Mahonia aquifolium is a broadleaf evergreen shrub valued for glossy, holly-like leaves, bright yellow spring flower clusters, and grape-like blue berries. You can use it to bring year-round structure to woodland borders, shade gardens, and foundation plantings.
Give it part shade to shade for best performance. While it can take some sun, it generally looks and grows best with protection from hot afternoon exposure and drying winds. Plant it where it has room to mature, and expect it to sucker over time and form colonies unless you remove new shoots.
For easiest establishment, plant in moist, organically rich, well-drained soil that leans acidic to neutral. Water regularly the first season; once established, it is more tolerant of dry periods, but it still appreciates occasional deep watering during extended drought. Mulch to keep roots cool and soil evenly moist.
In spring, the mildly fragrant flowers are followed by edible, tart berries that also attract birds. This shrub is commonly described as deer tolerant or deer resistant. If you need to prune, do it after flowering to avoid removing the next season's blooms and fruit.