Penstemon (anguineus)

Lee Riley Horticulturist USDA FS - Dorena Genetic Resource Center 34963 Shoreview Road Cottage Grove, Oregon 97424 541-915-7324 541-767-5709 (fax) leriley@fs.fed.us

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Family Scientific Name:	Scrophulariaceae
Family Common Name:	Figwort
Scientific Name:	Penstemon anguineus
Common Name:	Siskiyou beardtongue
Species Code:	PEAN3
Ecotype:	Rogue River-Siskiyou National Forest, Oregon
General Distribution:	Habitat Description: In chaparral or openings of coniferous forest on mountainsides or ridges, Transition and Canadian Zones. Distribution Range: Crater Lake National Park, Oregon, southwestward to Humboldt and Glenn Counties, California. Type locality: Shelley Creek, Del Norte County, California.
Propagation Goal:	Plants
Propagation Method:	Seed
ProductType:	Container (plug)
Stock Type:	164 ml (10 in3) container
Time To Grow:	17 weeks
Target Specifications:	Stock Type: Container seedling Root System: Firm plug in container.
Pre-Planting Treatments:	Seeds are placed in a solution of 250 mg/L GA3, soaked for 24 hours, rinsed, and soaked for an additional 4 hours in water. Seeds are sown into trays filled with stabilized medium plugs (Q-plugs). Trays are sealed inside plastic bags and placed into refrigeration at 1 to 3 °C for 30 days. Trays are checked weekly and kept moist throughout the stratification period. If mold is evident, trays should be treated with 1% hydrogen peroxide.
Growing Area Preparation/ Annual Practices for Perennial Crops:	Q-plugs are lightly covered with nursery grit. Seedlings are transplanted to target containers approximately 3 weeks following removal from stratification. Growing medium used is 40:20:20:20 peat:composted fir bark:perlite:pumice with Nutricote controlled release fertilizer (18N:6P2O5:8K2O with minors; 180-d release rate at 21C) at the rate of 0.8 gram Nutricote per 164 ml container.
Establishment Phase:	Germination is not very uniform, depending on the quality of the seeds, and can take up to 3 weeks to be complete. Following germination (while still in Q-plugs), plants are fertilized with soluble 12-2-14-6Ca-3Mg at 75 to 100 ppm for 2 weeks.
Length of Establishment Phase:	3 weeks
Active Growth Phase:	During the growing season, fertilization depends on weather and physiological needs. Soluble 20-9-20 NPK, 20-18-18 NPK, or 17-5-24 NPK at 100 to 150 ppm is applied weekly throughout the growing season.
Length of Active Growth Phase:	14 weeks
Hardening Phase:	No dry-down is done to induce dormancy. Seedlings are moved to an outdoor growing area in mid-September.
Harvesting, Storage and Shipping:	Harvest Date: Mid-October Storage Conditions: Seedlings are usually outplanted in fall. No storage except in outdoor growing area. Plants are well irrigated prior to shipping and shipped in containers.
Length of Storage:	2 to 3 weeks
References:	Dorena Genetic Resource Center Propagation Records, unpublished. USDA Natural Resources Conservation Service. Penstemon anguineus Eastw. Siskiyou beardtongue. URL: https://plants.usda.gov/core/profile?symbol=PEAN3 (accessed 10 Oct 2018). Wolfe Lab. 2014. Penstemon anguineus. URL: http://wolfelab.asc.ohio-state.edu/database/penstemon-anguineus (accessed 10 Oct 2018).

Citation:

Riley, Lee E.; Klocke, Allison. 2018. Propagation protocol for production of Container (plug) Penstemon anguineus Plants 164 ml (10 in3) container; USDA FS - Dorena Genetic Resource Center Cottage Grove, Oregon. In: Native Plant Network. URL: https://NativePlantNetwork.org (accessed 2024/07/24). US Department of Agriculture, Forest Service, National Center for Reforestation, Nurseries, and Genetic Resources.