Hydrangeas are one of those hardy perennials that can feel almost magical: One year, your neighbor has a surge of sky-blue blossoms, the next they’re a blushing pink. But hydrangeas changing colors ...

Changing your hydrangea flowers to blue, pink or purple isn't a magic trick. It's a doable science experiment. Macy is a writer on the AI Team. She covers how AI is changing daily life and how to make ...