Mahonia Berberis

The barberry genus is in the Berberidaceae family, native to a wide area of the temperate zone and montane tropics. The species (over 600 are recognized) can be evergreen or deciduous shrubs. The genus name is derived from the Latin word for these plants, "barbaris."

Depending on the species, barberries are tolerant of all soil types and a wide range of pH. Most species need full sun, or partial sun, but some species can tolerate more shade. They spread by suckers and can form colonies causing some species to be classified as invasive so take care when choosing a shrub.

The genus now includes species formerly placed in Mahonia along with those placed in smaller, segregate genera. Some botanists, however, prefer to recognize several genera instead of just one. Some species are believed to be alternate hosts of certain rust diseases of grain crops. Some species are useful early flowing nectar plants for honeybees and bumblebees. In ornamental gardens, they are useful foliage shrubs, especially those with colorful foliage. The flowers of most species are showy, as are the fruits. Barberries are noteworthy for the yellow color in the wood of the roots and shoots; moreover, the stamens move in response to touch by a bee.

Many species are cultivated as border shrubs, accents, screens, groundcovers, hedges or small groups. The spiny species could be used as a security planting. They are useful in Asian, winter, cottage, rock or drought-tolerant gardens. Those with silvery foliage would stand out in a night garden. Some species can be used in shade gardens.

Insects, Diseases and Other Plant Problems: Leaf spots, rust, and leaf scorch from sun/wind.  Chlorosis on high pH soils; leaves can look burned but stems will regrow leaves next spring. Watch for aphids, scale and whiteflies.