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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

Heracleum (maximum)

Carol and Jerry Baskin
Professors
University of Kentucky
University of Kentucky
Lexington, Kentucky 40506-0225
seedlings.uidaho.com

Family Scientific Name: Apiaceae
Family Common Name: Carrot family
Scientific Name: Heracleum maximum Bartr.
Common Synonym: Heracleum lanatum Michx.
Common Name: Cow parsnip
Species Code: HERSPO
Propagation Goal: plants
Propagation Method: seed
ProductType: Container (plug)
Time To Grow: 0
Propagule Processing: Seeds exhibit deep complex morpho-physiological dormancy.Low temperatures stimulate the breakdown of proteins into nitrogenous compounds and the formation of amino acids beneficial to embryo growth on synthetic media.
Seeds are placed in cold moist stratification for 112 days.Germination occurs at 22D/17N C alternating temperature cycle.
References: Stokes, P. (1952). A physiological study of embryo development in Heracleum sphondylium L. 2. The effect of temperature on after-ripening Ann. Bot. 16, 571-576.
Stokes, P. (1953). The stimulation of growth by low temperature in embryos of Heracleum sphondylium L. Journal of Experimental Botany 4:222-234.
Stokes, P. (1953). A physiological study in the embryo development of Heracleum sphondylium L. Ann. Bot. 17, 157-169.
McDonough, W. T. (1969). Effective treatments for the induction of germination in mountain rangeland species. Northw. Sci. 43, 18-22

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.. 2006. Propagation protocol for production of Container (plug) Heracleum maximum Bartr. plants University of Kentucky Lexington, Kentucky. In: Native Plant Network. URL: https://NativePlantNetwork.org (accessed 2024/07/03). US Department of Agriculture, Forest Service, National Center for Reforestation, Nurseries, and Genetic Resources.