Protocol Information
Carol and Jerry Baskin
Professors
University of Kentucky
University of Kentucky
Lexington, Kentucky 40506-0225
Family Scientific Name: Scrophulariaceae Family Common Name: Figwort family Scientific Name: Penstemon grandiflorus Nutt. Common Name: Large beardtongue Species Code: PENGRA General Distribution: P. grandiflorus is found from Indiana west to North Dakota and Wyoming and south to central Texas. it grows is sandy and loamy soils in prairies. Propagation Goal: Plants Propagation Method: Seed Product Type: Container (plug) Propagule Processing: Seeds exhibit physiological dormancy. Pre-Planting Treatments: Seeds are placed in cold moist stratification for 105 days. Germination occurs at 33D/19N C alternating temperature cycle. References: Salac, S. S. and Hesse, M. C. (1975). Effects of storage and germination conditions on the germination of four species of wild flowers. J. Amer. Soc. Hort. Sci. 100, 359-361.
Table 10.22 In: Baskin, C.J. and Baskin, J.M. Seeds: Ecology, Biogeography and Evolution in Dormancy and Germination, Academic Press, 1998. Chapter 10: A Geographical Perspective on Germination Ecology: Temperate and Arctic Zones, pages 331 to 458.
Citation: Baskin, Carol C.; Baskin, Jerry M. 2002. Propagation protocol for production of container Penstemon grandiflorus Nutt. plants; University of Kentucky, Lexington, Kentucky. In: Native Plant Network. URL: http://www.nativeplantnetwork.org (accessed 16 January 2009). Moscow (ID): University of Idaho, College of Natural Resources, Forest Research Nursery.