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Can You Grow Zucchini in Colorado?

US · USDA Zone 5b · zones 3a, 3b, 4a, 4b, 5a, 5b, 6a, 6b

Grows well here

Zucchini thrives here and is one of the easiest most productive crops you can grow.

Plant zones

4a–11b

Colorado last frost

early April

Colorado first frost

late October

Days to harvest

45–60 days

When to plant Zucchinis in Colorado

Start indoors

Mar 17

Transplant

Apr 7

Harvest

May 22 – Jun 6

Dates are approximate, based on Colorado's average frost dates. Your exact yard may vary by microclimate.

About Zucchini

One of the most productive garden plants — a single zucchini plant can yield more than a family can eat at peak season.

Direct sow after last frost. Give each plant 2-4 sq metres of space. Water at the base to prevent fungal disease. Pick frequently to keep the plant producing.

Full zucchini growing guide →

Gardening in Colorado

Colorado has a semi-arid mountain climate with intense sunshine and low humidity. Front Range cities like Denver are Zone 5-6; higher elevations are Zones 3-4.

See what grows well in Colorado →

Frequently asked questions

Can you grow Zucchini in Colorado?

Zucchini thrives here and is one of the easiest most productive crops you can grow.

What zone is Colorado?

Colorado spans USDA Zone 5b (3a, 3b, 4a, 4b, 5a, 5b, 6a, 6b).

When do you plant Zucchinis in Colorado?

Plant Zucchinis around early April (start indoors Mar 17), harvest May 22 – Jun 6.