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Marquette, MI Planting Calendar

The last spring frost in Marquette usually comes around May 11 and the first fall frost around Oct 26, a growing season of about 168 days. Start tomatoes indoors Mar 30 – Apr 13 and plant them outside May 25 – Jun 8.

Last spring frostMay 11
First fall frostOct 26
Growing season168 days

When to plant vegetables in Marquette

VegetableStart seeds indoorsPlant outsideFall crop
TomatoesMar 30 – Apr 13May 25 – Jun 8—
PeppersMar 23 – Apr 6Jun 1 – Jun 15—
EggplantMar 23 – Apr 6Jun 1 – Jun 15—
Cucumbers—May 25 – Jun 8—
Zucchini & summer squash—May 25 – Jun 8—
Pumpkins & winter squash—Jun 1 – Jun 15—
Green beans—May 25 – Jun 8Aug 3 – Aug 17
Sweet corn—May 25 – Jun 8—
BasilApr 13 – Apr 27May 25 – Jun 8—
LettuceMar 16 – Mar 30Apr 13 – May 25Aug 31 – Sep 14
Spinach—Mar 30 – Apr 20Aug 31 – Sep 14
Peas—Mar 30 – Apr 20Aug 17 – Aug 31
Carrots—Apr 13 – May 18Aug 3 – Aug 17
Radishes—Apr 6 – May 25Sep 14 – Sep 28
BroccoliMar 2 – Mar 16Apr 13 – Apr 27Aug 3 – Aug 17
KaleMar 16 – Mar 30Apr 6 – Apr 20Aug 17 – Aug 31
Onions—Apr 13 – Apr 27—
Potatoes—Apr 20 – May 18—
Garlic——Oct 12 – Nov 16

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

Month-by-month planting in Marquette

  1. JanuaryPlan, order seeds and prepare beds.
  2. FebruaryPlan, order seeds and prepare beds.
  3. MarchStart indoors: Tomatoes, Peppers, Eggplant, Lettuce, Broccoli, KalePlant outside: Spinach, Peas
  4. AprilStart indoors: Tomatoes, Peppers, Eggplant, BasilPlant outside: Lettuce, Spinach, Peas, Carrots, Radishes, Broccoli, Kale, Onions, Potatoes
  5. MayPlant outside: Tomatoes, Cucumbers, Zucchini & summer squash, Green beans, Sweet corn, Basil, Lettuce, Carrots, Radishes, Potatoes
  6. JunePlant outside: Tomatoes, Peppers, Eggplant, Cucumbers, Zucchini & summer squash, Pumpkins & winter squash, Green beans, Sweet corn, Basil
  7. JulyPlan, order seeds and prepare beds.
  8. AugustPlant outside: Green beans, Lettuce, Spinach, Peas, Carrots, Broccoli, Kale
  9. SeptemberPlant outside: Lettuce, Spinach, Radishes
  10. OctoberPlant outside: 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 Marquette?

The median last spring frost is May 11 and the median first fall frost is Oct 26, based on 2016–2025 weather data.

When should I plant tomatoes in Marquette?

Start seeds indoors Mar 30 – Apr 13 and set plants outside May 25 – Jun 8, once nights stay above 50°F.

When should I plant a fall garden in Marquette?

Sow or transplant cool-season crops 6 to 12 weeks before the first fall frost (around Oct 26): broccoli and carrots first, lettuce, spinach and radishes last.

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