47+ Hydrangea Flowers Turning Brown. For example, hydrangea flowers can wilt and the edges of the petals can turn brown from heat stress. There is nothing more frustrating than to work incredibly hard cultivating new plants, caring to their every need day in and day out only to see your hydrangea leaves wilting and turning brown.
But it can make you go nuts when the blooms wilt an hour after they go in water.
If your hydrangea has brown spots or rings on its leaves, there is a good chance that it is infected with hydrangea ringspot virus. The spots may also appear on the flowers, which is a sign that the. Do panicle hydrangeas make good cut flowers? Plant them in an area that receives afternoon shade to protect the flowers from the hottest part of the day.