Hydrangea Flowers Turning Brown. Hydrangea leaves are possibly turning brown and possibly foliage growth with few flowers. This is the only hydrangea to produce pollen I think and is a very good source for bees.
According to the Hyannis Country Garden the most common reason for hydrangea flowers to turn brown is that they are drying out. The white flowers show this by turning brown which is noticeable right away because the flower are white. I am trying to figure out what is causing this decline.
Normal progression of the flower.
If a hydrangea is in a place where the sun is hitting the flowers from 11 AM to 3 PM that flower will brown faster than those that are in shade during that time period. Hydrangea leaves are possibly turning brown and possibly foliage growth with few flowers. Hydrangea flower buds and flower blooms are the first things to get zapped by the shrub when there is not enough soil moisture or when it is too hot. Once the flowers start to fade or turn brown cut them off right underneath of the bloom.