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Gardening sheet   berberis fremontii
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Gardening sheet berberis fremontii


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  • 1. *Fremont’s mahonia – Berberis (Mahonia) fremontii (BER-ber-is (ma-HO-nee-uh) free-MON-tee-eye ) Family: Berberidaceae (Barberry Family) Native to: The U.S. Southwest, including foothills of the Peninsular Ranges and South and Eastern Mojave Desert; on well-drained sandy, gravelly, and rocky soils on upper bajadas and moderate slopes in Desert Chaparral, Pinyon-Juniper Woodland, Joshua Tree Woodland (3000-5000 ft. elev.). Growth characteristics: woody shrub/small tree mature height: 6-10 ft. mature width: 5-10 ft. Upright, evergreen shrub or small tree with stiff, open branch pattern and rounded overall shape. Leaves are compound, blue-green color and dull; leaflets have spine-tipped margins (like a holly). Bark is red when young; furrowed and gray when mature. Blooms/fruits: Blooms in spring or early summer – April to June. Flowers are small, bright yellow and in clusters. Flowers attract native pollinators and are sweetly fragrant. Fruits are fleshy berries, 1/3 to ¾ inch diameter, dark blue-purple when ripe. Like all Mahonias, fruits are edible but tart. Best used cooked for jellies, syrup – or birds will eat what you don’t pick. Uses in the garden: Most useful as an attractive water-wise shrub or pruned up into a tree. Fine choice for hedgerow or large screen. Adds foliage color and leaf texture to garden. Roots and bark used medicinally by Native Americans. Roots also produce a bright yellow dye. Leaves are prickly. Sensible substitute for: Non-native shrubs like holly. Attracts: Excellent habitat plant: provides cover, nectar (pollinators) and fruits for birds. Requirements: Element Requirement Sun Full sun to part-shade; probably best with afternoon shade in many local gardens. Soil Any well-drained; pH: 6.0 to 8.0 Water Drought-tolerant once established; best treated as Zone 1-2 to 2 (occasional deep water in summer). Fertilizer ½ strength probably OK, but not entirely necessary. Other Use inorganic or shallow organic mulch until established; let it self-mulch. Management: Hardy, easy care (but prickly leaves). Light pruning to hedge-shearing, if desired. Propagation: from seed: fresh, cleaned seed best; otherwise 2-3 mo. cold-moist by cuttings: yes Plant/seed sources (see list for source numbers): 13 4/1/14 * not native to western Los Angeles County, but a CA native © Project SOUND