Your Garden's Growing Season Just Changed
Natural Resources Canada updated its plant hardiness map—and Eastern Ontario gardeners now have warmer growing options.
If you've been wanting to try plants you thought couldn't survive an Ottawa winter, this year might be your opening. Natural Resources Canada just released an updated plant hardiness zone map, and the shift reflects what gardeners have been noticing for years: the city's microclimate is warming, window by window, growing season by growing season.
The update isn't a surprise to anyone who gardens seriously—last winter was milder, springs arrive earlier, and the reliability of cold snaps that used to define the region's growing limits has become less reliable. But having it officially mapped changes how you plan. Gardeners at Robert Plante Greenhouses and other local nurseries are already seeing people come in with the new map in hand, asking about plants they'd written off as impossible.
It doesn't mean frost is gone or that you can suddenly grow tropical fruit in your Barrhaven backyard. It means the boundaries have shifted slightly—some plants that needed a microclimate or a south-facing wall now have a better shot at straight ground planting. For serious gardeners, it's an annual ritual: checking the map, reassessing the zones, deciding what gambles to take. This year, you've got a bit more room to gamble.