Control Practices for Canada Thistle, Botany & Plant Pathology, Purdue U.Roots for thistle weeds - love the flower, hate the plant!
Basil Blight Threatens Pesto Lovers
A potentially fatal fungal disease called downy mildew has been attacking basil plants in New York, New Jersey, Ohio and Florida. Gardeners are worried that it could spread farther throughout the summer. Margaret McGrath, an associate professor of plant pathology at Cornell University, says that at first sign of the blight, make pesto and freeze it.