Washington Planting Calendar
Washington spans USDA hardiness zones 4b, 5a, 5b, 6a, 6b, 7a, 7b, 8a, 8b. Planting dates vary significantly across the state depending on your zone. Find your county on the map below for exact frost dates and planting windows.
Find Your County
Click any county to see your local planting calendar with exact frost dates and planting windows.
Hover over a county to see details. Click to view planting guide.
Zones in Washington
Zone 5b
Winter low: -15 to -10°F
178
Growing Days
Apr 18
Last Frost
Oct 13
First Frost
4
Counties
Zone 6a
Winter low: -10 to -5°F
193
Growing Days
Apr 10
Last Frost
Oct 20
First Frost
6
Counties
Zone 6b
Winter low: -5 to 0°F
205
Growing Days
Apr 3
Last Frost
Oct 25
First Frost
8
Counties
Zone 7a
Winter low: 0 to 5°F
221
Growing Days
Mar 25
Last Frost
Nov 1
First Frost
3
Counties
Zone 7b
Winter low: 5 to 10°F
235
Growing Days
Mar 18
Last Frost
Nov 8
First Frost
2
Counties
Zone 8a
Winter low: 10 to 15°F
255
Growing Days
Mar 8
Last Frost
Nov 18
First Frost
14
Counties
Zone 8b
Winter low: 15 to 20°F
276
Growing Days
Feb 25
Last Frost
Nov 28
First Frost
2
Counties
Growing Season Comparison
Growing Season by Zone
Zone 1a
Jun 15 – Aug 15
Zone 1b
Jun 7 – Aug 25
Zone 2a
May 30 – Sep 1
Zone 2b
May 22 – Sep 10
Zone 3a
May 15 – Sep 15
Zone 4a
May 6 – Sep 28
Zone 5a
Apr 25 – Oct 8
Zone 5b
Apr 18 – Oct 13
Zone 6a
Apr 10 – Oct 20
Zone 6b
Apr 3 – Oct 25
Zone 7a
Mar 25 – Nov 1
Zone 7b
Mar 18 – Nov 8
Zone 8a
Mar 8 – Nov 18
Zone 8b
Feb 25 – Nov 28
Zone 9a
Feb 10 – Dec 10
Zone 10a
Jan 1 – Dec 31
0
90
180
270
365 days
Frost Dates & Growing Season by County
View all 39 Washington counties with frost dates
| County | Zone | Last Frost | First Frost | Growing Days |
|---|---|---|---|---|
| Adams County | 6b | May 7 | Oct 3 | 149 |
| Asotin County | 6b | May 9 | Sep 30 | 144 |
| Benton County | 7a | Apr 3 | Oct 27 | 207 |
| Chelan County | 6a | Apr 24 | Oct 20 | 179 |
| Clallam County | 8a | Apr 23 | Oct 26 | 186 |
| Clark County | 8a | Apr 14 | Oct 27 | 196 |
| Columbia County | 6b | Apr 28 | Oct 11 | 166 |
| Cowlitz County | 8a | Apr 15 | Oct 29 | 197 |
| Douglas County | 6b | May 8 | Oct 4 | 149 |
| Ferry County | 5b | May 10 | Sep 24 | 137 |
| Franklin County | 7a | Apr 13 | Oct 23 | 193 |
| Garfield County | 6a | May 9 | Sep 30 | 144 |
| Grant County | 6b | Apr 29 | Oct 10 | 164 |
| Grays Harbor County | 8a | Apr 27 | Oct 23 | 179 |
| Island County | 8a | Mar 30 | Nov 3 | 218 |
| Jefferson County | 8a | Apr 14 | Oct 29 | 198 |
| King County | 8b | Apr 7 | Oct 30 | 206 |
| Kitsap County | 8a | Mar 25 | Nov 5 | 225 |
| Kittitas County | 6a | May 7 | Oct 2 | 148 |
| Klickitat County | 6b | Apr 14 | Oct 19 | 188 |
| Lewis County | 7b | Apr 25 | Oct 24 | 182 |
| Lincoln County | 6a | May 19 | Sep 26 | 130 |
| Mason County | 8a | Apr 18 | Oct 29 | 194 |
| Okanogan County | 5b | May 13 | Sep 26 | 136 |
| Pacific County | 8b | Apr 18 | Oct 29 | 194 |
| Pend Oreille County | 5b | May 10 | Sep 23 | 136 |
| Pierce County | 8a | Apr 13 | Oct 30 | 200 |
| San Juan County | 8a | Mar 26 | Nov 3 | 222 |
| Skagit County | 8a | Apr 3 | Oct 28 | 208 |
| Skamania County | 7a | Apr 18 | Oct 19 | 184 |
| Snohomish County | 8a | Mar 25 | Nov 2 | 222 |
| Spokane County | 6a | May 11 | Sep 27 | 139 |
| Stevens County | 5b | May 10 | Sep 24 | 137 |
| Thurston County | 8a | Apr 15 | Oct 29 | 197 |
| Wahkiakum County | 8a | Apr 13 | Nov 4 | 205 |
| Walla Walla County | 6b | Apr 20 | Oct 15 | 178 |
| Whatcom County | 7b | Apr 6 | Oct 29 | 206 |
| Whitman County | 6a | May 10 | Sep 29 | 142 |
| Yakima County | 6b | May 6 | Oct 3 | 150 |
🥬 Vegetables
Browse all 116 vegetables you can grow in Washington
- Acorn Squash
- Amaranth
- Artichoke
- Arugula
- Asparagus
- Beets
- Belgian Endive
- Bitter Melon
- Black Beans
- Bok Choy
- Broccoli
- Broccoli Rabe
- Brussels Sprouts
- Butternut Squash
- Cabbage
- Calabash
- Cardoon
- Carrots
- Cauliflower
- Celeriac
- Celery
- Celtuce
- Chard
- Chayote
- Chickpeas
- Chicory
- Chinese Cabbage
- Christmas Lima Beans
- Collard Greens
- Corn
- Cowpeas
- Cress
- Crookneck Squash
- Crosne
- Cucumber
- Daikon
- Delicata Squash
- Edamame
- Eggplant
- Endive
- Escarole
- Fava Beans
- Fennel
- Garlic
- Ginger
- Green Beans
- Horseradish
- Hot Peppers
- Hubbard Squash
- Jicama
- Kabocha
- Kai Lan
- Kale
- Kidney Beans
- Kohlrabi
- Komatsuna
- Leeks
- Lentils
- Lettuce
- Lima Beans
- Loofah
- Luffa
- Mache
- Malabar Spinach
- Melon
- Microgreens
- Mitsuba
- Mizuna
- Mustard Greens
- Napa Cabbage
- New Zealand Spinach
- Okra
- Onion
- Pac Choi
- Parsnip
- Patty Pan Squash
- Peas
- Peppers
- Pole Beans
- Potatoes
- Pumpkin
- Purslane
- Radicchio
- Radish
- Rhubarb
- Romanesco
- Rutabaga
- Salsify
- Savoy Cabbage
- Scallions
- Scarlet Runner Beans
- Shallot
- Shiso
- Snap Peas
- Snow Peas
- Soybeans
- Spaghetti Squash
- Spinach
- Squash (Summer)
- Squash (Winter)
- Sunchoke
- Sunflower
- Sweet Corn
- Sweet Potatoes
- Tatsoi
- Tomatillo
- Tomatoes
- Turmeric
- Turnip
- Watercress
- Watermelon
- Wax Beans
- Winter Melon
- Yam
- Yard Long Beans
- Zucchini
🍓 Fruits
Browse all 34 fruits you can grow in Washington
- Alpine Strawberries
- Aronia
- Blackberries
- Blueberries
- Boysenberries
- Cantaloupe
- Che Fruit
- Cranberries
- Currants
- Dragon Fruit
- Elderberries
- Figs
- Goji Berries
- Gooseberries
- Grapes
- Ground Cherry
- Guava
- Hardy Kiwi
- Haskaps
- Honeydew
- Jostaberry
- Kiwi
- Lingonberries
- Loquat
- Medlar
- Mulberries
- Passion Fruit
- Pawpaw
- Persimmon
- Pomegranate
- Quince
- Raspberries
- Serviceberries
- Strawberries
🌿 Herbs
Browse all 42 herbs you can grow in Washington
- Angelica
- Anise
- Basil
- Bee Balm
- Borage
- Caraway
- Catnip
- Chamomile
- Chervil
- Chives
- Cilantro
- Comfrey
- Cumin
- Dill
- Echinacea
- Epazote
- Fennel (herb)
- Feverfew
- Garlic Chives
- Horehound
- Hyssop
- Lavender
- Lemon Balm
- Lemon Thyme
- Lemon Verbena
- Lemongrass
- Lovage
- Marjoram
- Mint
- Oregano
- Parsley
- Rosemary
- Rue
- Sage
- Savory
- Sorrel
- Stevia
- Tarragon
- Thai Basil
- Thyme
- Valerian
- Yarrow
Monthly Planting Guide for Washington
The Gardener's Encyclopedia to Companion Planting
$27
$293 value
The pairings that make vegetables, herbs, and flowers grow better — and the ones that quietly wreck a bed.
- Proven pairings for 200+ vegetables, herbs, flowers, and fruits
- Full seed-starting + planting schedule with timing and spacing
- Bonus: square-foot gardening guide + printable seasonal planners