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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

Helianthella (uniflora)

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: Asteraceae
Family Common Name: Sunflower family
Scientific Name: Helianthella uniflora (Nutt.) Torr. & A. Gray
Common Name: oneflower helianthella
Species Code: HEUN
Propagation Goal: seeds
Propagation Method: seed
ProductType: Propagules (seeds, cuttings, poles, etc.)
Time To Grow: 0
Target Specifications: Grow plugs to be transplanted into raised beds for seed increase.
Propagule Processing: Seeds were cleaned using a small air screen machine.
Pre-Planting Treatments: Germination trials were established with the following results:
warm stratification, 8% germination; 45 days cold-moist stratification, 84% germination; and 90 days cold-moist stratification, 98% germination.
Growing Area Preparation/
Annual Practices for Perennial Crops:		 Seeds were sown into cone-tainers filled with Sunshine#1 (a soil-less,peat-based media)amended with micro-nutrients (Micromax) and a slow-release fertilizer (Osmocote 14-14-14).
Establishment Phase: Seeds need at least 45 days of cold to germinate but 90 days is optimal. Germination will cease once seeds have been in warm temperatures for more than three weeks.

Citation:

Bartow, Amy. 2008. Propagation protocol for production of Propagules (seeds, cuttings, poles, etc.) Helianthella uniflora (Nutt.) Torr. & A. Gray seeds USDA NRCS - Corvallis Plant Materials Center Corvallis, Oregon. In: Native Plant Network. URL: https://NativePlantNetwork.org (accessed 2024/07/03). US Department of Agriculture, Forest Service, National Center for Reforestation, Nurseries, and Genetic Resources.