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ARIZONA-SONORA DESERT MUSEUM PLANT CARE INFORMATION Arrowweed or Cochinilla Pluchea sericea DESCRIPTION: Arrowweed is an upright shrub often growing 7-9 feet tall with several long, straight, stiff stems per plant. This evergreen shrub with small blue-green leaves spreads slowly by rhizomes. The stems branch towards the tips, providing a straight, stiff shaft suitable for making arrows and spears. Pink to purple composite flowers bloom in the spring and early summer. Butterflies are attracted the flowers for their nectar. Arrowweed is a common component of streamside communities and often forms dense thickets along streams and in washes and canyons in the Lower Sonoran and Mojave Desert Scrub habitats. It tolerates dryer landscape usage well. RECOMMENDED USE: Can be used as a screen, barrier or background, and to attract wildlife. CULTURE: Hardiness: Down to at least 20F. Sun tolerance: Full sun to part shade. Watering and feeding: Low to moderate water use. No need to fertilize. Soil requirements: Most soils will do. Pruning: As needed to shape and control at any time.