Date of this Version
McCarty, M.K. and Scifres, C.J. (1969) Life cycle studies with musk thistle (Research Bulletin: Bulletin of the Agricultural Experiment Station of Nebraska No. 230)
Musk thistle (Carduus nutans L.) was added to the Nebraska noxious weed list in 1959. The objectives of this study were: (a) to determine the normal life cycle of musk thistle in Nebraska; (b) to determine the variations from the normal life cycle of musk thistle; and (c) to furnish a summary of the phenology for musk thistle in southeastern Nebraska. Observations are used freely throughout the text to describe morphological variations occurring within musk thistle that are not easily quantified.