Kodiak Island Borough, AK — Planting Guide
Kodiak Island Borough 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 ft, Kodiak Island Borough receives approximately 27.7 in of rainfall annually. Summer highs average 60°F with winter lows around -14°F. The predominant soil type is Silt Loam.
Based on 31 years of NOAA climate station data, the last frost date here varies by 29 days year to year — ranging from April 26 in warm years to May 25 in cold years. The growing season is trending longer by about 4.07 days per decade. Kodiak Island Borough scores 53/100 (Moderate) on the Microclimate Index.
🌡️ Zone
6a (-10°F to -5°F min)
❄️ Last Frost
May 13
🍂 First Frost
September 29
📅 Growing Season
139 days
⛰️ Elevation
2,281 ft
🌧️ Annual Rainfall
27.7 in
Monthly Watering Calendar
When you'll need to water your garden — based on average monthly rainfall vs. the ~1 inch/week most gardens need.
View detailed monthly data
| Month | Avg Rainfall | Rainy Days | Extra Water Needed | Watering Effort |
|---|---|---|---|---|
| Jan | 1.5 in | 6 days | — | None |
| Feb | 1.1 in | 4 days | — | None |
| Mar | 1.2 in | 5 days | 3.1 in | Critical |
| Apr | 0.8 in | 4 days | 3.5 in | Critical |
| May | 1.4 in | 5 days | 2.9 in | High |
| Jun | 2.4 in | 8 days | 1.9 in | High |
| Jul | 3.2 in | 10 days | 1.1 in | Moderate |
| Aug | 4 in | 13 days | 0.3 in | Low |
| Sep | 5 in | 12 days | — | Low |
| Oct | 3.6 in | 10 days | 0.7 in | Moderate |
| Nov | 1.9 in | 8 days | — | None |
| Dec | 1.5 in | 6 days | — | None |
Annual total: 27.6 in. Gardens typically need ~1 inch of water per week during the growing season. Months marked "None" for extra water are outside the active growing season for your zone — most gardens are dormant and don't need irrigation during those months.
Kodiak Island Borough Soil Profile
Soil Type
Silt Loam
Soil pH
5.1-6.5
Drainage
Well Drained
Frost Risk Probability
Based on 31 years of NOAA weather station data from 3 stations
Beginners: Plant frost-sensitive crops (tomatoes, peppers, squash) after the "Safe" date on the left. Harvest or cover them before the "Protect by" date on the right. Hardy crops (lettuce, peas, kale) can go in the yellow transition zones.
How to read this table: "Conservative" means you're safe from frost 9 out of 10 years — best for beginners and frost-sensitive crops. "Average year" is the typical date. "Aggressive" means only 1 in 10 years is that warm — experienced gardeners with frost protection can try these dates.
| Planting Strategy | Last Spring Frost | First Fall Frost | Frost-Free Days |
|---|---|---|---|
| Conservative (safest) | May 25 | Oct 21 | 149 days |
| Cautious | May 18 | Oct 7 | 142 days |
| Average year | May 13 | Sep 29 | 139 days |
| Optimistic | May 2 | Sep 26 | 147 days |
| Aggressive (risky) | Apr 26 | Sep 19 | 146 days |
Not very — frost dates can vary by ±29 days year-to-year. Use the "Conservative" row in the table below, and keep row covers handy for surprise late frosts.
Yes — growing seasons are getting longer here (about 4.1 days per decade). Spring is arriving earlier than it used to. Good news for gardeners.
Gardening Difficulty Score
Kodiak Island Borough presents some gardening challenges. Choose adapted varieties and plan around frost dates.
Local Gardening Help in Kodiak Island Borough
Free expert help is closer than you think. Your county's cooperative extension office connects you with trained gardeners, soil testing labs, and local programs — all specific to Kodiak Island Borough's climate and soil.
County Extension Office
Kodiak Island Borough University of Alaska Fairbanks Cooperative Extension Extension Office
Phone: 907-474-5211
Visit Extension Office Website →
Extension offices are run by land-grant universities and funded by the USDA. Their advice is free, research-based, and tailored to your county's specific conditions.
Master Gardener Program
Free gardening help from trained volunteers
Master Gardeners are community volunteers who complete 40–60 hours of university horticultural training. They answer gardening questions, diagnose plant problems, and offer workshops — all free.
Many extension offices run a Master Gardener hotline where you can call or email with photos of plant problems for free diagnosis.
Soil Testing
Available through your extension office
Before amending your soil, get it tested. Your extension office offers soil testing (typically $10–$25) that tells you exact pH, nutrient levels, and amendment recommendations specific to what you want to grow.
Services Available in Kodiak Island Borough
Finding local nurseries & garden centers in Kodiak Island Borough
Why Buy Local
Local nurseries carry plants that are proven to grow in your area. Staff can give you advice specific to Kodiak Island Borough's soil and climate that big-box stores can't. Plants from local growers are typically hardier because they're already acclimated to your zone.
How to Find Them
Search for "nurseries near Kodiak Island Borough AK" or "garden center Kodiak Island Borough" on Google Maps. Also check with your extension office — they often maintain lists of reputable local nurseries and plant sales.
Community gardens & gardening groups
Community gardens are a great way to learn from experienced gardeners in your area, especially if you're limited on space. Search "community garden Kodiak Island Borough AK" or check your extension office and local parks department. Facebook groups like "Kodiak Island Borough Gardeners" or "Alaska Gardening" are also excellent for local advice and plant swaps.
What to Plant After Your Harvest
After your first crops finish, use the remaining frost-free days to grow a second round.
Show 6 more succession options
Sunlight & Day Length
Monthly daylight hours and peak sun — critical for onion varieties, photoperiod-sensitive plants, and solar garden planning.
Longest Day
17.7 hours
Summer solstice daylight
Shortest Day
6.3 hours
Winter solstice daylight
Peak Sun Hours
8.9 hr/day peak (summer)
Peak sun hours (green dashed line below) account for cloud cover — this is the usable direct sunlight your garden actually receives. Most vegetables need 6+ peak sun hours.
Onion tip: Your long summer days (14+ hours) support long-day onion varieties like Walla Walla, Sweet Spanish, and Ailsa Craig.
View detailed monthly data
| Month | Daylight Hours | Peak Sun Hours | Day Length |
|---|---|---|---|
| January | 7 hr | 2.2 hr | Short day |
| February | 9.1 hr | 3.2 hr | Short day |
| March | 11.4 hr | 4.6 hr | Short day |
| April | 14 hr | 6 hr | Long day |
| May | 16.3 hr | 7.7 hr | Long day |
| June | 17.7 hr | 8.9 hr | Long day |
| July | 17.1 hr | 8.4 hr | Long day |
| August | 15 hr | 6.6 hr | Long day |
| September | 12.5 hr | 5.2 hr | Neutral |
| October | 9.9 hr | 3.3 hr | Short day |
| November | 7.6 hr | 2.2 hr | Short day |
| December | 6.3 hr | 1.6 hr | Short day |
Peak sun hours factor in typical cloud cover — use these for solar panel and shade-planning calculations.
Soil Temperature & Composting Calendar
Monthly soil temps tell you when to plant warm-season crops, and when your compost pile is actively working.
Plant Warm Crops When
Soil reaches 60°F+
Soil warm enough from Jun through Sep.
Best Month to Compost
Jun
Microbial activity peaks when soil is warm.
Active Composting
6 months
Solid season. Piles go dormant in winter.
View detailed monthly data
| Month | Soil 4" Deep | Soil 8" Deep | Compost Activity | Time to Finish |
|---|---|---|---|---|
| Jan | 25°F | 32°F | ❄️ Dormant | ~36 weeks |
| Feb | 23°F | 29°F | ❄️ Dormant | ~36 weeks |
| Mar | 34°F | 37°F | ❄️ Dormant | ~36 weeks |
| Apr | 43°F | 43°F | 🐢 Slow | ~24 weeks |
| May | 58°F | 52°F | ♻️ Active | ~14 weeks |
| Jun | 68°F | 62°F | 🔥 Peak | ~8 weeks |
| Jul | 73°F | 68°F | 🔥 Peak | ~8 weeks |
| Aug | 74°F | 71°F | 🔥 Peak | ~8 weeks |
| Sep | 69°F | 66°F | 🔥 Peak | ~8 weeks |
| Oct | 57°F | 58°F | ♻️ Active | ~14 weeks |
| Nov | 41°F | 49°F | 🐢 Slow | ~24 weeks |
| Dec | 29°F | 38°F | ❄️ Dormant | ~36 weeks |
Highlighted rows = soil 60°F+ (safe for warm-season transplants). Compost finishes fastest during peak activity months.
Pest & Disease Pressure in Kodiak Island Borough
Computed from local climate patterns — warmer, humid conditions increase pest generations and fungal disease risk.
Insect Pest Pressure
Moderate — common pests appear but manageable with monitoring.
Disease Risk
Low disease risk — dry conditions reduce fungal problems.
Seasonal Risk
View 6 common pests in your area
| Pest | Risk Level | Peak Months |
|---|---|---|
| Aphids | Moderate | Apr, May, Jun, Jul, Aug, Sep |
| Japanese beetles | Moderate | Jun, Jul, Aug |
| Squash vine borers | Moderate | Jun, Jul |
| Tomato hornworms | Moderate | Jun, Jul, Aug |
| Cucumber beetles | Low | May, Jun, Jul |
| Stink bugs | Low | Jun, Jul, Aug, Sep |
Organic pest management tips
- Maintain healthy soil with regular compost additions to build natural pest resistance
- Practice crop rotation annually to break pest cycles
- Encourage beneficial insects with flowering herbs like dill, fennel, and yarrow
Cover Crops for Kodiak Island Borough
Cover crops protect bare soil, fix nitrogen, suppress weeds, and improve soil structure — with county-specific planting dates.
Fall Cover Crops (7 options) — Plant after harvest to protect soil over winter
| Crop | Plant By | Terminate | N-Fixing | Soil Benefit |
|---|---|---|---|---|
| Austrian winter peas | Jul 26 | Apr 29 | ✓ Yes | Fixes nitrogen, good for heavy clay soils |
| Crimson clover | Aug 6 | Apr 29 | ✓ Yes | Fixes nitrogen, attracts pollinators in spring |
| Daikon radish | Aug 12 | Apr 29 | — | Deep taproot breaks compaction, excellent for clay soils |
| Hairy vetch | Jul 21 | Apr 22 | ✓ Yes | Excellent nitrogen fixer, good for depleted soils |
| Oats | Aug 26 | Apr 22 | — | Quick biomass, winterkills in cold zones — no spring tillage needed |
| Winter rye | Jul 6 | Apr 29 | — | Suppresses weeds, prevents erosion, breaks up compacted soil |
| Winter wheat | Jul 6 | Apr 22 | — | Erosion control, weed suppression, good biomass |
Spring Cover Crops (3 options) — Build soil before the main growing season
| Crop | Plant By | Terminate | N-Fixing | Soil Benefit |
|---|---|---|---|---|
| Buckwheat | May 20 | Jul 21 | — | Rapid growth, attracts pollinators, suppresses weeds |
| Sorghum-sudan grass | May 16 | Jul 21 | — | Massive biomass, breaks compaction, suppresses nematodes |
| White clover | Apr 15 | Jul 21 | ✓ Yes | Living mulch, fixes nitrogen, permanent ground cover |
Summer Cover Crops (1 options) — Fill gaps and suppress weeds between plantings
| Crop | Plant By | Terminate | N-Fixing | Soil Benefit |
|---|---|---|---|---|
| Sunflowers | May 28 | Sep 8 | — | Deep roots break compaction, attract pollinators and beneficial insects |
Wind & Microclimate
Wind dries soil, stresses plants, and affects frost patterns. Understanding your exposure helps with garden placement.
Seasonal Wind Speed
Spring: 12 mph Summer: 8 mph
Fall: 9 mph Winter: 11 mph
Prevailing wind: N. Moderate wind — consider a temporary windbreak for young seedlings.
Windbreak Benefit
5.4/10
Moderately beneficial — a simple fence or trellis can protect delicate crops from wind stress.
Frost Pocket Risk
High
Hilly terrain with 1,179 ft of elevation range — cold air pools in low spots. Avoid planting frost-sensitive crops in valleys.
Rainwater Harvesting Potential
How much water you can collect, when to collect it, and what size system you need for your garden.
Annual Collection
13,755 gal
Per 1,000 sq ft of roof area (at 80% collection efficiency)
Recommended Setup
7 rain barrels (55 gal each)
For a typical 500 sq ft garden. Serious collectors: consider a 1,000 gal tank.
Legal Status
Unrestricted
Rainwater harvesting is fully legal in your state with no restrictions.
Best Collection Months
Jul, Aug, Sep, Oct
Highest rainfall months — your barrels will fill up quickly during these months.
Months to Draw From Storage
Apr
Dry months when you'll rely on stored water — size your storage for this gap.
Rainwater collection tips for your area
- Your county receives approximately 27.6 inches of rain per year
- A 1,000 sq ft roof can collect roughly 13,755 gallons annually
- Rainwater harvesting is fully legal in your state
- Use a first-flush diverter to keep roof debris out of your collection
Soil & Growing Conditions in Kodiak Island Borough
Soil Type
Silt Loam
Soil pH 5.1–6.5 · Somewhat Poorly Drained drainage
Raised beds strongly recommended here — native soil drainage or texture limits in-ground options.
Watering Needs
Drought stress: 1.5/10
Kodiak Island Borough has very low drought pressure. Natural rainfall usually meets garden needs — water only during extended dry spells.
Season Tips
139-day frost-free season
Start warm-season crops indoors and focus on short-season varieties. Cold frames extend your season by 3–4 weeks in fall.
Free Garden Planner
Plan your entire garden season — organize planting dates, track what you're growing, and know exactly when to start seeds, transplant, and harvest.
Recommended for Your Garden
Test your soil pH, nitrogen, phosphorus, and potassium levels before planting.
Get instant, accurate soil pH readings to fine-tune your amendments.
Boost soil fertility and structure with rich, well-aged organic compost.
🥬 Vegetables to Grow in Kodiak Island Borough
108 vegetables that grow well in Zone 6a with planting dates for Kodiak Island Borough.
Show all 108 vegetables with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Harvest | Days to Maturity |
|---|---|---|---|---|---|
| Acorn Squash | Apr 8 | May 20 | May 27 | Aug 19 – Sep 23 | 80–100 |
| Amaranth | Mar 18 | May 20 | May 27 | Aug 26 – Oct 14 | 90–120 |
| Arugula | Apr 8 | Apr 29 | May 13 | Jun 17 – Aug 19 | 30–50 |
| Asparagus | — | — | May 27 | — | 730–1095 |
| Beets | — | Apr 29 | — | Jun 24 – Jul 22 | 50–70 |
| Belgian Endive | Apr 8 | Apr 29 | May 13 | Sep 2 – Oct 28 | 110–150 |
| Bitter Melon | Mar 18 | May 20 | May 27 | Jul 29 – Sep 9 | 60–90 |
| Black Beans | — | May 20 | — | Aug 19 – Oct 7 | 90–120 |
| Bok Choy | Apr 8 | Apr 29 | May 13 | Jun 24 – Jul 29 | 40–60 |
| Broccoli | Apr 8 | Apr 29 | May 13 | Jul 15 – Aug 26 | 60–90 |
| Broccoli Rabe | Apr 8 | Apr 29 | May 13 | Jun 24 – Jul 29 | 40–60 |
| Brussels Sprouts | Apr 8 | Apr 29 | May 13 | Aug 12 – Oct 7 | 90–130 |
| Butternut Squash | Apr 8 | May 20 | May 27 | Aug 26 – Sep 30 | 85–110 |
| Cabbage | Apr 8 | Apr 29 | May 13 | Jul 15 – Sep 9 | 60–100 |
| Calabash | Mar 18 | May 20 | May 27 | Aug 19 – Oct 14 | 80–120 |
| Carrots | — | Apr 29 | — | Jul 1 – Aug 5 | 60–80 |
| Cauliflower | Apr 8 | Apr 29 | May 13 | Jul 8 – Sep 9 | 55–100 |
| Celeriac | Apr 8 | Apr 29 | May 13 | Aug 26 – Sep 30 | 100–120 |
| Celery | Apr 8 | Apr 29 | May 13 | Aug 5 – Sep 30 | 80–120 |
| Celtuce | Apr 8 | Apr 29 | May 13 | Jul 15 – Aug 26 | 60–90 |
| Chard | Apr 8 | Apr 29 | May 13 | Jul 8 – Aug 26 | 50–60 |
| Chickpeas | Apr 8 | Apr 29 | May 13 | Aug 5 – Sep 16 | 80–110 |
| Chicory | Apr 8 | Apr 29 | May 13 | Jul 15 – Aug 26 | 60–85 |
| Chinese Cabbage | Apr 8 | Apr 29 | May 13 | Jul 8 – Aug 5 | 50–70 |
| Christmas Lima Beans | Mar 18 | May 20 | May 27 | Aug 19 – Sep 23 | 80–100 |
| Collard Greens | Apr 8 | Apr 29 | May 13 | Jul 8 – Sep 9 | 55–75 |
| Corn | — | May 20 | — | Jul 22 – Sep 16 | 60–100 |
| Cowpeas | — | May 20 | — | Jul 22 – Sep 2 | 60–90 |
| Cress | Apr 8 | Apr 29 | May 13 | May 27 – Jun 17 | 14–21 |
| Crookneck Squash | Apr 8 | May 20 | May 27 | Jul 15 – Aug 12 | 45–60 |
| Crosne | — | Apr 29 | — | Sep 30 – Nov 11 | 150–200 |
| Cucumber | Apr 8 | May 20 | May 27 | Jul 22 – Sep 16 | 50–70 |
| Daikon | — | Apr 29 | — | Jun 24 – Jul 22 | 50–70 |
| Delicata Squash | Apr 8 | May 20 | May 27 | Aug 19 – Sep 23 | 80–100 |
| Edamame | — | May 20 | — | Aug 5 – Sep 16 | 75–100 |
| Eggplant | Mar 4 | May 20 | May 27 | Aug 5 – Oct 7 | 65–85 |
| Endive | Apr 8 | Apr 29 | May 13 | Jul 1 – Aug 5 | 45–65 |
| Escarole | Apr 8 | Apr 29 | May 13 | Jul 8 – Aug 5 | 50–70 |
| Fava Beans | Apr 8 | Apr 29 | May 13 | Jul 29 – Sep 9 | 75–100 |
| Fennel | Mar 18 | May 20 | May 27 | Jul 29 – Sep 9 | 60–90 |
| Garlic | — | — | — | — | 90–240 |
| Green Beans | — | May 20 | — | Jul 15 – Sep 9 | 50–65 |
| Horseradish | — | — | May 27 | Sep 30 – Dec 9 | 120–180 |
| Hot Peppers | Mar 4 | May 20 | May 27 | Aug 5 – Nov 11 | 70–120 |
| Hubbard Squash | Apr 8 | May 20 | May 27 | Sep 9 – Oct 14 | 100–120 |
| Kabocha | Apr 8 | May 20 | May 27 | Aug 26 – Sep 23 | 85–100 |
| Kai Lan | Apr 8 | Apr 29 | May 13 | Jul 1 – Jul 29 | 45–60 |
| Kale | Apr 8 | Apr 29 | May 13 | Jul 8 – Sep 2 | 50–70 |
| Kidney Beans | — | May 20 | — | Aug 19 – Sep 23 | 85–110 |
| Kohlrabi | Apr 8 | Apr 29 | May 13 | Jul 1 – Aug 5 | 45–65 |
| Komatsuna | Apr 8 | Apr 29 | May 13 | Jun 17 – Jul 22 | 35–50 |
| Leeks | Apr 8 | Apr 29 | May 13 | Aug 12 – Oct 28 | 90–150 |
| Lentils | Apr 8 | Apr 29 | May 13 | Aug 5 – Sep 16 | 80–110 |
| Lettuce | Apr 8 | Apr 29 | May 13 | Jun 17 – Aug 26 | 30–60 |
| Lima Beans | — | May 20 | — | Jul 22 – Sep 2 | 60–90 |
| Loofah | Mar 18 | May 20 | May 27 | Sep 9 – Nov 11 | 100–150 |
| Luffa | Mar 18 | May 20 | May 27 | Aug 26 – Nov 11 | 90–150 |
| Mache | Apr 8 | Apr 29 | May 13 | Jun 24 – Jul 29 | 40–60 |
| Melon | Apr 8 | May 20 | May 27 | Aug 5 – Sep 23 | 70–100 |
| Microgreens | Apr 8 | Apr 29 | May 13 | May 20 – Jun 17 | 7–21 |
| Mitsuba | Apr 8 | Apr 29 | May 6 | Jul 1 – Aug 26 | 50–70 |
| Mizuna | Apr 8 | Apr 29 | May 13 | Jun 17 – Jul 15 | 30–45 |
| Mustard Greens | Apr 8 | Apr 29 | May 13 | Jun 17 – Aug 19 | 30–50 |
| Napa Cabbage | Apr 8 | Apr 29 | May 13 | Jul 8 – Aug 12 | 55–75 |
| New Zealand Spinach | Mar 18 | May 20 | May 27 | Jul 22 – Aug 19 | 55–70 |
| Okra | Mar 18 | May 20 | May 27 | Jul 22 – Sep 16 | 50–65 |
| Onion | Apr 8 | Apr 29 | May 13 | Aug 12 – Sep 30 | 90–120 |
| Pac Choi | Apr 8 | Apr 29 | May 13 | Jun 24 – Jul 22 | 40–55 |
| Parsnip | — | Apr 29 | — | Aug 12 – Sep 23 | 100–130 |
| Patty Pan Squash | Apr 8 | May 20 | May 27 | Jul 15 – Aug 12 | 45–60 |
| Peas | Apr 8 | Apr 29 | May 13 | Jul 8 – Sep 2 | 55–70 |
| Peppers | Mar 4 | May 20 | May 27 | Jul 29 – Oct 7 | 60–90 |
| Pole Beans | Mar 18 | May 20 | May 27 | Jul 22 – Sep 16 | 55–70 |
| Potatoes | Mar 18 | May 20 | May 27 | Aug 5 – Oct 14 | 70–120 |
| Pumpkin | Apr 8 | May 20 | May 27 | Aug 26 – Oct 14 | 85–120 |
| Purslane | Apr 8 | Apr 29 | May 13 | Jun 24 – Jul 29 | 40–60 |
| Radicchio | Apr 8 | Apr 29 | May 13 | Jul 15 – Aug 19 | 60–80 |
| Radish | — | Apr 29 | — | May 27 – Jun 17 | 22–35 |
| Rhubarb | — | — | Jun 3 | — | 365–730 |
| Romanesco | Apr 8 | Apr 29 | May 13 | Jul 29 – Sep 9 | 75–100 |
| Rutabaga | — | Apr 29 | — | Jul 22 – Aug 26 | 80–100 |
| Salsify | — | Apr 29 | — | Aug 12 – Sep 23 | 100–130 |
| Savoy Cabbage | Apr 8 | Apr 29 | May 13 | Jul 22 – Sep 16 | 70–110 |
| Scallions | Apr 8 | Apr 29 | May 13 | Jul 8 – Aug 5 | 50–70 |
| Scarlet Runner Beans | Mar 18 | May 20 | May 27 | Jul 29 – Sep 2 | 60–80 |
| Shallot | Apr 8 | Apr 29 | May 13 | Aug 12 – Sep 30 | 90–120 |
| Shiso | Mar 25 | May 20 | May 27 | Jul 22 – Sep 16 | 50–70 |
| Snap Peas | Mar 18 | May 20 | May 27 | Jul 22 – Sep 16 | 55–70 |
| Snow Peas | Apr 8 | Apr 29 | May 13 | Jul 8 – Sep 2 | 50–65 |
| Soybeans | — | May 20 | — | Aug 12 – Oct 7 | 80–120 |
| Spaghetti Squash | Apr 8 | May 20 | May 27 | Aug 26 – Sep 23 | 85–100 |
| Spinach | Apr 8 | Apr 29 | May 13 | Jun 17 – Aug 19 | 35–50 |
| Squash (Summer) | Apr 8 | May 20 | May 27 | Jul 15 – Sep 16 | 45–65 |
| Squash (Winter) | Apr 8 | May 20 | May 27 | Aug 19 – Oct 14 | 80–120 |
| Sunchoke | — | — | May 27 | Sep 16 – Nov 11 | 110–150 |
| Sunflower | Mar 18 | May 20 | May 27 | Aug 5 – Sep 23 | 70–100 |
| Sweet Corn | — | May 20 | — | Jul 22 – Sep 2 | 60–90 |
| Sweet Potatoes | Mar 18 | May 20 | May 27 | Aug 26 – Oct 14 | 90–120 |
| Tatsoi | Apr 8 | Apr 29 | May 13 | Jun 17 – Jul 22 | 35–50 |
| Tomatillo | Mar 18 | May 20 | May 27 | Jul 29 – Oct 7 | 60–85 |
| Tomatoes | Mar 18 | May 20 | May 27 | Jul 29 – Oct 7 | 60–85 |
| Turnip | — | Apr 29 | — | Jun 10 – Jul 15 | 40–60 |
| Watercress | Apr 8 | Apr 29 | May 13 | Jun 24 – Jul 29 | 40–60 |
| Watermelon | Apr 8 | May 20 | May 27 | Aug 5 – Sep 23 | 70–100 |
| Wax Beans | — | May 20 | — | Jul 15 – Sep 9 | 50–65 |
| Winter Melon | Mar 18 | May 20 | May 27 | Aug 26 – Oct 14 | 90–120 |
| Yard Long Beans | Mar 18 | May 20 | May 27 | Jul 22 – Sep 2 | 55–80 |
| Zucchini | Apr 8 | May 20 | May 27 | Jul 15 – Sep 9 | 45–60 |
🍓 Fruits to Grow in Kodiak Island Borough
27 fruits that grow well in Zone 6a with planting dates for Kodiak Island Borough.
Show all 27 fruits with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Harvest | Days to Maturity |
|---|---|---|---|---|---|
| Alpine Strawberries | — | — | Jun 3 | Sep 2 – Dec 16 | 90–180 |
| Aronia | — | — | Jun 3 | — | 730–1095 |
| Blackberries | — | — | Jun 3 | — | 365–730 |
| Blueberries | — | — | Jun 3 | — | 730–1095 |
| Boysenberries | — | — | Jun 3 | — | 365–730 |
| Cantaloupe | — | — | Jun 3 | Aug 12 – Sep 16 | 70–90 |
| Che Fruit | — | — | Jun 3 | — | 1095–1825 |
| Cranberries | — | — | Jun 3 | — | 730–1095 |
| Currants | — | — | Jun 3 | — | 730–1095 |
| Elderberries | — | — | Jun 3 | — | 730–1095 |
| Goji Berries | — | — | Jun 3 | — | 730–1095 |
| Gooseberries | — | — | Jun 3 | — | 730–1095 |
| Grapes | — | — | Jun 3 | — | 730–1095 |
| Ground Cherry | — | — | Jun 3 | Aug 12 – Oct 7 | 65–80 |
| Hardy Kiwi | — | — | Jun 3 | — | 1095–1825 |
| Haskaps | — | — | Jun 3 | — | 730–1095 |
| Honeydew | — | — | Jun 3 | Aug 26 – Oct 7 | 80–110 |
| Jostaberry | — | — | Jun 3 | — | 730–1095 |
| Lingonberries | — | — | Jun 3 | — | 730–1095 |
| Medlar | — | — | Jun 3 | — | 1095–1825 |
| Mulberries | — | — | Jun 3 | — | 730–1825 |
| Pawpaw | — | — | Jun 3 | — | 1095–2555 |
| Persimmon | — | — | Jun 3 | — | 1095–2555 |
| Quince | — | — | Jun 3 | — | 1095–1825 |
| Raspberries | — | — | Jun 3 | — | 365–730 |
| Serviceberries | — | — | Jun 3 | — | 730–1095 |
| Strawberries | — | — | Jun 3 | Sep 2 – Dec 16 | 90–365 |
🌿 Herbs to Grow in Kodiak Island Borough
38 herbs that grow well in Zone 6a with planting dates for Kodiak Island Borough.
Show all 38 herbs with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Harvest | Days to Maturity |
|---|---|---|---|---|---|
| Angelica | Apr 8 | Apr 29 | May 6 | — | 365–730 |
| Anise | Apr 8 | Apr 29 | May 6 | Aug 5 – Oct 21 | 90–120 |
| Basil | Mar 25 | May 20 | May 27 | Jul 22 – Sep 23 | 50–75 |
| Bee Balm | — | — | May 20 | Aug 19 – Nov 4 | 90–120 |
| Borage | Apr 8 | Apr 29 | May 6 | Jul 1 – Aug 19 | 50–60 |
| Caraway | Apr 8 | Apr 29 | May 6 | — | 365–450 |
| Catnip | — | — | May 20 | Jul 22 – Sep 23 | 60–80 |
| Chamomile | Apr 8 | Apr 29 | May 6 | Jul 8 – Sep 16 | 60–90 |
| Chervil | Apr 8 | Apr 29 | May 6 | Jun 17 – Aug 19 | 40–60 |
| Chives | — | — | May 20 | Jul 22 – Sep 30 | 60–90 |
| Cilantro | Apr 8 | Apr 29 | May 6 | Jun 17 – Aug 19 | 40–60 |
| Comfrey | — | — | May 20 | Jul 22 – Sep 30 | 60–90 |
| Cumin | Apr 8 | Apr 29 | May 6 | Aug 19 – Oct 21 | 100–120 |
| Dill | Apr 8 | Apr 29 | May 6 | Jun 17 – Aug 19 | 40–60 |
| Echinacea | — | — | May 20 | Sep 23 – Dec 2 | 120–180 |
| Epazote | Mar 25 | May 20 | May 27 | Jul 15 – Sep 9 | 45–60 |
| Fennel (herb) | Apr 8 | Apr 29 | May 6 | Jul 8 – Sep 16 | 60–90 |
| Feverfew | — | — | May 20 | Aug 19 – Nov 4 | 90–120 |
| Garlic Chives | — | — | May 20 | Jul 22 – Sep 30 | 60–90 |
| Horehound | — | — | May 20 | Aug 5 – Sep 30 | 75–90 |
| Hyssop | — | — | May 20 | Jul 29 – Sep 30 | 70–90 |
| Lavender | — | — | May 20 | Aug 19 – Dec 2 | 90–200 |
| Lemon Balm | — | — | May 20 | Jul 22 – Sep 9 | 60–70 |
| Lemon Thyme | — | — | May 20 | Jul 29 – Sep 30 | 70–90 |
| Lovage | — | — | May 20 | Jul 29 – Sep 30 | 70–90 |
| Marjoram | — | — | May 20 | Jul 22 – Sep 30 | 60–90 |
| Mint | — | — | May 20 | Jul 22 – Sep 30 | 60–90 |
| Oregano | — | — | May 20 | Jul 22 – Sep 30 | 60–90 |
| Parsley | Apr 8 | Apr 29 | May 6 | Jul 8 – Sep 9 | 60–80 |
| Rue | — | — | May 20 | Jul 29 – Sep 30 | 70–90 |
| Sage | — | — | May 20 | Aug 5 – Sep 30 | 75–90 |
| Savory | — | — | May 20 | Jul 15 – Sep 9 | 50–70 |
| Sorrel | Apr 8 | Apr 29 | May 6 | Jun 17 – Aug 19 | 40–60 |
| Tarragon | — | — | May 20 | Jul 22 – Sep 30 | 60–90 |
| Thai Basil | Mar 25 | May 20 | May 27 | Jul 22 – Sep 23 | 50–75 |
| Thyme | — | — | May 20 | Jul 29 – Sep 30 | 70–90 |
| Valerian | — | — | May 20 | Sep 23 – Dec 2 | 120–180 |
| Yarrow | — | — | May 20 | Aug 19 – Nov 4 | 90–120 |
Monthly Planting Guide for Kodiak Island Borough
Gardening Guides & Resources
Helpful guides from The Ultimate Homestead to improve your garden in Kodiak Island Borough.
Frequently Asked Questions
What planting zone is Kodiak Island Borough, AK?
Kodiak Island Borough is in USDA Hardiness Zone 6a. This zone classification determines which perennial plants survive winter and sets the baseline for frost timing across the county.
When is the last frost in Kodiak Island Borough, AK?
Based on 31 years of NOAA weather station data, the median last spring frost in Kodiak Island Borough falls around May 13. In 8 out of 10 years, last frost lands between April 26 and May 25 — a 29-day window of variability. Use May 25 as your conservative safe-to-plant date for frost-sensitive crops.
When is the first fall frost in Kodiak Island Borough, AK?
The median first fall frost in Kodiak Island Borough arrives around September 29. In cold years it can arrive as early as September 19; in mild years as late as October 21. Harvest or protect frost-sensitive crops — tomatoes, peppers, basil, squash — before this date.
How long is the growing season in Kodiak Island Borough?
Kodiak Island Borough has a frost-free growing season of approximately 139 days. Focus on short-season varieties and start warm-season crops indoors 6–8 weeks before last frost. Climate records show the growing season is trending longer by about 4.07 days per decade.
What is the soil like in Kodiak Island Borough for gardening?
Kodiak Island Borough has predominantly Silt Loam soil with a pH range of 5.1–6.5 and Somewhat Poorly Drained drainage. The native soil conditions make raised beds a particularly good investment here — they let you control drainage and fertility independent of the ground soil.
What is grown commercially in Kodiak Island Borough?
Kodiak Island Borough has commercial agriculture that includes Hay, Potatoes, Cattle. These crops reflect the local climate and soil conditions — what succeeds commercially often translates well to home gardens in the same area.
Is Kodiak Island Borough a good location for home gardening?
Kodiak Island Borough scores 53/100 (Moderate) on our Microclimate Index, which combines frost reliability, drought pressure, soil challenge, elevation risk, and long-term climate trend. Conditions here are moderate — most common crops grow well with standard timing and care.
Plan Your Garden with Confidence
Get our free Garden Planner — designed to help Kodiak Island Borough gardeners in Zone 6a organize planting dates, track what's growing, and never miss a planting window.
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