Mahonia is a massive, upright, evergreen shrub with leaves that can be up to 45 centimeters long and consist of 17 to 21 tough, spiny leaflets. The yellow, cup-shaped, and slightly scented flowers are carried in long sprays at the ends of the branches, first upright and then spreading, and are followed by black, juicy, oval berries.
The ultimate height of the mahonia is 2.5 to 4 meters tall and 2.5 to 4 meters wide. It takes 10 to 20 years for the mahonia to reach its ultimate size.
Soil types of chalk, clay, loam and sand are ideal, so long as it is moist but well-drained. The soil can be acidic, neutral or alkaline. Position in full shade to full sun, in an exposed or sheltered location.
Planting & Care
Add well-rotted compost to a large hole. Place the rootball of the mahonia in the hole just below the surface of the soil and firm in well.
Apply a mulch of well-rotted garden compost or manure around the plant’s base in spring and autumn to encourage bushy growth and prune every other year.