Biennial & Perennial Weeds
SPINY ASTER, WOLFWEED Leucosyris spinosa Life Cycle: Perennial Plant Description:
A native, warm-season perennial that can grow to more than 3 feet tall. It is also called wolfweed, Mexican devil- weed or devilweed aster. The plant is characterized by green stems with stripes, occasional spines on the stems and solitary sunflowers that have white petals and small, yellow flowers in the center disk. Small leaves are present for a brief period in the spring when the young stems are succulent. The leaves drop off after 2 to 3 weeks, and the
stems begin conducting photosynthesis. The plant flowers in the summer and fall. Treatment: Apply 2.0 pints of Surmount ® herbicide
per acre or 1.0 to 1.5 pints per acre of PastureGard ® HL herbicide per acre. Shred plants during winter. Apply when plant regrowth is at least 10 to 12 inches tall. Sequential applications may be needed.
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