My hydrangea has spent winter in our unheated garage. Do I take it out now, in April, in the area north of Chicago? Also, it’s been in the pot maybe 2-3 years, and I know it needs to be repotted before it gets much new growth. By what point should I repot it?
Thanks for asking these great questions! You’ll want to keep your potted hydrangea in your unheated garage until after the final spring frost which in your area is around Mother’s Day. I know it’s so tempting when we have occasional sunny days in early spring to bring those hydrangeas back outside, but with your nighttime temperatures still below freezing, you’ll need to wait a bit longer to be safe.