The answer to 'why is my shrub overgrown' is that shrubs can become overgrown for several common reasons, such as lack of regular pruning, excessive growth, or improper planting. Overgrown shrubs may appear unkempt, block sunlight, and even interfere with nearby structures or walkways.
Some key causes of an overgrown shrub include not pruning it regularly (usually once or twice a year), allowing the shrub to grow beyond its intended size and shape, or planting a variety that is too large for the available space. Symptoms of an overgrown shrub include dense, tangled branches, reduced flowering or foliage, and the shrub encroaching on other areas of the landscape.