The kind of plants you can grow have changed slightly in most regions of Canada according to the federal government’s latest ...

Some gardeners may be able to grow palms and even cold-hardy citrus in parts of Canada, according to the federal government's ...

The plant hardiness zone map is also not the only map they produce: there are species maps, for example; there are maps showing where 62 different species of trees are growing in Canada; and they ...

When I came to the last page, it dawned on me. Yes, indeed. In full colour, there was a map of Canada. Their catalogue designations were based on the new Canadian hardiness zone map.

Gardening zones by the numbers Check the tag of any tree, shrub, or perennial and you’ll find a zone number. That is your guideline for how tough the plant will be.

Last updated in 2012, the new map codifies warming temperatures for Massachusetts’ planting zones. So what does that mean for gardeners as we head into another increasingly warm growing season?

The latest proof of warming winters comes in an update this week of the US Department of Agriculture’s plant hardiness map — a guide for would-be planters wondering how much cold their plants ...