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Bellevue, WA Planting Calendar

The last spring frost in Bellevue usually comes around Mar 12 and the first fall frost around Nov 9, a growing season of about 242 days. Start tomatoes indoors Jan 29 – Feb 12 and plant them outside Mar 26 – Apr 9.

Last spring frostMar 12
First fall frostNov 9
Growing season242 days

When to plant vegetables in Bellevue

VegetableStart seeds indoorsPlant outsideFall crop
TomatoesJan 29 – Feb 12Mar 26 – Apr 9—
PeppersJan 22 – Feb 5Apr 2 – Apr 16—
EggplantJan 22 – Feb 5Apr 2 – Apr 16—
Cucumbers—Mar 26 – Apr 9—
Zucchini & summer squash—Mar 26 – Apr 9—
Pumpkins & winter squash—Apr 2 – Apr 16—
Green beans—Mar 26 – Apr 9Aug 17 – Aug 31
Sweet corn—Mar 26 – Apr 9—
BasilFeb 12 – Feb 26Mar 26 – Apr 9—
LettuceJan 15 – Jan 29Feb 12 – Mar 26Sep 14 – Sep 28
Spinach—Jan 29 – Feb 19Sep 14 – Sep 28
Peas—Jan 29 – Feb 19Aug 31 – Sep 14
Carrots—Feb 12 – Mar 19Aug 17 – Aug 31
Radishes—Feb 5 – Mar 26Sep 28 – Oct 12
BroccoliJan 1 – Jan 15Feb 12 – Feb 26Aug 17 – Aug 31
KaleJan 15 – Jan 29Feb 5 – Feb 19Aug 31 – Sep 14
Onions—Feb 12 – Feb 26—
Potatoes—Feb 19 – Mar 19—
Garlic——Oct 26 – Nov 30

Dates count from the median frost dates (2016–2025) for Bellevue. In a cold spring, wait a week; in a warm one you can go a week early.

Month-by-month planting in Bellevue

  1. JanuaryStart indoors: Tomatoes, Peppers, Eggplant, Lettuce, Broccoli, KalePlant outside: Spinach, Peas
  2. FebruaryStart indoors: Tomatoes, Peppers, Eggplant, BasilPlant outside: Lettuce, Spinach, Peas, Carrots, Radishes, Broccoli, Kale, Onions, Potatoes
  3. MarchPlant outside: Tomatoes, Cucumbers, Zucchini & summer squash, Green beans, Sweet corn, Basil, Lettuce, Carrots, Radishes, Potatoes
  4. AprilPlant outside: Tomatoes, Peppers, Eggplant, Cucumbers, Zucchini & summer squash, Pumpkins & winter squash, Green beans, Sweet corn, Basil
  5. MayPlan, order seeds and prepare beds.
  6. JunePlan, order seeds and prepare beds.
  7. JulyPlan, order seeds and prepare beds.
  8. AugustPlant outside: Green beans, Peas, Carrots, Broccoli, Kale
  9. SeptemberPlant outside: Lettuce, Spinach, Peas, Radishes, Kale
  10. OctoberPlant outside: Radishes, Garlic
  11. NovemberPlant outside: Garlic
  12. DecemberPlan, order seeds and prepare beds.

Tools for this season

Seed starting kitTrays with humidity domes for starting seeds indoors.See options on AmazonLED grow lightKeeps indoor seedlings short and sturdy.See options on AmazonFrost clothCovers tender plants on a surprise frost night.See options on AmazonSoil thermometerCheck the soil at 4 inches before you spread anything.See options on Amazon

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Frequently asked questions

When is the last frost in Bellevue?

The median last spring frost is Mar 12 and the median first fall frost is Nov 9, based on 2016–2025 weather data.

When should I plant tomatoes in Bellevue?

Start seeds indoors Jan 29 – Feb 12 and set plants outside Mar 26 – Apr 9, once nights stay above 50°F.

When should I plant a fall garden in Bellevue?

Sow or transplant cool-season crops 6 to 12 weeks before the first fall frost (around Nov 9): broccoli and carrots first, lettuce, spinach and radishes last.

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