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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

Viola (nephrophylla)

Derek Tilley
PMC Manager
USDA NRCS - Aberdeen Plant Materials Center
PO Box 296
Aberdeen, Idaho 83210
208-397-4133 x 104
derek.tilley@id.usda.gov
http://plant-materials.nrcs.usda.gov/idpmc

Family Scientific Name: Violaceae
Family Common Name: Violet Family
Scientific Name: Viola nephrophylla Greene
Common Name: Northern Bog Violet
Species Code: VINE
Ecotype: Northeast Utah, Colorado Plateau
General Distribution: North America with exception of the Southern United States
Propagation Goal: Plants
Propagation Method: Seed
ProductType: Container (plug)
Propagule Collection: Live mature plants were field harvested from native stands. Plants and surrounding soil was hand-dug with a shovel in late spring while soil was still saturated. Plants were transported and stored in a damp cooler until transplanting into greenhouse flats filled with a commercial soil medium. In 3 to 4 months the plants produced cleistogamous flowers. Within a few days, capsules dehisced and spread seed on the soil surface.
Pre-Planting Treatments: In late fall the flats were put into heavy garbage sacks, tied off, and left outside from November to late February where temperatures ranged from -20 C to 0 C. for most of the winter the flats were buried in several centimeters of snow.
Establishment Phase: In late February the flats were brought into a greenhouse with a 12 hour light/dark cycle and temperatures of approximately 20 C. Numerous seedlings were visible within 7 days. Clumps of seedlings and soil were scooped out and transplanted into larger pots while still in the cotyledon stage.

Citation:

Tilley, Derek; Spencer, James R.. 2020. Propagation protocol for production of Container (plug) Viola nephrophylla Greene Plants USDA NRCS - Aberdeen Plant Materials Center Aberdeen, Idaho. In: Native Plant Network. URL: https://NativePlantNetwork.org (accessed 2024/07/18). US Department of Agriculture, Forest Service, National Center for Reforestation, Nurseries, and Genetic Resources.