How often do you water your containers?
I have 2 hydrangeas in large containers next to my door this year. Planning on overwintering them in the garage and keeping them in containers. Should I be watering them daily? About how much? I've been giving them about a gallon of water each time, but when I do a moisture reading it's only around a 4 and I'm thinking hydrangeas want a higher reading (7 or so maybe?) Is a gallon enough? Every day? They are in a protected area, facing east getting 2-3 hours of filtered sun a day.