Agalinis - A root parasite on loblolly pineThis article is part of a larger document. View the larger document here.
Loblolly pine (Pinus taeda L.) is the most widely planted pine species in the Southern United States due to its ability to grow well on many different sites. After a tree is planted, insects and disease can have an impact by reducing growth that sometimes leads to mortality. Parasitic plants can also reduce the growth of loblolly pine by attaching to the roots. Over the years, several publications have documented the devastating impact Seymeria (Seymeria cassioides Orobanchaceae) can have on loblolly pine. The related fascicled gerardia or purple false foxglove (Agalinis fasciculata Orobanchaceae) has recently has been found in numerous locations in young loblolly pine stands. This paper provides information on its impact on loblolly pine, how to identify A. fasciculata, where the plant has been found, and ways to control it