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NPN Protocol Details Image

Penstemon (virgatus)

Lindsay Springer
Lead Biological Science Technician - Greenhouse Manager
USDI NPS - Rocky Mountain National Park
1000 Highway 36
Estes Park, Colorado 80517-8397
(970) 586-1252
(970) 589-1392 (fax)
Lindsay_Springer@nps.gov
http://www.ggnpa.org
Family Scientific Name: Scrophulariaceae
Scientific Name: Penstemon virgatus
Common Name: Penstemon
Ecotype: Colorado, Moraine Park (98-044s, 98-122s), Hollowell Park (98-085s)
Propagation Goal: seeds
Propagation Method: seed
ProductType: Propagules (seeds, cuttings, poles, etc.)
Time To Grow: 0
Propagule Collection: Seed cleaning technique: Seeds removed from seed heads by crushing seeds head or using tweezers. Use of screens helpful for separating seed from miscellaneous plant material.

Moraine Park (98-044s, 98-122s) collected on 10/10/98; Hollowell Park (98-085s) collected on 9/12/98.
Pre-Planting Treatments: Seed treatments: None, 30 day cold moist treatment.
Growing Area Preparation/
Annual Practices for Perennial Crops:		 Propagation Environment: Greenhouse, 65-70§F day/55§F night. Propagated on orange heat pad (set to 70§F) under tent with misters set 8 am-8 pm, with 10 sec/15 min watering intervals. One week after germination, seedlings were moved to mister area without tent.

Germination media: Fafard Germinating Mix (superfine).

Growing media: Fafard Growing Mix 2.
Establishment Phase: Sowing/planting technique: Sown in 36 pk, 3-5 seeds/slot.

Time to germination: 12-15 days.

Establishment Phase: Germination slow and uneven.

Time to potting: 1 to 1-1/2 months.

Moraine Park (98-044s, 98-122s) sowed 12/4/98; Hollowell Park (98-085s) sowed on 11/16/98.
Harvesting, Storage and Shipping: Seed storage condition: Seed stored in the greenhouse.
Other Comments: Comments: 98-044s was cold, moist treated for one month prior to planting while 98-122s was stored in the refrigerator. Hollowell was stored in greenhouse so cold treatment may or may not be necessary.

Citation:

Butler, Jennifer; Frieswyk, Christin. 2001. Propagation protocol for production of Propagules (seeds, cuttings, poles, etc.) Penstemon virgatus seeds USDI NPS - Rocky Mountain National Park Estes Park, Colorado. In: Native Plant Network. URL: https://NativePlantNetwork.org (accessed 2025/04/21). US Department of Agriculture, Forest Service, National Center for Reforestation, Nurseries, and Genetic Resources.