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Missouri Botanical Garden PlantFinder lists Epilobium californica (California fuchsia / hummingbird’s trumpet) for USDA zones 8 to 10 in full sun to part shade and dry-to-medium moisture, blooming July to frost, and notes it tolerates Deer, Drought, Clay Soil, Dry Soil, and Shallow-Rocky Soil. Its native range is given as arid, rocky, mountainous areas of the southwestern United States as well as wetter, coastal areas in California.
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The Lady Bird Johnson Wildflower Center documents Epilobium canum (USDA symbol EPCA3) as native to AZ, CA, ID, NM, NV, OR, UT, and WY, blooming August through October, with special value to native bees and nectar that supplies hummingbirds with food for the start of their southward migration.
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A western dry-slope native — it is at its best in hot, sunny, low-water sites and is not winter-hardy in cold-climate gardens; the warmer published bound (zone 10) reflects its arid southwestern range rather than tested high-heat horticultural performance.