coarse soil. It grows with other species in the wild however, it becomes infectious if not controlled by humans. It can easily be removed by hand, although it can be controlled better by chemical means. The presence of the narrowleaf hawksbeard is damaging to the soil and other species of plants nearby as it generally takes over the area. The temperature range for germination is , with an optimum depth of . Morphology Individuals of this species are usually approximately tall, single-stemmed, yellow petals on flowers, and produce 30–70 yellow ray florets. Flowers and fruit Inflorescences of Crepis tectorum are approximately ½-¾ inches wide and are hermaphrodite, having both male and female organs. It produces small flowers from June until September. The fruit is cylindrical shaped and dark brown. The fruit of Crepis tectorum is dry and is called an achene. Methods of control Narrowleaf hawksbeard responds best to a fall application of 2,4-DB herbicide. Non-chemical methods of control include spring or fall tillage to control winter annuals and the correct use of agronomic practices such as fertilization for the control of annuals. Biological control can be achieved by insects, non-domestic animals, microorganisms, and viruses. However, the use of biological control can be risky and should always be approached with caution. References tectorum Flora of Europe Flora of temperate Asia Plants described in 1753 Taxa named by Carl Linnaeus