Trixis. Trixis californica, Aster or Sunflower Family ( Asteraceae ) also known as the Composite Family: ( Compositae ), Trixis: Also Called: American Threefold, California Trixis. We wish to thank Wikipedia, the free encyclopedia for some of the information on this page. We share images and information with Wikipedia. Trixis californica is an evergreen sub-shrub to shrub, up to 3 1/2 feet tall and 1 to 3 feet wide; bright green. It has lanceolate rigid leaves, 2 inches long and 1/2 inches wide. Trixis has yellow, two-lipped flowers. The outer lip is 3-toothed, the inner lip 3-cleft. It is native to the USA (California to Texas), and northern Mexico, at elevations from 800 to 5000 feet. It needs little water when established, it is very drought tolerant, it needs good drainage. Quick Notes: Height: Up To about 36 inches tall and about 48 inches wide. Flowers: 1 1/2 - inch, golden-yellow two-lipped, the outer lip 3-toothed, the inner lip 3-cleft; achene densely hispidulous, subrostrate, pappus of numerous straw-colored bristles. Flowering Time: February to October but depending on winter conditions, it can flower almost year - round. Leaves: Dark - green, alternate, lanceolate, slightly toothed (or smooth-edged), densely sessile-glandular beneath leaves grow to 2 inches long 1/2 inch wide. Very short hairs. Foul odor when crushed. Found: The USDA claims it is native to the USA (AZ, CA, NM, TX). It is also native to regions northwestern Mexico; Baja Norte, Baja California, Chihuahua, Coahuila, Sonora, Tamaulipas, & Zacatecas. Hardiness: USDA Zone 8b: to -9.4 �C (15 �F) USDA Zone 9a: to -6.6 �C (20 �F) USDA Zone 9b: to -3.8 �C (25 �F) USDA Zone 10a: to -1.1 �C (30 �F) USDA Zone 10b: to 1.7 �C (35 �F) Soil pH requirements: 6.1 to 6.5 (mildly acidic) 6.6 to 7.5 (neutral) 7.6 to 7.8 (mildly alkaline) 7.9 to 8.5 (alkaline) 8.6 to 9.0 (strongly alkaline) Sun Exposure: Full Sun Sun to Partial Shade Light Shade Elevation: 0 to 3,281 feet in California. Northern Mexico, at 2,000 to 5,000 feet. Habitat: Dry rocky slopes, washes, desert flats, and canyons. Miscellaneous: Photos Taken: Arizona-Sonora Desert Museum. April 19, 2008.

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