Zone 3 – Vegetable Planting Calendar Guide

Zone 3 is the coldest of all the USDA garden zones in the United States. This zone has the shortest growing window for gardening. With a last frost date of May 15th and first frost date of September 15. These dates will vary a week or two so it’s important to watch the weather before planting. Annual minimum temperature for zone 3 is -30ºF.

Zone 3 Hardiness Dates

Last Frost Date First Frost Date
May 15th September 15th

Use your last and first frost dates to calculate your planting schedules.

Using the planting schedule below will help you get the most out of your garden. Starting seeds indoors before your last frost date will give you a jump start on the growing season. Knowing when to transplant seedlings outdoors will help to maximize your harvest.

Learning Download: What to Grow in Zone 3

Zone 3 Planting Schedule