Limelight hydrangea

Asked August 6, 2018, 2:04 PM EDT

I bought this hydrangea two weeks ago. I see leaves are turning yellow and white flowers( heads) turning brown. What I’m doing wrong? Too much water or not enough? Please help! Thank you.

Jefferson County Missouri

1 Response

The weather is this area has been abnormal to say the least. We have had hot and humid days since the beginning of May. With that said, hydrangeas turn brown when there are numerous and consecutive days of very hot weather such as we have had. With the limelight hydrangea flowers won’t brown out as long as they are well watered through hot weather. All hydrangeas turn brown if they wilt too many times in hot weather. Water these shrubs deeply every few days in the heat of the summer (note that hand watering isn’t deep enough) and mulch around plants to hold moisture in the soil longer.