Browse resources Displaying 1 - 2 of 2 resources Photo: Heather Stoven (Cropped from original) How to help hydrangeas weather a heat wave A heat wave can turn a hydrangea's lush green leaves and beautiful blooms brown and brittle in no time. But it doesn't have to be that way. Here's what gardeners can do to protect hydrangeas from the heat. Heather Stoven | Jul 2021 | Article Peer reviewed (Gray level) Credit: Jennifer Alexander (Cropped from original) General care for hydrangeas Look to this hydrangea how-to for advice on soil, water, pruning and more. Learn a simple pH trick that will turn blooms from pink to blue. Kristin VanHoose | Jun 2018 | Article Peer reviewed (Gray level)