Ottawa's Hardiness Zone

Our records indicate the United States Department of Agriculture has given Ottawa a growing zone designation of 6a. Sometimes also called the planting zone or hardiness zone, this zone number gives you an idea of what plants can and cannot grow in Ottawa's climate. If you are looking for plants suitable for growing in the Ottawa area, head on over to our page on plants that grow well in Ottawa, OH.

Worm Composting Kit

Complete kit for starting your own worm composting system.

Seed Starting Trays

Perfect for starting seeds indoors before transplanting to your garden.

Metal Seed Storage Box

Organized storage solution for your seed collection.

Shiitake Mushroom Kit

Grow your own delicious shiitake mushrooms at home.

Wooden Chicken Coop

Spacious and secure home for your backyard chickens.

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 Ottawa is in growing zone 6a this means that plants there can survive temperatures as low as 10 to 15 degrees Fahrenheit. Plants chosen for Ottawa'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: 6a

Zip Codes: 45875

Longitude: -84.0354

Latitude: 41.0202

Lowest Avg Temperatures (F): -10 to -5

Reusable Grow Bags

Breathable fabric grow bags that promote healthy root growth for your vegetables and fruits.