Answer: Grevillea is from Austrailia and is hardy only to zone 9. You won't find it in any local nurseries because it isn't hardy outdoors in your gardening zone (8a). Some drought tolerant evergreen shrubs include OLIVER TWIST KOHUHU (Pittosporum tenuifolium 'Oliver Twist'), AMBER ELF DWARF BROOM (Cytisus scoparius 'Amber Elf'), BROWN-EYED ROCK ROSE (Cistus ladanifer maculatus), FURMAN'S RED AUTUMN SAGE
(Salvia greggii 'Furman's Red'), and Nandina (heavenly bamboo).
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