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Southern California Black Walnut
An endangered large tree that grows up to 75 feet tall and wide. It can be grown as a single or multi trucked tree. Yellow flowers bloom in the spring. It goes deciduous in the winter. Do not plant other species too close because the toxins in the walnut seeds will prevent other plants from growing near this tree.
It is best to prune this tree in the winter. Some trees have basal burka that will allow the plant to resprout after a fire.
Plant with: Scrub Oak (Quercus berberidifolia), Coast Live Oak (Quercus agrifolia), Red Willow (Salix laevigata), Mountain Mahogany (Cercocarpus betuloides), Virgin's Bower (Clematis ligusticifolia), California Wildrose (Rosa californica), Riverbank Lupine (Lupinus latifolius), Climbing Penstemon (Keckiella cordifolia), Blue Elderberry (Sambucus nigra ssp. caerulea)
- Full Sun to part shade
- Tolerant of clay soil
- Fast, medium, and slow drainage
- Likes moisture
- Attracts birds and butterflies
- Deer resistant
- Native to California