If you’re interested in a needled evergreen as a boxwood alternative, check out the similarly sized American arborvitae "Golden Globe." It reaches a height and width of 2 to 4 feet and likes sun or partial shade. The Missouri Botanical Garden classifies it as a low-maintenance plant that tolerates a wide variety of soils. It displays yellow-green foliage in a rounded shape. Water "Golden Globe" deeply during hot, dry weather.
The alpine currant takes on the mounded form of the boxwood, with green leaves in summer and fall. The "Green Mound" cultivar grows 2 to 3 feet tall, while the "Spreg" cultivar reaches 3 to 5 feet. This deciduous European native can tolerate dry sites and alkaline soil. The common snowberry also has a rounded form, with a mature height and width of 3 to 6 feet. It likes full sun or partial shade and well-drained soil. Its green foliage in the growing season turns hues of yellow in the fall.
The "Shamrock" inkberry offers an evergreen alternative to the boxwood. It grows 3 to 4 feet tall and wide in a compact, rounded form and needs full sun or partial shade. It prefers moist, acidic soil. The inkberry has dark-green leaves and inconspicuous flowers. The "Carol Mackie" daphne is a deciduous shrub that takes on a rounded form as it reaches a height of 2 to 3 feet. "Daphnes are often slow to establish and are best left undisturbed once planted,” advises Missouri Botanical Garden. The plants need partial shade, well-drained soil and a site protected from winter winds. The daphne produces pink flowers in late spring and features variegated foliage.
Wintercreeper euonymus "Emerald ‘n Gold" is an evergreen that likes full sun and needs regular watering. It offers yellow-and-green foliage throughout the year and assumes a dense, mounding form. Although it blooms in the spring, the flowers are unremarkable. The shrub grows at a moderate pace.
The Carissa holly is a compact, dense shrub with dark-green leaves. This evergreen grows at a moderate rate and likes full sun. It grows 3 to 4 feet tall and wide. The Suwanee River privet is another evergreen shrub which enjoys full sun. It grows slowly up to 4 feet tall and 3 wide. It has a compact growth habit and produces fragrant white flowers in the spring.