Purple Scaly Stem. Elytraria imbricata, Acanthus Family ( Acanthaceae ), Purple Scaly Stem. Also called: Purple Scalystem. We wish to thank Wikipedia, the free encyclopedia for some of the information on this page. We share images and information with Wikipedia. Quick Notes: Height: A spreading green herb, up to about 10 inches high and 16 inches spread. Flowers: The 5/8 inch blue - purple flowers bloom at the ends of thick stems. Flowering Time: April - September. Leaves: The thick, green leaves reach about 1 inches long by 1/8 inch wide and are covered with pale hairs. Found: In USA native to AZ, NM, southwestern TX; south in Mexico. to Baja C. Sur, Jal. and Qro. Found nearly throughout the state of Arizona. Hardiness: USDA Zone 8a: to -12.2 �C (10 �F) 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: 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: Can be found from 1,400 - 5,000 Feet.. Habitat: Sandy washes, slopes, canyons, floodplains, disturbed sites; especially desert creeks with water. Miscellaneous: Flowering Photos Taken April 7, 2004. Castle Creek, Arizona.

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