Longleaf Mahonia Cascade Mahonia
Mahonia nervosa
Berberidaceae · broadleaf · native
You spot Longleaf Mahonia as a low 1-2 foot groundcover displaying prominent veins on long compound leaves that cluster at stem tips. The erect elongated clusters of small yellow flowers appear in spring, followed by waxy blue berries. This native spreads slowly by rhizomes to form colonies in the forest understory throughout the Pacific Northwest.
Plant Longleaf Mahonia in partial shade with well-drained soil and low to moderate moisture. This slow-growing groundcover requires minimal maintenance. The root system allows full recovery after renovation pruning. Winter foliage can turn purple, adding seasonal color. Use as an understory planting or for slope stabilization. Superior hardiness and extreme adaptability make this an excellent choice for difficult shaded sites.
Quick Facts
Phenological Calendar
| Stage | Typical Window |
|---|---|
| New growth flush BBCH 11 | Feb 15-Mar 15 |
| Bloom start BBCH 61 | Apr 1-Apr 30 |
| Bloom end / petal fall BBCH 69 | Apr 15-May 15 |
| Fruit/seed development BBCH 71 | Mar 15-May 31 |
| Fruit/seed maturity BBCH 85 | Jun 1-Aug 31 |