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The Forest Service National Center for Reforestation, Nurseries, and Genetic Resources (RNGR) is a leading source of technical information for nurseries and land managers regarding production and planting of trees and other native plants for reforestation, restoration, and conservation.

 
NPN Protocol Details Image

Pseudotsuga (menziesii)

Carol and Jerry Baskin
Professors
University of Kentucky
University of Kentucky
Lexington, Kentucky 40506-0225
seedlings.uidaho.com
Family Scientific Name: Pinaceae
Family Common Name: Pine family
Scientific Name: Pseudotsuga menziesii (Mirabl.) Franco
Common Name: Douglas-fir
Species Code: PSEMEN
General Distribution: P. menziesii is found from Britiah Columbia and Alberta south to Mexico and along the Pacific coast to central California in the coast and Sierran ranges.
Propagation Goal: plants
Propagation Method: seed
ProductType: Container (plug)
Time To Grow: 0
Propagule Processing: Seed dormancy is physiological dormancy.
Pre-Planting Treatments: Seeds are placed in cold moist stratification for 0 to 120 days, 28 days.
Germination occurs at 20 C and 30D/20N C alternating temperature cycle.
Germination was greater in light than dark.
References: Allen, G. S. (1958). Factors affecting the viability and germination behavior of coniferous seed. II. Cone and seed maturity, Pseudotsuga menziesii (Mirb.) Franco. For. Chron. 34, 275-282.
Richardson, S. D. (1959). Germination of Douglas-fir seed as affected by light, temperature, and gibberellic acid. For. Sci. 5, 174-181.
Li, X. J., Burton, P. J. and Leadem, C. L. (1994). Interactive effects of light and stratification on the germination of some British Columbia conifers. Can J. Bot. 72, 1635-1646.
Table 10.35 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, Jerry M.; Baskin, Carol C.. 2002. Propagation protocol for production of Container (plug) Pseudotsuga menziesii (Mirabl.) Franco plants University of Kentucky Lexington, Kentucky. In: Native Plant Network. URL: https://NativePlantNetwork.org (accessed 2025/02/24). US Department of Agriculture, Forest Service, National Center for Reforestation, Nurseries, and Genetic Resources.