Planting calendar for Seattle, Washington

Dates from 30 years of records at the Seattle Boeing Field weather station, 5.4 miles from Seattle, worked out crop by crop with the same method as the Year Round Garden app.

Seattle at a glance

Weather station: Seattle Boeing Field · 5.4 mi
USDA zone: 9a
Last spring frost: typically Mar 13; 1 year in 10 after Apr 1
First fall frost: typically Nov 17; 1 year in 10 before Nov 1
Frost-free season: about 249 days
Hottest month: August: highs 77°F, nights 58°F
Coldest month: December: highs 48°F, nights 36°F
Rain: 36 in. a year, most in January, November and December

What shapes the seasons here

The last spring frost in Seattle typically comes around Mar 13, but 1 year in 10 it comes after Apr 1. The first fall frost typically arrives around Nov 17. That leaves about 249 frost-free days for tender crops like tomatoes, peppers and squash.

Summers are mild, with highs around 77°F in August, so cool-season crops last longer here than in hotter places: leaf lettuce is best planted Feb 19–Apr 21, Jul 24–Nov 21.

Seattle gets about 36 inches of rain a year, most of it in January, November and December.

147 of the 174 crops in the app grow here; 27 need a different climate (listed near the bottom).

When to plant the most popular crops

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Tomato (slicing)

Tomato (cherry & grape)

Pepper (sweet / bell)

Pepper (hot / chili)

Eggplant

Cucumber (slicing)

Summer squash & zucchini

Watermelon

Bean (bush snap)

Sweet corn

Potato

Pea (snap & snow)

Lettuce (leaf & mesclun)

Spinach

Kale

Collard greens

Broccoli

Cabbage

Carrot

Radish

Onion (bulbing)

Garlic

Basil

Cilantro

Strawberry

Best Can plant Start indoors

Get these dates as reminders for your exact yard

The free Year Round Garden app uses the weather station nearest your own address, not just the city. It reminds you when to start seeds, plant and harvest, sends frost and storm alerts from the National Weather Service, and keeps a garden journal. No account needed, in English and Spanish.

Download on the App Store Free for up to 5 plants on iPhone and Android.

What to plant in Seattle, month by month

January9

Best time to plant

Vegetables: Brussels sprouts, Fava bean, Kale, Mache (corn salad), Rutabaga, Spinach

Flowers: Larkspur, Pansy / viola, Snapdragon

Can also plant

Arugula, Beet, Broccoli, Broccoli raab (rapini), Cabbage, Cardoon, Carrot, Chinese broccoli (gai lan), Collard greens, Daikon radish, Kohlrabi, Komatsuna (mustard spinach), Leek, Lettuce (leaf & mesclun), Lettuce (romaine & head), Mustard greens, Napa / Chinese cabbage, Onion (bulbing), Parsnip, Pea (shelling / English), Pea (snap & snow), Radish, Salsify, Shallot, Swiss chard, Turnip, Caraway, Chamomile, Chervil, Cilantro, Parsley, Blueberry, Bachelor's button (cornflower), Calendula, California poppy, Coreopsis (tickseed), Stock, Sweet alyssum, Sweet pea (flower)

Start seeds indoors

Artichoke, Broccoli, Brussels sprouts, Cabbage, Cardoon, Cauliflower, Leek, Lettuce (romaine & head), Onion (bulbing), Chives, Lovage, Parsley, Pansy / viola, Purple coneflower (echinacea), Snapdragon, Statice, Stock

February31

Best time to plant

Vegetables: Arugula, Broccoli, Broccoli raab (rapini), Brussels sprouts, Cabbage, Cauliflower, Collard greens, Daikon radish, Endive & escarole, Fava bean, Kale, Leek, Lettuce (leaf & mesclun), Lettuce (romaine & head), Mache (corn salad), Mustard greens, Parsnip, Radish, Rhubarb, Rutabaga, Spinach

Herbs: Chervil, Cilantro

Fruit: Fig, Raspberry

Flowers: Bachelor's button (cornflower), California poppy, Larkspur, Pansy / viola, Snapdragon, Sweet pea (flower)

Can also plant

Asparagus, Beet, Cardoon, Carrot, Chinese broccoli (gai lan), Green onion / scallion, Kohlrabi, Komatsuna (mustard spinach), Napa / Chinese cabbage, Onion (bulbing), Pea (shelling / English), Pea (snap & snow), Potato, Radicchio, Salsify, Shallot, Swiss chard, Turnip, Caraway, Chamomile, Parsley, Blackberry, Blueberry, Grape (bunch), Strawberry, Calendula, Coreopsis (tickseed), Stock, Sweet alyssum

Start seeds indoors

Broccoli, Cabbage, Cardoon, Celeriac (celery root), Celery, Lettuce (romaine & head), Bee balm (bergamot), Catnip, Chives, Feverfew, Garlic chives, Lavender, Lemon balm, Lovage, Oregano, Parsley, Rosemary, Sage, Thyme, Winter savory, Purple coneflower (echinacea), Stock

March70

Best time to plant

Vegetables: Artichoke, Arugula, Asparagus, Beet, Bok choy / pak choi, Broccoli, Broccoli raab (rapini), Brussels sprouts, Cabbage, Carrot, Chickpea / garbanzo, Chinese broccoli (gai lan), Collard greens, Daikon radish, Fava bean, Fennel (bulb), Garden cress, Green onion / scallion, Kale, Kohlrabi, Komatsuna (mustard spinach), Leek, Lettuce (leaf & mesclun), Lettuce (romaine & head), Mache (corn salad), Mustard greens, Napa / Chinese cabbage, Onion (bulbing), Parsnip, Pea (shelling / English), Pea (snap & snow), Radicchio, Radish, Rhubarb, Shallot, Spinach, Sunchoke (Jerusalem artichoke), Swiss chard, Turnip, Watercress

Herbs: Caraway, Catnip, Chamomile, Chervil, Chives, Cilantro, Lemon balm, Lovage, Mint, Parsley, Sorrel (French / garden), Tarragon (French)

Fruit: Blackberry, Blueberry, Fig, Grape (bunch), Muscadine grape, Raspberry, Strawberry

Flowers: Bachelor's button (cornflower), Calendula, California poppy, Coreopsis (tickseed), Larkspur, Pansy / viola, Snapdragon, Statice, Stock, Sweet alyssum, Sweet pea (flower)

Can also plant

Cardoon, Cauliflower, Celeriac (celery root), Endive & escarole, Potato, Rutabaga, Salsify, Anise hyssop, Bay laurel, Bee balm (bergamot), Borage, Dill, Fenugreek (methi), Feverfew, Garlic chives, Lavender, Oregano, Rosemary, Sage, Thyme, Winter savory, Black-eyed Susan, Milkweed (native), Purple coneflower (echinacea)

Start seeds indoors

Broccoli, Cardoon, Celeriac (celery root), Onion (bulbing), Pepper (hot / chili), Pepper (sweet / bell), Tomato (cherry & grape), Tomato (paste / determinate), Tomato (slicing), Anise hyssop, Bee balm (bergamot), Feverfew, Garlic chives, Marjoram, Oregano, Sage, Thyme, Winter savory, Ground cherry, Milkweed (native), Stock, Strawflower

April67

Best time to plant

Vegetables: Arugula, Beet, Bok choy / pak choi, Broccoli, Broccoli raab (rapini), Cabbage, Cardoon, Carrot, Celeriac (celery root), Celery, Chinese broccoli (gai lan), Collard greens, Daikon radish, Garden cress, Green onion / scallion, Kohlrabi, Komatsuna (mustard spinach), Lettuce (leaf & mesclun), Mustard greens, Napa / Chinese cabbage, Onion (bulbing), Pea (shelling / English), Pea (snap & snow), Potato, Radish, Shallot, Swiss chard, Tomato (early / short-season), Turnip, Watercress

Herbs: Anise hyssop, Bay laurel, Bee balm (bergamot), Caraway, Catnip, Chamomile, Chervil, Chives, Cilantro, Fenugreek (methi), Feverfew, Garlic chives, Lavender, Lemon balm, Mint, Oregano, Parsley, Rosemary, Sage, Sorrel (French / garden), Summer savory, Tarragon (French), Thyme, Winter savory

Fruit: Blackberry, Strawberry

Flowers: Bachelor's button (cornflower), Calendula, California poppy, Coreopsis (tickseed), Milkweed (native), Pansy / viola, Purple coneflower (echinacea), Stock, Strawflower, Sweet alyssum, Sweet pea (flower)

Can also plant

Artichoke, Asparagus, Brussels sprouts, Cauliflower, Chickpea / garbanzo, Endive & escarole, Fava bean, Fennel (bulb), Kale, Leek, Lettuce (romaine & head), Mache (corn salad), Parsnip, Rhubarb, Rutabaga, Salsify, Spinach, Borage, Dill, Lemon verbena, Lovage, Marjoram, Fig, Raspberry, Black-eyed Susan, Larkspur, Nasturtium, Snapdragon, Statice

Start seeds indoors

Cardoon, Celeriac (celery root), Celery, Eggplant, Leek, Onion (bulbing), Tomatillo, Marjoram, Parsley, Shiso (perilla), Cucamelon / mouse melon, Annual salvia

May51

Best time to plant

Vegetables: Armenian cucumber, Bean (bush snap), Bean (dry / shelling), Bean (pole), Beet, Bitter melon, Cardoon, Celeriac (celery root), Cucumber (pickling), Cucumber (slicing), Garden cress, Kohlrabi, New Zealand spinach, Pepper (hot / chili), Pepper (sweet / bell), Popcorn, Potato, Pumpkin, Radish, Salsify, Summer squash & zucchini, Sweet corn, Swiss chard, Tomatillo, Tomato (cherry & grape), Tomato (paste / determinate), Tomato (slicing), Turnip, Winter squash

Herbs: Anise hyssop, Bay laurel, Bee balm (bergamot), Borage, Epazote, Garlic chives, Lavender, Lemon verbena, Marjoram, Oregano, Rosemary, Shiso (perilla), Thyme, Winter savory

Fruit: Cucamelon / mouse melon, Ground cherry

Flowers: Black-eyed Susan, Calendula, Milkweed (native), Purple coneflower (echinacea), Stock, Sweet alyssum

Can also plant

Arugula, Bok choy / pak choi, Broccoli, Broccoli raab (rapini), Brussels sprouts, Cabbage, Carrot, Cauliflower, Celery, Chickpea / garbanzo, Chinese broccoli (gai lan), Collard greens, Daikon radish, Endive & escarole, Fennel (bulb), Kale, Komatsuna (mustard spinach), Leek, Lettuce (leaf & mesclun), Lettuce (romaine & head), Mustard greens, Napa / Chinese cabbage, Onion (bulbing), Parsnip, Pea (shelling / English), Pea (snap & snow), Rutabaga, Shallot, Spinach, Tomato (early / short-season), Caraway, Chamomile, Chervil, Cilantro, Dill, Fenugreek (methi), Parsley, Summer savory, Vietnamese coriander (rau ram), Annual salvia, Bachelor's button (cornflower), California poppy, Cleome (spider flower), Coreopsis (tickseed), Larkspur, Marigold, Nasturtium, Pansy / viola, Snapdragon, Statice, Strawflower, Sunflower, Sweet pea (flower)

Start seeds indoors

Cardoon, Celeriac (celery root), Eggplant, Leek, Onion (bulbing), Pepper (hot / chili), Pepper (sweet / bell), Tomato (heat-set varieties), Basil, Parsley, Annual salvia, Globe amaranth (gomphrena), Marigold, Stock

June31

Best time to plant

Vegetables: Amaranth greens / callaloo, Bean (lima), Cardoon, Celeriac (celery root), Edamame, Eggplant, Leek, Napa / Chinese cabbage, Onion (bulbing), Parsnip, Pepper (hot / chili), Potato, Pumpkin, Purslane, Salsify, Shallot, Tomato (heat-set varieties), Winter melon / wax gourd

Herbs: Basil, Papalo, Stevia, Vietnamese coriander (rau ram)

Fruit: Cantaloupe & melons, Watermelon

Flowers: Annual salvia, Black-eyed Susan, Cleome (spider flower), Coreopsis (tickseed), Marigold, Nasturtium, Sunflower

Can also plant

Armenian cucumber, Arugula, Bean (bush snap), Bean (dry / shelling), Bean (pole), Beet, Bitter melon, Broccoli, Broccoli raab (rapini), Brussels sprouts, Cabbage, Carrot, Cauliflower, Celery, Chickpea / garbanzo, Chinese broccoli (gai lan), Collard greens, Cucumber (pickling), Cucumber (slicing), Daikon radish, Endive & escarole, Fava bean, Fennel (bulb), Garden cress, Kale, Kohlrabi, Komatsuna (mustard spinach), Lettuce (leaf & mesclun), Lettuce (romaine & head), Mustard greens, New Zealand spinach, Pea (shelling / English), Pea (snap & snow), Pepper (sweet / bell), Popcorn, Radish, Rutabaga, Summer squash & zucchini, Sweet corn, Swiss chard, Tomatillo, Tomato (cherry & grape), Tomato (early / short-season), Tomato (paste / determinate), Tomato (slicing), Turnip, Winter squash, Borage, Caraway, Chamomile, Cilantro, Cuban oregano, Dill, Epazote, Fenugreek (methi), Parsley, Shiso (perilla), Summer savory, Cucamelon / mouse melon, Ground cherry, Bachelor's button (cornflower), Calendula, California poppy, Cosmos, Globe amaranth (gomphrena), Larkspur, Pansy / viola, Snapdragon, Statice, Stock, Strawflower, Sweet alyssum, Sweet pea (flower), Zinnia

Start seeds indoors

Broccoli, Cardoon, Leek, Lettuce (romaine & head), Onion (bulbing), Pepper (sweet / bell), Tomato (cherry & grape), Tomato (early / short-season), Tomato (paste / determinate), Tomato (slicing), Parsley, Marigold, Pansy / viola, Snapdragon, Statice, Stock

July53

Best time to plant

Vegetables: Bean (dry / shelling), Bean (lima), Beet, Cardoon, Carrot, Celeriac (celery root), Celery, Chinese broccoli (gai lan), Edamame, Eggplant, Endive & escarole, Komatsuna (mustard spinach), Leek, Lettuce (leaf & mesclun), Lettuce (romaine & head), Napa / Chinese cabbage, Onion (bulbing), Parsnip, Pea (shelling / English), Pea (snap & snow), Pepper (hot / chili), Pepper (sweet / bell), Potato, Pumpkin, Salsify, Shallot, Sweet corn, Swiss chard, Tomato (paste / determinate), Tomato (slicing), Winter melon / wax gourd, Winter squash

Herbs: Borage, Caraway, Chamomile, Cilantro, Cuban oregano, Parsley, Stevia

Fruit: Cantaloupe & melons, Watermelon

Flowers: Annual salvia, Black-eyed Susan, Calendula, Cleome (spider flower), Coreopsis (tickseed), Cosmos, Globe amaranth (gomphrena), Marigold, Nasturtium, Sunflower, Sweet alyssum, Zinnia

Can also plant

Amaranth greens / callaloo, Armenian cucumber, Arugula, Bean (bush snap), Bean (pole), Bitter melon, Bok choy / pak choi, Broccoli, Broccoli raab (rapini), Brussels sprouts, Cabbage, Cauliflower, Chickpea / garbanzo, Collard greens, Cucumber (pickling), Cucumber (slicing), Daikon radish, Fava bean, Fennel (bulb), Garden cress, Kale, Kohlrabi, Mache (corn salad), Mustard greens, New Zealand spinach, Popcorn, Purslane, Radish, Rutabaga, Spinach, Summer squash & zucchini, Tomatillo, Tomato (cherry & grape), Tomato (early / short-season), Tomato (heat-set varieties), Turnip, Basil, Chervil, Dill, Epazote, Fenugreek (methi), Papalo, Shiso (perilla), Summer savory, Cucamelon / mouse melon, Ground cherry, Bachelor's button (cornflower), California poppy, Larkspur, Pansy / viola, Snapdragon, Statice, Stock, Strawflower, Sweet pea (flower)

Start seeds indoors

Broccoli, Brussels sprouts, Cabbage, Cardoon, Cauliflower, Leek, Lettuce (romaine & head), Onion (bulbing), Tomato (cherry & grape), Tomato (early / short-season), Parsley, Pansy / viola, Snapdragon, Stock, Strawflower

August70

Best time to plant

Vegetables: Armenian cucumber, Arugula, Bean (bush snap), Bean (pole), Beet, Bitter melon, Bok choy / pak choi, Broccoli, Broccoli raab (rapini), Brussels sprouts, Cabbage, Cardoon, Carrot, Cauliflower, Celeriac (celery root), Chinese broccoli (gai lan), Collard greens, Cucumber (pickling), Cucumber (slicing), Daikon radish, Endive & escarole, Fennel (bulb), Garden cress, Kohlrabi, Komatsuna (mustard spinach), Leek, Lettuce (leaf & mesclun), Lettuce (romaine & head), Mustard greens, Napa / Chinese cabbage, New Zealand spinach, Onion (bulbing), Parsnip, Pea (shelling / English), Pea (snap & snow), Pepper (sweet / bell), Radish, Salsify, Shallot, Summer squash & zucchini, Sweet corn, Swiss chard, Tomato (cherry & grape), Tomato (early / short-season), Tomato (paste / determinate), Tomato (slicing), Turnip

Herbs: Basil, Borage, Caraway, Chamomile, Chervil, Cilantro, Dill, Epazote, Fenugreek (methi), Parsley

Flowers: Annual salvia, Bachelor's button (cornflower), Calendula, California poppy, Coreopsis (tickseed), Marigold, Nasturtium, Snapdragon, Statice, Stock, Strawflower, Sweet alyssum, Sweet pea (flower)

Can also plant

Amaranth greens / callaloo, Fava bean, Kale, Mache (corn salad), Purslane, Rutabaga, Spinach, Cuban oregano, Shiso (perilla), Summer savory, Cucamelon / mouse melon, Ground cherry, Black-eyed Susan, Larkspur, Pansy / viola

Start seeds indoors

Broccoli, Brussels sprouts, Cabbage, Leek, Lettuce (romaine & head), Onion (bulbing), Parsley, Pansy / viola, Snapdragon, Stock

September52

Best time to plant

Vegetables: Arugula, Beet, Bok choy / pak choi, Broccoli, Broccoli raab (rapini), Brussels sprouts, Cabbage, Cardoon, Carrot, Chinese broccoli (gai lan), Collard greens, Daikon radish, Fava bean, Garden cress, Kale, Kohlrabi, Komatsuna (mustard spinach), Leek, Lettuce (leaf & mesclun), Lettuce (romaine & head), Mache (corn salad), Mustard greens, Napa / Chinese cabbage, Onion (bulbing), Parsnip, Pea (shelling / English), Pea (snap & snow), Radish, Rutabaga, Salsify, Shallot, Spinach, Swiss chard, Turnip

Herbs: Borage, Caraway, Chamomile, Chervil, Cilantro, Dill, Fenugreek (methi), Parsley

Flowers: Bachelor's button (cornflower), Calendula, California poppy, Coreopsis (tickseed), Larkspur, Pansy / viola, Snapdragon, Stock, Sweet alyssum, Sweet pea (flower)

Can also plant

Celeriac (celery root)

Start seeds indoors

Broccoli, Brussels sprouts, Cabbage, Leek, Lettuce (romaine & head), Parsley, Pansy / viola, Snapdragon, Stock

October49

Best time to plant

Vegetables: Arugula, Beet, Broccoli, Broccoli raab (rapini), Brussels sprouts, Cabbage, Carrot, Chinese broccoli (gai lan), Collard greens, Daikon radish, Elephant garlic, Fava bean, Garden cress, Garlic, Kale, Kohlrabi, Komatsuna (mustard spinach), Leek, Lettuce (leaf & mesclun), Lettuce (romaine & head), Mache (corn salad), Mustard greens, Napa / Chinese cabbage, Onion (bulbing), Parsnip, Pea (shelling / English), Pea (snap & snow), Radish, Rutabaga, Salsify, Shallot, Spinach, Swiss chard, Turnip

Herbs: Caraway, Chamomile, Chervil, Cilantro, Parsley

Flowers: Bachelor's button (cornflower), Calendula, California poppy, Coreopsis (tickseed), Larkspur, Pansy / viola, Snapdragon, Stock, Sweet alyssum, Sweet pea (flower)

Can also plant

Cardoon, Celeriac (celery root)

Start seeds indoors

Broccoli, Brussels sprouts, Cabbage, Lettuce (romaine & head), Pansy / viola

November45

Best time to plant

Vegetables: Arugula, Beet, Broccoli, Broccoli raab (rapini), Brussels sprouts, Cabbage, Carrot, Chinese broccoli (gai lan), Collard greens, Daikon radish, Elephant garlic, Fava bean, Garlic, Kale, Kohlrabi, Komatsuna (mustard spinach), Leek, Lettuce (leaf & mesclun), Lettuce (romaine & head), Mache (corn salad), Mustard greens, Napa / Chinese cabbage, Parsnip, Pea (shelling / English), Pea (snap & snow), Radish, Rutabaga, Salsify, Shallot, Spinach, Turnip

Herbs: Caraway, Chamomile, Chervil, Cilantro, Parsley

Flowers: Bachelor's button (cornflower), Calendula, California poppy, Larkspur, Pansy / viola, Snapdragon, Stock, Sweet alyssum, Sweet pea (flower)

Can also plant

Cardoon, Onion (bulbing), Swiss chard, Coreopsis (tickseed)

Start seeds indoors

Brussels sprouts, Pansy / viola, Snapdragon

December2

Best time to plant

Vegetables: Rutabaga

Flowers: Larkspur

Can also plant

Arugula, Beet, Broccoli, Broccoli raab (rapini), Brussels sprouts, Cabbage, Cardoon, Carrot, Chinese broccoli (gai lan), Collard greens, Daikon radish, Fava bean, Kale, Kohlrabi, Komatsuna (mustard spinach), Leek, Lettuce (leaf & mesclun), Lettuce (romaine & head), Mache (corn salad), Mustard greens, Napa / Chinese cabbage, Onion (bulbing), Parsnip, Pea (shelling / English), Pea (snap & snow), Radish, Salsify, Shallot, Spinach, Swiss chard, Turnip, Caraway, Chamomile, Chervil, Cilantro, Parsley, Bachelor's button (cornflower), Calendula, California poppy, Coreopsis (tickseed), Pansy / viola, Snapdragon, Stock, Sweet alyssum, Sweet pea (flower)

Start seeds indoors

Brussels sprouts, Leek, Pansy / viola, Snapdragon

Every crop that grows in Seattle

147 of 174 crops in the app fit this climate. Dates are for planting outdoors; “Start indoors” is for seeds you grow into transplants.

Vegetables

Crop	Best time to plant	Also possible	Start indoors	How
Amaranth greens / callaloo	Jun 15–29	Jun 30–Aug 25	—	Sow seeds
Armenian cucumber	May 11–25, Jul 29–Aug 18	May 26–Jul 28	—	Sow seeds
Artichoke	Feb 27–Mar 13	Mar 14–Apr 10	Dec 26–Jan 9	Set out plants
Arugula	Feb 19–Apr 29, Aug 1–Nov 21	Apr 30–Jul 31, Nov 22–Feb 18	—	Sow seeds
Asparagus	Feb 28–Mar 28	Feb 13–27, Mar 29–Apr 10	—	Set out plants
Bean (bush snap)	May 11–25, Aug 12–Sep 2	May 26–Aug 11	—	Sow seeds
Bean (dry / shelling)	May 11–25, Jul 8–29	May 26–Jul 7	—	Sow seeds
Bean (lima)	Jun 15–29, Jul 14–29	Jun 30–Jul 13	—	Sow seeds
Bean (pole)	May 11–25, Aug 2–23	May 26–Aug 1	—	Sow seeds
Beet	Mar 5–May 7, Jul 15–Nov 10	May 8–Jul 14, Nov 11–Mar 4	—	Sow seeds
Bitter melon	May 11–25, Jul 31–Aug 21	May 26–Jul 30	—	Sow seeds
Bok choy / pak choi	Mar 6–Apr 9, Jul 29–Sep 11	Feb 27–Mar 5, Apr 10–May 22, Jun 29–Jul 28	—	Sow seeds
Broccoli	Feb 16–Apr 25, Aug 2–Nov 23	Apr 26–Aug 1, Nov 24–Feb 15	Jan 5–Mar 14, Jun 21–Oct 12	Set out plants
Broccoli raab (rapini)	Feb 14–Apr 10, Jul 31–Nov 24	Apr 11–Jun 10, Jun 30–Jul 30, Nov 25–Feb 13	—	Sow seeds
Brussels sprouts	Jan 4–Mar 15, Aug 18–Dec 3	Mar 16–Aug 17, Dec 4–Jan 3	Jul 7–Oct 22, Nov 23–Feb 1	Set out plants
Cabbage	Feb 7–Apr 16, Aug 7–Nov 28	Apr 17–Aug 6, Nov 29–Feb 6	Jun 26–Oct 17, Dec 27–Mar 5	Set out plants
Cardoon	Mar 26–Sep 13	Sep 14–Mar 25	Jan 22–Jul 12	Set out plants
Carrot	Mar 5–Apr 29, Jul 7–Nov 10	Apr 30–Jul 6, Nov 11–Mar 4	—	Sow seeds
Cauliflower	Feb 20–Mar 6, Aug 7–27	Mar 7–Aug 6	Jan 9–23, Jun 26–Jul 16	Set out plants
Celeriac (celery root)	Apr 16–Aug 14	Mar 11–Apr 15, Aug 15–Nov 6	Jan 29–May 29	Set out plants
Celery	Apr 14–28, Jun 30–Jul 21	Apr 29–Jun 29	Jan 27–Feb 10, Apr 14–May 5	Set out plants
Chickpea / garbanzo	Mar 11–25	Mar 26–Jul 18	—	Sow seeds
Chinese broccoli (gai lan)	Mar 9–May 6, Jul 7–Nov 7	May 7–Jul 6, Nov 8–Mar 8	—	Sow seeds
Collard greens	Jan 31–Apr 12, Aug 13–Dec 1	Apr 13–Aug 12, Dec 2–Jan 30	—	Sow seeds
Cucumber (pickling)	May 11–25, Aug 5–26	May 26–Aug 4	—	Sow seeds
Cucumber (slicing)	May 11–25, Aug 3–23	May 26–Aug 2	—	Sow seeds
Daikon radish	Feb 7–Apr 24, Aug 15–Nov 28	Apr 25–Aug 14, Nov 29–Feb 6	—	Sow seeds
Edamame	Jun 15–29, Jul 16–28	Jun 30–Jul 15	—	Sow seeds
Eggplant	Jun 15–29, Jul 19–29	Jun 30–Jul 18	Apr 13–27, May 17–27	Set out plants
Elephant garlic	Oct 2–Dec 1	—	—	Sow seeds
Endive & escarole	Feb 20–Mar 6, Jul 20–Aug 10	Mar 7–Jul 19	—	Sow seeds
Fava bean	Jan 14–Mar 17, Aug 29–Dec 2	Mar 18–Apr 27, Jun 15–Aug 28, Dec 3–Jan 13	—	Sow seeds
Fennel (bulb)	Feb 27–Mar 13, Jul 30–Aug 20	Mar 14–Jul 29	—	Sow seeds
Garden cress	Mar 24–May 16, Aug 15–Oct 14	Feb 27–Mar 23, May 17–Aug 14	—	Sow seeds
Garlic	Oct 2–Dec 1	—	—	Sow seeds
Green onion / scallion	Mar 13–Apr 10	Feb 13–Mar 12	—	Sow seeds
Kale	Jan 10–Apr 6, Aug 29–Dec 2	Apr 7–Aug 28, Dec 3–Jan 9	—	Sow seeds
Kohlrabi	Mar 1–May 13, Jul 28–Nov 13	May 14–Jul 27, Nov 14–Feb 28	—	Sow seeds
Komatsuna (mustard spinach)	Feb 27–Apr 26, Jul 15–Nov 15	Apr 27–Jul 14, Nov 16–Feb 26	—	Sow seeds
Leek	Feb 16–Mar 19, Jun 6–Jul 12, Aug 2–Nov 23	Mar 20–Jun 5, Jul 13–Aug 1, Nov 24–Feb 15	Apr 4–May 10, May 31–Sep 21, Dec 15–Jan 15	Set out plants
Lettuce (leaf & mesclun)	Feb 19–Apr 21, Jul 24–Nov 21	Apr 22–Jul 23, Nov 22–Feb 18	—	Sow seeds
Lettuce (romaine & head)	Feb 14–Apr 2, Jul 21–Nov 24	Apr 3–Jun 3, Jun 20–Jul 20, Nov 25–Feb 13	Jan 10–Feb 26, Jun 16–Oct 20	Set out plants
Mache (corn salad)	Jan 12–Mar 20, Sep 13–Dec 2	Mar 21–Apr 30, Jul 8–Sep 12, Dec 3–Jan 11	—	Sow seeds
Mustard greens	Feb 15–Apr 16, Aug 5–Nov 24	Apr 17–Jun 16, Jul 6–Aug 4, Nov 25–Feb 14	—	Sow seeds
Napa / Chinese cabbage	Mar 8–Apr 20, Jun 23–Nov 8	Apr 21–Jun 22, Nov 9–Mar 7	—	Sow seeds
New Zealand spinach	May 11–25, Aug 5–25	May 26–Aug 4	—	Sow seeds
Onion (bulbing)	Mar 14–Apr 15, Jun 8–Nov 4	Apr 16–Jun 7, Nov 5–Mar 13	Mar 23–Aug 19, Dec 27–Jan 28	Set out plants
Parsnip	Feb 16–Mar 16, Jun 3–Jul 12, Aug 2–Nov 23	Mar 17–Jun 2, Jul 13–Aug 1, Nov 24–Feb 15	—	Sow seeds
Pea (shelling / English)	Mar 1–May 4, Jul 19–Nov 13	May 5–Jul 18, Nov 14–Feb 28	—	Sow seeds
Pea (snap & snow)	Mar 2–May 2, Jul 16–Nov 13	May 3–Jul 15, Nov 14–Mar 1	—	Sow seeds
Pepper (hot / chili)	May 24–Jun 7, Jul 11–Aug 1	Jun 8–Jul 10	Mar 22–Apr 5, May 9–30	Set out plants
Pepper (sweet / bell)	May 11–25, Jul 21–Aug 11	May 26–Jul 20	Mar 9–23, May 19–Jun 9	Set out plants
Popcorn	May 11–18	May 19–Jul 16	—	Sow seeds
Potato	Apr 18–May 8, May 29–Jul 31	Feb 13–Apr 17, May 9–28	—	Sow seeds
Pumpkin	May 11–25, Jun 16–Jul 7	May 26–Jun 15	—	Sow seeds
Purslane	Jun 15–29, Aug 11–16	Jun 30–Aug 10	—	Sow seeds
Radicchio	Feb 28–Mar 24	Feb 13–27, Mar 25–Apr 3	—	Sow seeds
Radish	Feb 19–May 12, Aug 14–Nov 21	May 13–Aug 13, Nov 22–Feb 18	—	Sow seeds
Rhubarb	Feb 13–Mar 13	Mar 14–Apr 10	—	Set out plants
Rutabaga	Sep 4–Mar 5	Mar 6–Sep 3	—	Sow seeds
Salsify	May 12–Nov 8	Nov 9–May 11	—	Sow seeds
Shallot	Mar 6–Apr 7, Jun 14–Nov 10	Apr 8–Jun 13, Nov 11–Mar 5	—	Sow seeds
Spinach	Sep 16–Dec 4, Dec 30–Mar 23	Mar 24–May 26, Jul 3–Sep 15, Dec 5–29	—	Sow seeds
Summer squash & zucchini	May 11–25, Aug 8–28	May 26–Aug 7	—	Sow seeds
Sunchoke (Jerusalem artichoke)	Mar 13–Apr 3	Feb 20–Mar 12	—	Sow seeds
Sweet corn	May 11–18, Jul 21–Aug 10	May 19–Jul 20	—	Sow seeds
Swiss chard	Mar 25–May 25, Jun 29–Oct 27	May 26–Jun 28, Oct 28–Mar 24	—	Sow seeds
Tomatillo	May 11–25	May 26–Aug 8	Mar 30–Apr 13	Set out plants
Tomato (cherry & grape)	May 11–25, Aug 5–25	May 26–Aug 4	Mar 23–Apr 6, Jun 17–Jul 7	Set out plants
Tomato (early / short-season)	Apr 14–21, Aug 10–30	Apr 22–Aug 9	Feb 24–Mar 3, Jun 22–Jul 12	Set out plants
Tomato (heat-set varieties)	Jun 15–29, Jul 23–27	Jun 30–Jul 22	Apr 27–May 11, Jun 4–8	Set out plants
Tomato (paste / determinate)	May 11–25, Jul 23–Aug 13	May 26–Jul 22	Mar 23–Apr 6, Jun 4–25	Set out plants
Tomato (slicing)	May 11–25, Jul 21–Aug 10	May 26–Jul 20	Mar 23–Apr 6, Jun 2–22	Set out plants
Turnip	Mar 1–May 13, Jul 28–Nov 13	May 14–Jul 27, Nov 14–Feb 28	—	Sow seeds
Watercress	Mar 20–Apr 17	Feb 20–Mar 19	—	Sow seeds
Winter melon / wax gourd	Jun 15–Jul 7	—	—	Sow seeds
Winter squash	May 11–25, Jun 26–Jul 17	May 26–Jun 25	—	Sow seeds

Herbs

Crop	Best time to plant	Also possible	Start indoors	How
Anise hyssop	Apr 10–May 8	Mar 13–Apr 9	Feb 24–Mar 24	Set out plants
Basil	Jun 15–22, Aug 3–10	Jun 23–Aug 2	May 11–18, Jun 29–Jul 6	Set out plants
Bay laurel	Apr 14–May 8	Mar 20–Apr 13	—	Set out plants
Bee balm (bergamot)	Apr 9–May 7	Mar 13–Apr 8, May 8	Feb 19–Mar 19	Set out plants
Borage	Apr 27–May 22, Jul 4–Sep 9	Mar 6–Apr 26, May 23–Jul 3	—	Sow seeds
Caraway	Mar 6–Apr 18, Jun 25–Nov 10	Apr 19–Jun 24, Nov 11–Mar 5	—	Sow seeds
Catnip	Mar 20–Apr 10	Feb 27–Mar 19	Jan 30–Feb 20	Set out plants
Chamomile	Mar 5–Apr 30, Jul 8–Nov 10	May 1–Jul 7, Nov 11–Mar 4	—	Sow seeds
Chervil	Feb 17–Apr 7, Aug 2–Nov 23	Apr 8–May 22, Jun 29–Aug 1, Nov 24–Feb 16	—	Sow seeds
Chives	Mar 13–Apr 10	Apr 11–May 8	Jan 23–Feb 20	Set out plants
Cilantro	Feb 21–Apr 12, Jul 18–Nov 19	Apr 13–Jun 6, Jun 21–Jul 17, Nov 20–Feb 20	—	Sow seeds
Cuban oregano	Jul 6–Aug 3	Jun 15–Jul 5, Aug 4–10	—	Set out plants
Dill	Feb 27–Mar 6, Aug 24–Sep 14	Mar 7–Aug 23	—	Sow seeds
Epazote	May 11–25, Aug 17–Sep 5	May 26–Aug 16	—	Sow seeds
Fenugreek (methi)	Mar 27–May 3, Jul 28–Sep 26	Mar 13–26, May 4–Jul 27	—	Sow seeds
Feverfew	Apr 2–30	Mar 6–Apr 1, May 1	Feb 12–Mar 12	Set out plants
Garlic chives	Apr 9–May 7	Mar 13–Apr 8, May 8	Feb 19–Mar 19	Set out plants
Lavender	Apr 13–May 7	Mar 20–Apr 12, May 8	Jan 26–Feb 19	Set out plants
Lemon balm	Mar 20–Apr 10	Feb 27–Mar 19	Feb 13–Mar 6	Set out plants
Lemon verbena	May 9–Jun 2	Apr 14–May 8	—	Set out plants
Lovage	Mar 8–29	Feb 27–Mar 7, Mar 30–Apr 10	Jan 18–Feb 8	Set out plants
Marjoram	May 9–Jun 2	Apr 14–May 8	Mar 21–Apr 14	Set out plants
Mint	Mar 20–Apr 10	Feb 27–Mar 19	—	Set out plants
Oregano	Apr 10–May 8	Mar 13–Apr 9	Feb 20–Mar 20	Set out plants
Papalo	Jun 15–29	Jun 30–Aug 2	—	Sow seeds
Parsley	Mar 6–Apr 18, Jun 25–Nov 10	Apr 19–Jun 24, Nov 11–Mar 5	Jan 2–Feb 14, Apr 23–Sep 8	Set out plants
Rosemary	Apr 14–May 8	Mar 20–Apr 13	Jan 27–Feb 20	Set out plants
Sage	Apr 3–May 1	Mar 6–Apr 2	Feb 13–Mar 13	Set out plants
Shiso (perilla)	May 11–18	May 19–Aug 20	Apr 6–13	Set out plants
Sorrel (French / garden)	Mar 20–Apr 17	Feb 20–Mar 19	—	Sow seeds
Stevia	Jun 15–Jul 15	—	—	Set out plants
Summer savory	Apr 14–28	Apr 29–Aug 23	—	Sow seeds
Tarragon (French)	Mar 17–Apr 14	Mar 13–16, Apr 15–May 8	—	Set out plants
Thyme	Apr 10–May 8	Mar 13–Apr 9	Feb 13–Mar 13	Set out plants
Vietnamese coriander (rau ram)	Jun 8–Jul 6	May 11–Jun 7	—	Set out plants
Winter savory	Apr 10–May 8	Mar 13–Apr 9	Feb 20–Mar 20	Set out plants

Fruit

Crop	Best time to plant	Also possible	Start indoors	How
Blackberry	Mar 10–Apr 10	Feb 6–Mar 9	—	Set out plants
Blueberry	Feb 24–Apr 3	Jan 16–Feb 23	—	Set out plants
Cantaloupe & melons	Jun 15–29, Jul 9–27	Jun 30–Jul 8	—	Sow seeds
Cucamelon / mouse melon	May 11–25	May 26–Aug 13	Apr 6–20	Set out plants
Fig	Feb 20–Mar 20	Mar 21–May 1	—	Set out plants
Grape (bunch)	Mar 6–27	Feb 13–Mar 5	—	Set out plants
Ground cherry	May 11–25	May 26–Aug 18	Mar 23–Apr 6	Set out plants
Muscadine grape	Mar 13–Apr 3	Feb 20–Mar 12	—	Set out plants
Raspberry	Feb 13–Mar 13	Mar 14–Apr 10	—	Set out plants
Strawberry	Mar 13–Apr 10	Feb 13–Mar 12	—	Set out plants
Watermelon	Jun 15–29, Jul 6–25	—	—	Sow seeds

Flowers

Crop	Best time to plant	Also possible	Start indoors	How
Annual salvia	Jun 17–Aug 14	May 11–Jun 16, Aug 15–Sep 5	Apr 8–Jun 5	Set out plants
Bachelor's button (cornflower)	Feb 16–Apr 21, Jul 31–Nov 23	Apr 22–Jul 30, Nov 24–Feb 15	—	Sow seeds
Black-eyed Susan	May 21–Aug 4	Mar 13–May 20, Aug 5–10	—	Sow seeds
Calendula	Mar 5–May 9, Jul 17–Nov 10	May 10–Jul 16, Nov 11–Mar 4	—	Sow seeds
California poppy	Feb 16–Apr 21, Jul 31–Nov 23	Apr 22–Jul 30, Nov 24–Feb 15	—	Sow seeds
Cleome (spider flower)	Jun 11–Jul 25	May 11–Jun 10, Jul 26–Aug 8	—	Sow seeds
Coreopsis (tickseed)	Mar 10–Apr 15, Jun 14–Nov 6	Apr 16–Jun 13, Nov 7–Mar 9	—	Sow seeds
Cosmos	Jul 3–21	Jun 15–Jul 2, Jul 22–30	—	Sow seeds
Globe amaranth (gomphrena)	Jul 3–21	Jun 15–Jul 2, Jul 22–30	May 15–Jun 2	Set out plants
Larkspur	Aug 28–Dec 7, Dec 23–Mar 13	Mar 14–Aug 27, Dec 8–22	—	Sow seeds
Marigold	Jun 15–Aug 11	May 11–Jun 14, Aug 12–Sep 2	Apr 27–Jun 23	Set out plants
Milkweed (native)	Apr 10–May 8	Mar 13–Apr 9	Mar 6–Apr 3	Set out plants
Nasturtium	Jun 21–Aug 23	Apr 14–Jun 20, Aug 24–Sep 7	—	Sow seeds
Pansy / viola	Jan 6–Apr 9, Sep 6–Dec 3	Apr 10–Sep 5, Dec 4–Jan 5	Jun 21–Sep 17, Oct 21–Jan 22	Set out plants
Purple coneflower (echinacea)	Apr 10–May 8	Mar 13–Apr 9	Jan 23–Feb 20	Set out plants
Snapdragon	Jan 16–Mar 28, Aug 13–Dec 2	Mar 29–Aug 12, Dec 3–Jan 15	Jun 11–Sep 30, Nov 14–Jan 24	Set out plants
Statice	Mar 13–27, Aug 9–30	Mar 28–Aug 8	Jan 9–23, Jun 7–28	Set out plants
Stock	Mar 1–May 11, Jul 26–Nov 13	May 12–Jul 25, Nov 14–Feb 28	May 24–Sep 11, Dec 28–Mar 9	Set out plants
Strawflower	Apr 14–28, Aug 17–Sep 6	Apr 29–Aug 16	Feb 24–Mar 10, Jun 29–Jul 19	Set out plants
Sunflower	Jun 13–Jul 25	May 11–Jun 12, Jul 26–Aug 3	—	Sow seeds
Sweet alyssum	Mar 5–May 11, Jul 19–Nov 10	May 12–Jul 18, Nov 11–Mar 4	—	Sow seeds
Sweet pea (flower)	Feb 16–Apr 11, Aug 1–Nov 23	Apr 12–Jul 31, Nov 24–Feb 15	—	Sow seeds
Zinnia	Jul 3–24	Jun 15–Jul 2, Jul 25–Aug 2	—	Sow seeds

Crops that struggle in Seattle

These need a climate Seattle doesn't have. Pots, shade cloth or a greenhouse can stretch the rules.

Banana: Has to live outdoors through winter and needs nights no colder than about 45°F; the coldest month here averages 36°F.
Bottle gourd / cucuzza: The frost-free season (about 249 days) is shorter than the 70 days it needs.
Cassava (yuca): Has to live outdoors through winter and needs nights no colder than about 40°F; the coldest month here averages 36°F.
Celosia: The frost-free season (about 249 days) is shorter than the 80 days it needs.
Chaya (tree spinach): Has to live outdoors through winter and needs nights no colder than about 40°F; the coldest month here averages 36°F.
Culantro: The frost-free season (about 249 days) is shorter than the 70 days it needs.
Ginger: The frost-free season (about 249 days) is shorter than the 270 days it needs.
Jicama: The frost-free season (about 249 days) is shorter than the 180 days it needs.
Lemongrass: The frost-free season (about 249 days) is shorter than the 88 days it needs.
Luffa gourd: The frost-free season (about 249 days) is shorter than the 105 days it needs.
Malabar spinach: The frost-free season (about 249 days) is shorter than the 65 days it needs.
Moringa: The frost-free season (about 249 days) is shorter than the 75 days it needs.
Okinawa spinach: The frost-free season (about 249 days) is shorter than the 52 days it needs.
Okra: The frost-free season (about 249 days) is shorter than the 58 days it needs.
Papaya: Has to live outdoors through winter and needs nights no colder than about 48°F; the coldest month here averages 36°F.
Passion fruit: Has to live outdoors through winter and needs nights no colder than about 44°F; the coldest month here averages 36°F.
Peanut: The frost-free season (about 249 days) is shorter than the 130 days it needs.
Pentas (Egyptian star cluster): The frost-free season (about 249 days) is shorter than the 38 days it needs.
Pigeon pea: The frost-free season (about 249 days) is shorter than the 150 days it needs.
Pineapple: Has to live outdoors through winter and needs nights no colder than about 45°F; the coldest month here averages 36°F.
Roselle: The frost-free season (about 249 days) is shorter than the 165 days it needs.
Seminole pumpkin / calabaza: The frost-free season (about 249 days) is shorter than the 108 days it needs.
Southern pea / cowpea: The frost-free season (about 249 days) is shorter than the 75 days it needs.
Sweet potato: The frost-free season (about 249 days) is shorter than the 105 days it needs.
Taro (dasheen): The frost-free season (about 249 days) is shorter than the 225 days it needs.
Winged bean: The frost-free season (about 249 days) is shorter than the 105 days it needs.
Yardlong bean: The frost-free season (about 249 days) is shorter than the 70 days it needs.

Nearby planting calendars

Portland, OR 145 mi · last frost around Feb 25
Boise, ID 405 mi · last frost around Apr 24
Sacramento, CA 625 mi · frost only briefly in winter
Billings, MT 667 mi · last frost around May 10
San Francisco, CA 679 mi · frost-free
All Washington cities

How these dates are worked out

Each crop has temperature limits and timing from university extension guides: how cold a night it can take, how much heat it can stand, how long it takes to mature, and how far before or after the last frost it goes in. Those are checked day by day against the Seattle Boeing Field station's NOAA 1991–2020 climate normals (average highs, lows, rain and frost dates). Dates are estimates for a typical year; a sheltered yard, a slope or a cold pocket can shift them by a week or two.

Weather: NOAA National Centers for Environmental Information, 1991–2020 U.S. Climate Normals. Crop timing: university extension guides (sources listed for each crop in the app). City locations: GeoNames (CC BY 4.0).