San Marcos Hibiscus Flowers.	San Marcos Hibiscus Flower.
San Marcos Hibiscus Flower.	San Marcos Hibiscus Leaves.

San Marcos Hibiscus. Gossypium harknessii, Mallow Family ( Malvaceae ) San Marcos Hibiscus: Also Called: Algod�n, Cimarr�n. We wish to thank Wikipedia, the free encyclopedia for some of the information on this page. We share images and information with Wikipedia. An evergreen shrub, growing moderately fast to about 3 feet tall with a 4 feet spread; dark green broad shiny leaves. Sun Exposure: Full sun to part shade. Quick Notes: Height: Evergreen bush slowly growing to about 3 to 6 feet tall and 3 to 5 feet wide. Flowers: Bright yellow flowers, 2 inches wide, with 5 red dots, from late spring to the fall. Blooming Time: Late spring through summer, Especially May - June. They reflower from August to frost, in response to the summer rains. Leaves: Cordate broad shiny. Found: Native to Baja California, Mexico. Elevation: Native from 0 - 2,500 feet. Hardiness: 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) USDA Zone 11: above 4.5 �C (40 �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 Partial Shade Habitat: Alkaline, well-drained/light soils. An ideal landscape plant in Arizona. Miscellaneous: Flowering Photos Taken May 18, 2006. Gilbert, Arizona.