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When to Plant Pac Choi in Yukon-Koyukuk Census Area, AK

Yukon-Koyukuk Census Area, Alaska Zone 2a May

What to do in May

Your garden in Yukon-Koyukuk Census Area, Alaska is working on a schedule, even when you're not. Here's where you should be this May.

Avg. last frost May 29
Avg. first frost August 26
Soil temp (4") 43°F
Watering High
Pest pressure Low
Daylight 18.5 hrs
  1. Transplant pac choi outside

    Harden off for 7 days — a little more sun each day — before planting. That's the difference between a seedling that thrives and one that stalls.

  2. Put pac choi seeds straight in the ground

    Mark the row. Birds and stray feet both have opinions about unmarked beds.

To set up a strong June, finish these tasks
  • Fall sowing: pac choi

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Pac choi (baby bok choy) is a compact variety of Chinese cabbage with tender leaves and crisp stems. It grows quickly and is ideal for containers and small spaces.

Yukon-Koyukuk Census Area, Alaska is in USDA Zone 2a. The average last spring frost is May 29 and the first fall frost is August 26, giving you a growing season of approximately 89 days.

At an elevation of 2,163 feet, Yukon-Koyukuk Census Area receives approximately 55.8 inches of rainfall annually with predominantly silt loam soil. Summer highs average 69°F, so choose short-season varieties of Pac Choi to ensure they mature before fall. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Pac Choi root diseases.

Yukon-Koyukuk Census Area, AK (Zone 2a) Very short season
89 days
Last Spring Frost May 29
89 growing days
First Fall Frost August 26

Yukon-Koyukuk Census Area Soil Profile

Soil Type

Silt Loam

Soil pH

5-6.5

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (19 days to spare)
Start indoors: Apr 9 Transplant: May 21 🍅 Harvest: Jul 2 – Jul 30
Recommended (50%) ✓ Fits season (19 days to spare)
Start indoors: Apr 17 Transplant: May 29 🍅 Harvest: Jul 10 – Aug 7
Safe Start (90%) ✓ Fits season (14 days to spare)
Start indoors: May 1 Transplant: Jun 12 🍅 Harvest: Jul 24 – Aug 21

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 Yukon-Koyukuk Census Area

How your county's soil matches Pac Choi's growing requirements.

Soil pH

Your soil pH (5.0–6.5) is more acidic than Pac Choi prefers (6.0–7.5). Add garden lime to raise pH.

Soil Texture

The silt loam soil in Yukon-Koyukuk Census Area is excellent for Pac Choi — good drainage, moisture retention, and nutrient holding capacity.

Drainage

Drainage is adequate for Pac Choi.

Organic Matter

Organic matter is excellent (5.8%) — Pac Choi will thrive.

How to Plant Pac Choi

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

Fall planting: Sow 12 weeks before your first frost date for a fall harvest.

Succession Planting Pac Choi

2
successive plantings in your 89-day season

Sow every 4.6 weeks. Last sowing by Jul 02 to harvest before frost.

For a dedicated fall crop, sow by Jun 03.

Plant Water Budget

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

Monthly Watering Guide for Pac Choi

Pac Choi 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 Pac Choi Needs Rainfall You Supplement Action
Jan 2.8" 0" ❄️ Dormant
Feb 2.2" 0" ❄️ Dormant
Mar 2.4" 0" ❄️ Dormant
Apr 1.8" 0" ❄️ Dormant
May 6.5" 2.4" 4.1" 🚿 Regular watering
Jun 6.5" 3.7" 2.8" 💧 Light watering
Jul 6.5" 6.8" 0" ✅ Rainfall sufficient
Aug 6.5" 7.8" 0" ✅ Rainfall sufficient
Sep 9.3" 0" ❄️ Dormant
Oct 8.2" 0" ❄️ Dormant
Nov 4.3" 0" ❄️ Dormant
Dec 4.1" 0" ❄️ Dormant

Water needs are for active growing months only (May–Aug in Yukon-Koyukuk Census Area). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.

Pac Choi 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.

Pac Choi needs ~83 GDD — county provides 155 GDD Excellent fit

Pac Choi Planting Timeline — Yukon-Koyukuk Census Area, AK

Pac Choi Planting Calendar

Activity When Date Range
Start Indoors April 17 Apr 17 – May 1
Transplant Outdoors May 29 May 29 – Jun 12
Direct Sow May 22 May 22 – Jun 12
Harvest July 10 Jul 10 – Aug 7
Fall Sowing June 3 Jun 3 – Jun 17

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Partial Shade (3-6 hours)

💧 Water

1.5"/week · Natural rainfall sufficient

📅 Days to Maturity

40–55 days

🧪 Soil pH

Needs 6–7.5 · Your soil: too_acidic

🗺️ USDA Zone

Zone 2a

📆 Growing Season

89 days in Yukon-Koyukuk Census Area

Growing Tips for Pac Choi in Yukon-Koyukuk Census Area

Direct sow Pac Choi outdoors after May 29 in Yukon-Koyukuk Census Area when soil has warmed and frost danger has passed.

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

General growing tips

Direct sow in spring or fall. Grows best in cool weather. Space 6 inches apart for baby pac choi. Harvest whole plants or cut outer leaves as needed.

Companion Planting

Good Companions

Avoid Planting Near

  • Strawberries

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Pac Choi in Yukon-Koyukuk Census Area, AK?

Yukon-Koyukuk Census Area is in Zone 2a with an average last frost of May 29. Plan your Pac Choi planting based on this frost date — see the calendar above for exact timing.

What planting zone is Yukon-Koyukuk Census Area, AK?

Yukon-Koyukuk Census Area, Alaska is in USDA Hardiness Zone 2a. The average last spring frost is May 29 and first fall frost is August 26.

🌱

Your Yukon-Koyukuk Census Area Garden Planner — Free

A 24-page printable planner built for Yukon-Koyukuk Census Area (Zone 2a). 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 Yukon-Koyukuk Census Area, AK. 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.