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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

Perideridia (gairdneri)

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: Apiaceae
Family Common Name: Carrot family
Scientific Name: Perideridia gairdneri Hook. & Arn
Common Name: Gairdner's yampah
Species Code: PEGA3
Ecotype: seeds were collected in Lane Co., Oregon near Eugene
Propagation Goal: plants
Propagation Method: seed
ProductType: Container (plug)
Time To Grow: 0
Pre-Planting Treatments: Seeds were sown directly into cone-tainers filled with Sunshine#1 (a soil-less peat-based media) amended with micro-nutrients (Micro-max) and a slow-release fertilizer (Osmocote 14-14-14). Flats of cone-tainers were covered with poly-ethylene bags and placed in a walk-in cooler (35-40 degrees). Seedlings emerged after 80 days. 80% germination was observed.
Growing Area Preparation/
Annual Practices for Perennial Crops:		 When seedlings emerged, flats were removed from the cooler and placed in a greenhouse set at moderate temperatures (70 degree day/ 50 degree nights).
Establishment Phase: Seedlings germinated within one to two weeks after coming out of the cooler.
Other Comments: Trials were also conducted with no cold-moist stratification which resulted in zero germination, 6 weeks cold-moiststratification resulted in fair germination 40%. 80-90 days cold-moist stratification is optimum.

Citation:

Bartow, Amy L. 2003. Propagation protocol for production of Container (plug) Perideridia gairdneri Hook. & Arn plants USDA NRCS - Corvallis Plant Materials Center Corvallis, Oregon. In: Native Plant Network. URL: https://NativePlantNetwork.org (accessed 2025/02/25). US Department of Agriculture, Forest Service, National Center for Reforestation, Nurseries, and Genetic Resources.