Zone 3 · Fruit Growing Guide

When to Plant Pumpkin
in Zone 3

Needs space — a lot of space. But few crops beat the satisfaction of growing a Halloween pumpkin. Small varieties like Baby Boo need much less room. Plant in a hill with heaps of compost.

Plant outdoors
Jun 1 – Jun 10
Start indoors
May 1 – May 15
Last Frost
~May 15
Days to harvest
90–120 days
Difficulty
Easy
Wrong season — Zone 3
Harvest window: Sep

Planting Calendar

In Zone 3, Pumpkin should be planted outdoors Jun 1 – Jun 10, after the average last frost date of approximately May 15. Start seeds indoors around May 1 – May 15 for a head start.

Very tight window. Start 3 weeks early. Small-sized varieties essential — no time for giants.

Care Guide

Sunlight
Full sun · 6–8 hrs/day
Watering
Moderate
Spacing
60–96 inches
Soil
Rich, well-draining, compost-amended
Days to maturity
90–120 days
Soil pH
6.0–7.5
plant tip · Zone 3

Very tight window. Start 3 weeks early. Small-sized varieties essential — no time for giants.

Feeding Schedule

How often
monthly
Feed type
balanced then high potassium
Key timing
switch to high-potassium when fruit sets

Heavy feeder with a long season. Compost generously at planting. Feed monthly and increase potassium as fruit develops.

Companion Planting for Pumpkin

What you plant next to pumpkin makes a real difference — some plants actively help, others compete or attract pests.

Grows well with
  • Corn
  • Beans
  • Nasturtiums
Keep away from
  • Potatoes
  • Brassicas
  • Fennel

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Common questions

In Zone 3, start pumpkin seeds indoors around May 1 – May 15, then transplant outdoors Jun 1 – Jun 10 after your last frost around May 15. Very tight window. Start 3 weeks early. Small-sized varieties essential — no time for giants.
Zone 3 has an average last spring frost of approximately May 15 and a first fall frost around Sep 15. These dates vary by specific location — use your ZIP code in the plant app for precision based on the nearest NOAA weather station.
Good companion crops for pumpkin include Corn, Beans, Nasturtiums. Avoid planting near Potatoes, Brassicas, Fennel, which can compete for nutrients or attract pests.
Pumpkin typically takes 90–120 days from transplant or direct sow to harvest in Zone 3. Expected harvest window: Sep.

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Pumpkin in other zones
Crop Guides