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Protocol Information

Carol and Jerry Baskin
University of Kentucky
University of Kentucky
Lexington, Kentucky 40506-0225

Family Scientific Name: Polygonaceae
Family Common Name: Buckwheat family
Scientific Name: Polygonum douglasii Greene
Common Name: Douglas' knotweed
Species Code: POLDOU
General Distribution: P. douglasii is found from British Columbia to Colorado. There are 7 recognized botanical varieties.
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 60 days. Germination occurs at 15D/5N C alternating temperature cycle. Germination was greater in light than on dark.
References: Reynolds, D. N. (1984). Alpine annual plants: Phenology, germination, photosynthesis, and growth of three Rocky Mountain species. Ecology 65, 759-766.
Table 10.33 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.

Baskin, Carol C.; Baskin, Jerry M. 2002. Propagation protocol for production of container Polygonum douglasii Greene plants; University of Kentucky, Lexington, Kentucky. In: Native Plant Network. URL: http://www.nativeplantnetwork.org (accessed 4 September 2015). Moscow (ID): University of Idaho, College of Natural Resources, Forest Research Nursery.