A hardiness zone is a geographically defined area in which a specific category of plant life is capable of growing, as defined by climatic conditions, including its ability to withstand the minimum temperatures of the zone (see the scale on the right or the table below). For example, a plant that is described as "hardy to zone 10" means that the plant can withstand a minimum temperature of -1°C. A more resilient plant that is "hardy to zone 9" can tolerate a minimum temperature of -7°C. First developed for the United States by the Department of Agriculture (USDA), the use of the zones has been adopted by other nations including Canada, and Europe.

You can learn more about Hardiness Zones on Wikipedia. To determine your own Hardiness Zone number, click on one of the two following links:

Click here for an interactive map of Canadian Hardiness Zones from Natural Resources Canada (NRCAN). This page takes a moment to load.

Click here for an interactive map of USA Hardiness Zones from the US Department of Agriculture (USDA).

You can view our seed lists so that they are filtered to show only the plants which will grow in your hardiness zone. Simply select your Hardiness Zone in the pull-down menu at the top-left of the seed listings!

OR, click on your zone number below to see our full list of all seed types suited for your area: