Shrubs come in a wide range of sizes, from low-growing groundcovers to taller varieties that can reach up to 20 feet. The exact size of a particular shrub will depend on the species and the growing conditions. For example, a plant grown in full sun will typically be smaller than one grown in partial shade. In general, however, most shrubs fall into one of three categories: low (less than 3 feet), medium (3-6 feet), or tall (more than 6 feet). When selecting a shrub for your garden, choose one that will fit the available space. With so many different heights to choose from, it’s easy to find a shrub that will suit your needs.