga County, New York is in USDA Zone 6a. The average last spring frost is May 8 and the first fall frost is October 14, giving you a growing season of approximately 159 days.

At an elevation of 731 feet, Onondaga County receives approximately 45.1 inches of rainfall annually with predominantly silt loam soil. Summer highs average 83°F, so choose short-season varieties of Chinese Cabbage to ensure they mature before fall.

Onondaga County, NY (Zone 6a) Moderate season
159 days
Last Spring Frost May 8
159 growing days
First Fall Frost October 14

Onondaga County Soil Profile

Soil Type

Silt Loam

Soil pH

5.1-6.8

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (75 days to spare)
Start indoors: Mar 27 Transplant: May 1 🍅 Harvest: Jun 26 – Jul 24
Recommended (50%) ✓ Fits season (75 days to spare)
Start indoors: Apr 3 Transplant: May 8 🍅 Harvest: Jul 3 – Jul 31
Safe Start (90%) ✓ Fits season (75 days to spare)
Start indoors: Apr 17 Transplant: May 22 🍅 Harvest: Jul 17 – Aug 14

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 Onondaga County

How your county's soil matches Chinese Cabbage's growing requirements.

Soil pH

Your soil pH (5.1–6.8) is more acidic than Chinese Cabbage prefers (6.0–7.5). Add garden lime to raise pH.

Soil Texture

The silt loam soil in Onondaga County is excellent for Chinese Cabbage — good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is moderate (3.1%). Annual compost additions will help Chinese Cabbage.

How to Plant Chinese Cabbage

1"
Planting Depth
15"
Between Plants
24"
Between Rows

Fall planting: Sow 10 weeks before your first frost date for a fall harvest.

Succession Planting Chinese Cabbage

3
successive plantings in your 159-day season

Sow every 5.7 weeks. Last sowing by Aug 05 to harvest before frost.

For a dedicated fall crop, sow by Aug 05.

Plant Water Budget

Plant needs
1.5″/week
Rainfall provides
1.2″/week
You supply
0.3″/week
Watering frequency 1-2 times/week
Season total 437 gal / 100 sq ft

Monthly Watering Guide for Chinese Cabbage

Chinese Cabbage needs approximately 1.5 inches of water per week (6.5" per month). Here's how your county's rainfall compares month by month.

Month Chinese Cabbage Needs Rainfall You Supplement Action
Jan 3.3" 0" ❄️ Dormant
Feb 3.1" 0" ❄️ Dormant
Mar 3.8" 0" ❄️ Dormant
Apr 3.9" 0" ❄️ Dormant
May 6.5" 4.5" 2" 💧 Light watering
Jun 6.5" 4.4" 2.1" 💧 Light watering
Jul 6.5" 4.8" 1.7" 💧 Light watering
Aug 6.5" 4.2" 2.3" 💧 Light watering
Sep 6.5" 3.2" 3.3" 🚿 Regular watering
Oct 6.5" 3.2" 3.3" 🚿 Regular watering
Nov 3.6" 0" ❄️ Dormant
Dec 3.2" 0" ❄️ Dormant

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

Chinese Cabbage 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.

Chinese Cabbage needs ~735 GDD — county provides 1,947 GDD Excellent fit

Chinese Cabbage Planting Timeline — Onondaga County, NY

Chinese Cabbage Planting Calendar

Activity When Date Range
Start Indoors April 3 Apr 3 – Apr 17
Transplant Outdoors May 8 May 8 – May 22
Direct Sow April 24 Apr 24 – May 15
Harvest July 3 Jul 3 – Jul 31
Fall Sowing August 5 Aug 5 – Aug 19

Plant 1" deep · 15" apart · Rows 24" apart

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Partial Shade (3-6 hours)

💧 Water

1.5"/week · 1-2 times/week

📅 Days to Maturity

50–70 days

🧪 Soil pH

Needs 6–7.5 · Your soil: too_acidic

🗺️ USDA Zone

Zone 6a

📆 Growing Season

159 days in Onondaga County

Growing Tips for Chinese Cabbage in Onondaga County

Direct sow Chinese Cabbage outdoors after May 08 in Onondaga County when soil has warmed and frost danger has passed.

Common pests for Chinese Cabbage in this region include cabbage worm and flea beetles. Use row covers early in the season and inspect plants weekly.

General growing tips

Best grown as a fall crop to avoid bolting. Start seeds indoors or direct sow in late summer. Keep soil consistently moist and provide shade in warm weather.

Companion Planting

Good Companions

Avoid Planting Near

  • Strawberries
  • Tomatoes

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Chinese Cabbage in Onondaga County, NY?

Onondaga County is in Zone 6a with an average last frost of May 8. Plan your Chinese Cabbage planting based on this frost date — see the calendar above for exact timing.

What planting zone is Onondaga County, NY?

Onondaga County, New York is in USDA Hardiness Zone 6a. The average last spring frost is May 8 and first fall frost is October 14.

🌱

Your Onondaga County Garden Planner — Free

A 24-page printable planner built for Onondaga 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 Onondaga County, NY. 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.