It is important to have an idea of the approximate size at maturity of the trees and shrubs commonly used in landscape plantings. Mature size is greatly influenced by the length of the growing season, temperature, light, water, soil type, fertility, and many other factors. This makes it impossible to predict the exact mature size of a plant. Plants in shade will often grow taller with a thinner crown than ones growing in an open area. A plant not competing for light may eventually attain the same height, but is likely to be much broader.