pumpkins in a pumpkin patch

When To Plant Pumpkins In Colorado

Colorado is a great place to grow pumpkins due to its growing zones being ideal for pumpkins. Pumpkins are a popular crop for farmers and home gardeners alike. Knowing when and how to plant pumpkins in Colorado will ensure a successful harvest toward the end of the year.

Colorado’s USDA Hardiness Zones

Colorado is divided into five USDA hardiness zones: 3, 4, 5, 6, and 7. The average annual minimum temperature in zone 3 is -30 to -40 degrees Fahrenheit, while zone 7 is 0 to 10 degrees Fahrenheit. This means the ideal time for planting pumpkins in Colorado depends on which zone you live in.

Additional Resource: Find your growing zone in Colorado

When to Start Pumpkin Seeds Indoors in Colorado

Starting pumpkin seeds indoors is a great way to get a jump start on the season. Pumpkins can be planted indoors starting 6 weeks before your final frost. Sow pumpkin seeds in potting soil 1 inch deep and keep soil damp but not waterlogged.

When to Plant Pumpkins Outdoors

Once the last spring frost has passed, it is time to plant your pumpkin seeds outdoors. For those in zones 3-5, the ideal time to plant is late May to early June. For those in zones 6-7, the ideal time to plant is mid-May to early June.

Different Varieties of Pumpkins

There is a wide variety of pumpkin types available. Some popular varieties include Jack-O-Lantern, Cinderella, Mini-Pumpkins, and White Lumina. Each variety has its own unique characteristics like size, color, and texture.

How to Care for Pumpkins in Colorado

Pumpkins require consistent watering and full sun. You should water your pumpkins 1-2 inches per week, depending on the weather. Mulching around the plants can help retain moisture. Pumpkins should also be fertilized every 4-6 weeks to keep them healthy.

When to Harvest Pumpkins in Colorado

Pumpkins are ready to harvest when their rinds are hard and their stems are completely dry. Depending on the variety, this can take anywhere from 70 to 120 days after planting. If your pumpkins are ready to harvest, you can easily pick them off the vine.

Harvesting pumpkins in Colorado can be a rewarding experience. Knowing when and how to plant pumpkins in Colorado will ensure a successful crop. With the right preparation and care, you can enjoy your pumpkins for months to come!

Cody Medina
Small Scale Farmer
Hi there! I'm Cody, a staff writer here at The Garden Magazine and a small-scale farmer living in Oregon. I've been gardening most of my life and now live on a quarter-acre farmstead with chickens, ducks, and a big garden.