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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

Conioselinum (Pacifica)

Amy Bartow
Seed and Plant Production Manager
USDA NRCS - Corvallis Plant Materials Center
3415 NE Granger Ave
Corvallis, Oregon 97330
(541) 757-4812 ext 103
(541) 757-4733 (fax)
amy.bartow@or.usda.gov
http://plant-materials.nrcs.usda.gov/orpmc
Family Scientific Name: Pinaceae
Family Common Name: Pine
Scientific Name: Conioselinum Pacifica
Common Synonym: Tsuga heterophylla
Common Name: pacific hemlock
Species Code: COPA
Ecotype: Coastal ecotype from Clatsop Co, OR
Propagation Goal: plants
Propagation Method: seed
ProductType: Container (plug)
Stock Type: stubby containers
Time To Grow: Weeks
Target Specifications: Well-developed crowns, roots and rhizomes filling the soil profile in its container.
Pre-Planting Treatments: The Pacific Hemlock seeds in our research did not germinate at a higher percent from receiving a warm treatment prior to the cold (35F) treatment, so we conclude that this species will germinate after 90 days of cold-moist stratification. Our highest germination was 47% in the seeds that spent 90 days in the cooler before heading to the 75F warm growth cooler.

Citation:

2014. Propagation protocol for production of Container (plug) Conioselinum Pacifica plants stubby containers; USDA NRCS - Corvallis Plant Materials Center Corvallis, Oregon. In: Native Plant Network. URL: https://NativePlantNetwork.org (accessed 2025/04/25). US Department of Agriculture, Forest Service, National Center for Reforestation, Nurseries, and Genetic Resources.