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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

Allium (cernuum)

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: Liliaceae
Scientific Name: Allium cernuum
Common Name: Nodding Onion
Species Code: ALCE2
Ecotype: Colorado,Sprague Lake (98-004s), Long's Peak Parking Lot (98-092s), Twin Sisters (98-082s), Alluvial Fan (98-093s)
Propagation Goal: seeds
Propagation Method: seed
ProductType: Propagules (seeds, cuttings, poles, etc.)
Time To Grow: 0
Propagule Collection: Collected at Sprague Lake on 09/16/98, Long's Peak Parking Lot on 10/07/98, Alluvial Fan on 09/21/98, Twin Sisters on 09/21/98.

Seed cleaning technique: Small black seeds simply removed from papery covering. Many seeds are not filled and are easily crushed, these won't germinate.
Propagule Processing: Germination: 50-75% at Sprague Lake.
Growing Area Preparation/
Annual Practices for Perennial Crops:		 Propagation Environment: Greenhouse, 65-70§F day/55§F night. Propagated on the heating pad (set at 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:>/b> Fafard Growing Mix 2.
Establishment Phase: Sowing/planting technique: Manually sowed in seed pack flat, 2-3 seeds/slot, cover seed lightly with germination mix.

Time to germination: 14 days.

Establishment Phase: Germination uneven and occurs over many days.

Sprague Lake sowed on 10/27/98 emerged on 11/10/98; Long's Peak Parking Lot sowed on 11/18/98, emerged on 11/30/98; Alluvial Fan sowed on 11/18/98; Twin Sisters sowed on 11/12/98, emerged on 11/30/98.
Harvesting, Storage and Shipping: Seed storage condition: Seed stored in the greenhouse.

Citation:

Butler, Jennifer; Frieswyk, Christin. 2001. Propagation protocol for production of Propagules (seeds, cuttings, poles, etc.) Allium cernuum seeds USDI NPS - Rocky Mountain National Park Estes Park, Colorado. In: Native Plant Network. URL: https://NativePlantNetwork.org (accessed 2024/05/16). US Department of Agriculture, Forest Service, National Center for Reforestation, Nurseries, and Genetic Resources.