WE had landscaping done about 5 years ago and had some nine bark planted in front of the house. They have been very full of leaves and colorful, but this spring I noticed that there are some branches with leaves all the way and other's with few leaves and some branches that just look dead. They are on the sunny side of the house. We have watered them a little more lately because it gets so hot there. I am just wondering-if I should trim the bushes back or wait and see if they produce more foliage. I hope we don't have to think of replacing them . They give should good color . Do you know if there is a major problem ,if so have can i manage it?
It may be a simple fertilization issue. This article will help in the meantime: https://www.gardeningknowhow.com/ornamental/shrubs/ninebark/growing-ninebark-shrubs.htm