Help the laurel bushes next to my hydrangea !
My sad looking hydrangea is sitting next to a hedge of laurel. The two laurel plants next to the hydrangea are looking very sad as well. We had a company come in about a month ago and pressure wash the outside of our house. Would that have caused these laurel/hydrangea to look like this? Anything we can do to help them?
It is possible that the plants may have been affected by the power washing. This can depends on the active ingredients in the product. You have to use products that are safe on plant material.
We notice some yellowing on the cherry laurels. This may be fall color and you may see some leaf loss. Hydrangeas can be susceptible to diseases such as powdery mildew or multiple fungal leaf spots later in the season, but they are generally nothing to be too concerned about and do not kill the plant. They can look tired and ratty this time of year. Hydrangeas in general grow best in morning sun and afternoon shade in a well drained soil with good air circulation. Pick up affected fallen leaves this fall and discard. Hopefully, given good airflow, you will not see it next season.
All you can do is keep the plants well watered up until the ground freezes and prune any dead plant material. Keep mulch no thicker than several inches and away from the base of the shrubs.