Upright oval to arching habit; dense growth
Full sun, for dense habit. Well drained soils. Appears to have considerable heat tolerance.
The species forms a 6 to 10 foot mound of dense branches and foligage which makes it a good barrier or hedge. The lustrous dark green foliage is attractive throughout the growing season. Abundant yellow flowers are followed by bluish, black oval fruits into the fall.
Glossy dark green year round. Alternately branched with 1, 3, or 5 leaves, 2 to 3 inches long at a node.
Specimen plant in small gardens and group plantings Also makes ab excellent hedge or barrier plant due to the stiff branches and the lethal thorns. A bird-attracting plant
Stems yellow brown in color with bright yellow inner bark. Stems armed with .5 to 1.25 inches long, three parted spines.
Borne in the axils of the leaves in groups of 8 to 15, about .25 inches each. The clear yellow flowers have a mild fragrance that is desirable but the evergreen foliage hides much of the floral display in March - April.
Bluish black, but covered with a glacous bloom. Oval and .25 inches long.
'Nana' - Grows about half the size of species and forms a solid mound.
'Spring Glory' - brilliant coloration to the new shoot growth; leaves and stems are tinted red to bronze-red.