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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

Amorpha (fruticosa)

John Vandevender
Center Manager
USDA NRCS - Appalachian Plant Materials Center
P. O. Box 390
Alderson, West Virginia 24910
304-445-3005
John.vandevender@wv.usda.gov
http://plant-materials.nrcs.usda.gov/wvpmc

Family Scientific Name: Fabaceae / Leguminosae
Family Common Name: Pea
Scientific Name: Amorpha fruticosa L.
Common Name: false indigo bush
Species Code: AMFR
Ecotype: Central Appalachian
General Distribution: Found in all of the continental states with the exception of Nevada and Montana. Also found in the eastern Canadian provinces.
Known Invasiveness: None
Propagation Goal: plants
Propagation Method: seed
ProductType: Container (plug)
Stock Type: 1+0 container
Time To Grow: Years
Target Specifications: A second spring seedling ranging in height from 6" to 18" and having a compact, well developed root system.
Propagule Collection: Mature fruit was hand harvested from a population of Central Appalachian Amorpha fructosa maintained at the Appalachian Plant Materials Center.
Propagule Processing: Seed can be hand stripped from the plants from September to November or the entire seed head may be clipped. Seed heads were broken apart using a hammer mill. Seed was cleaned using a clipper fanning mill.
Pre-Planting Treatments: Mechanical scarification for 15 seconds using a Forsberg seed scarifier.
Growing Area Preparation/
Annual Practices for Perennial Crops:
Pro-mix BX with biofungicide was moistened and placed in heavy plastic trays. The soil was compacted somewhat to prepare a firm seedbed.
Establishment Phase: Seed was spread evenly by hand on the soil surface and then covered with 1/8 to 1/4 inch of additional soil. The top layer was pressed down slightly to ensure good seed to soil contact. The seed was then artificially cold stratified at 35-38 degrees Fahrenheit for 30 days. Upon completion of cold stratification, seed was moved to the greenhouse to stimulate germination.
Length of Establishment Phase: 1 month
Active Growth Phase: Once the seedlings had developed adequate root systems, they were transplanted into 1 gallon plastic pots filled with Metro-mix 510 growing medium. Transplants were maintained at a minimum of 65 degrees Fahrenheit in the greenhouse under automatic watering and natural lighting.
Length of Active Growth Phase: 6 - 9 months
Hardening Phase: Plants were moved into a shadehouse which provided a minimum of 50 percent shade to allow for hardening off before shipping.
Length of Hardening Phase: 2 weeks
Harvesting, Storage and Shipping: Plants with sufficient top growth were distributed to various NRCS field offices throughout the Appalachian Region for use in mine land reclamation.
Other Comments: False indigo bush is usually considered to be a pioneering species which invades disturbed sites, fencerows, roadsides, abandoned fields and forest and grassland borders.
References: USDA, NRCS. 2015. The PLANTS Database (http://plants.usda.gov, 11 March 2014). National Plant Data Team, Greensboro, NC 27401-4901 USA.

Citation:

Vandevender, John. 2015. Propagation protocol for production of Container (plug) Amorpha fruticosa L. plants 1+0 container; USDA NRCS - Appalachian Plant Materials Center Alderson, West Virginia. In: Native Plant Network. URL: https://NativePlantNetwork.org (accessed 2024/07/01). US Department of Agriculture, Forest Service, National Center for Reforestation, Nurseries, and Genetic Resources.