Grafton's Hardiness Zone

Our records indicate the United States Department of Agriculture has given Grafton a growing zone designation of 5a. Sometimes also called the planting zone or hardiness zone, this zone number gives you an idea of what plants can and cannot grow in Grafton's climate. If you are looking for plants suitable for growing in the Grafton area, head on over to our page on plants that grow well in Grafton, IA.

Small Greenhouse Kit

Compact greenhouse perfect for small spaces.

Raised Garden Planter

Elevated planter for easy access and better drainage.

Steel Hori Hori Weeding Knife

Versatile Japanese-style gardening knife for weeding and planting.

Hoeing Ain't Easy Garden Sign

Fun and decorative garden sign to add personality to your space.

Metal Arbor Trellis

Decorative arbor trellis for climbing plants and garden entrance.

Understanding your growing zone is very important because it is a measure of the lowest temperature that a plant can survive, helping you to decide what plants would grow best in your particular climate. Since Grafton is in growing zone 5a this means that plants there can survive temperatures as low as 10 to 15 degrees Fahrenheit. Plants chosen for Grafton's climate should be chosen with this in mind or plants should be moved inside to keep their core temperature in the right range if necessary.

USDA Growing Zone: 5a

Zip Codes: 50440

Longitude: -93.0687

Latitude: 43.3307

Lowest Avg Temperatures (F): -20 to -15