References

Coombs, E. M., Coombs, J. K. Clark, G. L. Piper, and A. F. Cofrancesco, Jr. (eds). Biological control of invasive plants in the United States. Oregon State University Press, Corvallis. 467 pp.

Crompton, C.W., I.V. Hall, K.I.N. Jensen, and P.D. Hilderbrand. 1988. The biology of Canadian weeds. 83. Hypericum perforatum L. Canadian Journal of Plant Science. 68: 149-162.

Mitch, L.W. Intriguing world of weeds: Common St. Johnswort. 1994. Weed Technology. 8: 658-661.

Piper, G.L. 1999. St. Johnswort. In: Sheley, R.L. and J.K. Petroff (eds.). Biology and Management of Noxious Rangeland Weeds. Oregon State Press. Pages 350-361.

< Back to Ecology and Management of Common St. Johnswort

Last Modified: 07/27/2007