Tickseed. Bidens sambucifolia, Aster or Sunflower Family also known as the Composite Family: ( Compositae ), Tickseed: Also Called: Tost�n, Rama Pioja. We wish to thank Wikipedia, the free encyclopedia for some of the information on this page. We share images and information with Wikipedia. Tickseed is very attractive to bees. Quick Notes: Height: Up to 20 - 40 inches tall with similar spread. Flowers: Orange, flower heads appear at the ends of 12 - 18 inch light green stems. Flowers are up to 2 1/2" across, consisting of ray florets with uneven cut margins, and about 12 orangish disk florets. Flowering Time: March - May. Sometimes all summer. Leaves: Compound, Dark Green, about 5 inches long, toothed leaflets about 3 inches long, ovate. Found: Native to Mexico, and Peru. 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 9b: to -3.8 �C (25 �F) USDA Zone 10a: to -1.1 �C (30 �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 Elevation: Naturally from 0 - 5,000 Feet. Habitat: Chalky/alkaline, Dry, Sandy, Well-drained/light soils. An ideal landscape plant in Arizona. Miscellaneous: Flowering Photo Taken April 19, 2008. Arizona-Sonora Desert Museum, near Tucson, Arizona.

We Are Proud Of Our SafeSurf Rating!