Santa Catalina Mountain Phlox. Phlox tenuifolia, Phlox Family ( Polemoniaceae ), Santa Catalina Mountain Phlox. Also called Phlox, Vine Phlox, or Desert Phlox. We wish to thank Wikipedia, the free encyclopedia for some of the information on this page. We share images and information with Wikipedia. A perennial wirey forb with white flowers. Quick Notes: Height: Height from 6 - 10 inches and up to about 36 inches. Flowers: The flowers are about 1" wide, white with a yellow throat, tubular shape. The corolla lobes oblanceolate, erose or emarginate. Flowering Time: April - May then again sometimes from August - October. Leaves: Simple, smooth-edged, linear to lanceolate, opposite, and up to about 2 inches long. Found: Native to Arizona. 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) Soil pH requirements: 5.6 to 6.0 (acidic) 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) Sun Exposure: Full Sun Elevation: 1,500 - 4,500 Feet. Habitat: Deserts, mesas and along roadsides. Miscellaneous: Flowering Photos Taken At Castle Creek, Arizona. April 25, 2005.

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