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When to Plant Chives in Kodiak Island Borough, AK

Kodiak Island Borough, Alaska Zone 6a April

Kodiak Island Borough, Alaska gardeners: here's your April plan

A quick April briefing for Kodiak Island Borough, Alaska gardeners — what's urgent, what's next, and what can wait.

Avg. last frost May 13
Avg. first frost September 29
Soil temp (4") 43°F
Watering Critical
Pest pressure Low
Daylight 14 hrs
Coming up in May — start thinking about
  • Transplants going out: chives

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Chives are a hardy perennial herb with a mild onion flavor and attractive purple pom-pom flowers. They are one of the easiest herbs to grow and maintain.

Kodiak Island Borough, Alaska is in USDA Zone 6a. The average last spring frost is May 13 and the first fall frost is September 29, giving you a growing season of approximately 139 days.

At an elevation of 2,281 feet, Kodiak Island Borough receives approximately 27.7 inches of rainfall annually with predominantly silt loam soil. Summer highs average 60°F, so choose short-season varieties of Chives to ensure they mature before fall.

Kodiak Island Borough, AK (Zone 6a) Short season
139 days
Last Spring Frost May 13
139 growing days
First Fall Frost September 29

Kodiak Island Borough Soil Profile

Soil Type

Silt Loam

Soil pH

5.1-6.5

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (7 days to spare)
Transplant: May 9 🍅 Harvest: Jul 11 – Sep 19
Recommended (50%) ✗ May not fit
Transplant: May 20 🍅 Harvest: Jul 22 – Sep 30
Safe Start (90%) ✓ Fits season (9 days to spare)
Transplant: Jun 1 🍅 Harvest: Aug 3 – Oct 12

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 Kodiak Island Borough

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

Soil pH

Your soil pH (5.1–6.5) is more acidic than Chives prefers (6.0–7.0). Add garden lime to raise pH.

Soil Texture

The silt loam soil in Kodiak Island Borough is excellent for Chives — good drainage, moisture retention, and nutrient holding capacity.

Drainage

Drainage is adequate for Chives.

Organic Matter

Organic matter is excellent (5.3%) — Chives will thrive.

How to Plant Chives

0.5"
Planting Depth
8"
Between Plants
12"
Between Rows

Succession Planting Chives

2
successive plantings in your 139-day season

Sow every 6.9 weeks. Last sowing by Jul 01 to harvest before frost.

Plant Water Budget

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

Monthly Watering Guide for Chives

Chives needs approximately 0.4 inches of water per week (1.7" per month). Here's how your county's rainfall compares month by month.

Month Chives Needs Rainfall You Supplement Action
Jan 1.5" 0" ❄️ Dormant
Feb 1.1" 0" ❄️ Dormant
Mar 1.2" 0" ❄️ Dormant
Apr 0.8" 0" ❄️ Dormant
May 1.7" 1.4" 0.3" 💧 Light watering
Jun 1.7" 2.4" 0" ✅ Rainfall sufficient
Jul 1.7" 3.2" 0" ✅ Rainfall sufficient
Aug 1.7" 4" 0" ✅ Rainfall sufficient
Sep 1.7" 5" 0" ✅ Rainfall sufficient
Oct 3.6" 0" ❄️ Dormant
Nov 1.9" 0" ❄️ Dormant
Dec 1.5" 0" ❄️ Dormant

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

Chives 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.

Chives needs ~0 GDD — county provides 0 GDD May not mature

Chives Planting Timeline — Kodiak Island Borough, AK

Chives Planting Calendar

Activity When Date Range
Transplant Outdoors May 20 May 20 – Jun 3
Harvest July 22 Jul 22 – Sep 30

Plant 0.5" deep · 8" apart · Rows 12" apart

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.4"/week · Natural rainfall sufficient

📅 Days to Maturity

60–90 days

🧪 Soil pH

Needs 6–7 · Your soil: too_acidic

🗺️ USDA Zone

Zone 6a

📆 Growing Season

139 days in Kodiak Island Borough

Growing Tips for Chives in Kodiak Island Borough

Direct sow Chives outdoors after May 13 in Kodiak Island Borough when soil has warmed and frost danger has passed.

Common pests for Chives in this region include onion maggots and thrips. Use row covers early in the season and inspect plants weekly.

General growing tips

Start from seed or divisions in spring. Cut back to 2 inches after flowering to encourage fresh growth. Both the leaves and flowers are edible and delicious.

Companion Planting

Good Companions

Avoid Planting Near

  • Peas
  • Green Beans

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Chives in Kodiak Island Borough, AK?

Kodiak Island Borough is in Zone 6a with an average last frost of May 13. Plan your Chives planting based on this frost date — see the calendar above for exact timing.

What planting zone is Kodiak Island Borough, AK?

Kodiak Island Borough, Alaska is in USDA Hardiness Zone 6a. The average last spring frost is May 13 and first fall frost is September 29.

🌱

Your Kodiak Island Borough Garden Planner — Free

A 24-page printable planner built for Kodiak Island Borough (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 Kodiak Island Borough, AK. Local conditions may vary. Last updated: April 2026.

Sources & credits

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