Q.When to plant hydrangea cuttings?
I’ve got some well rooted hydrangea cuttings that I started about a month ago. I live in Creston BC (lots of orchards here, so a good growing climate.) It’s now mid Sep. Do I plant them now? They’re getting new leaves, roots are visible above the soil but they’re in 5 or 6 inch pots so have room to grow more. We do get winter but not likely to have frost before Nov. The leaves (which I cut to half size) never turned brown nor died back in any way altho’ the video on Youtube suggested they likely would.

Certified GKH Gardening Expert
We're probably in the right season for putting these into the ground. I'm guessing that you are in a cool-ish location in BC. Your new plants need to be in dormancy, so the rule of thumb is to plant them in late fall or early winter. Here's an article that may be helpful: https://www.gardeningknowhow.com/ornamental/shrubs/hydrangea/transplanting-hydrangea-bushes.htm