QuestionsHow to growTrees and ShrubsWateringHydrangea leaves looking pale 0 Vote Up Vote Down Ronnie Hay asked 16 years ago Several hydrangeas, growing in pots, have very pale, almost whitish, leaves, not the healthy green they might be. Some deficiency? Many Thanks Ronnie 1 Answers 0 Vote Up Vote Down Gerry Daly Staff answered 7 years ago Hydrangeas in pots need plenty of water and feeding every two or three weeks.