Curlycup Gumweed is a native, biennial (two year) plant. It can grow one to two feet tall. Curlycup Gumweed can accumulate selenium and become toxic to livestock. However, it is seldom consumed because of the sticky resinous coating. An extract from the leaves and buds is used in today’s medicine to treat whooping cough and asthma. For more information on plants, go to www.weldweeds.org.