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Protocol Information

John M. Englert
Natural Resources Conservation Service - Norman A. Berg National Plant Materials Center
Bldg. 509, BARC - East, E. Beaver Dam Road
Beltsville, Maryland 20705
(301) 504-8175
(301) 504-8741

Family Scientific Name: Rosaceae
Family Common Name: Rose Family
Scientific Name: Physocarpus opulifolius
Common Name: Common ninebark
Species Code: PHYOPU
Ecotype: Shenandoah National Park, Virginia
General Distribution: Quebec to Minnesota, South Dakota, Colorado, south to North Carolina, Tennessee, and Arkansas. Found in moist, sandy or rocky soil; along streambanks, rivers and shores.
Propagation Goal: Plants
Propagation Method: Vegetative
Product Type: Container (plug)
Stock Type: 1 liter containers
Time To Grow: 18 Months
Target Specifications: Stock Type: Quart size containers.
Height: 12 inches.
Caliper: N/A.
Root System: Extensive fibrous root system; firm when pulled from containers.
Growing Area Preparation/
Annual Practices for Perennial Crops:

Container Type and Volume: Cuttings are started in large 14” w x 22” l x 4” d flats; once rooted, they are transferred to quart containers.
Growing Media: Cuttings are stuck in straight perlite. Transplants are grown in woody mix (3.8 cu ft. bale Sunshine #1, 4 cu. ft. of pine bark mulch, 20 oz. Nutricote and approximately 20 oz. endo-mycorrhizae).
Hardening Phase: Hardening Phase: Once cuttings are transferred to quarts in late summer, they are moved outside to a shade house for acclimation.
Harvesting, Storage and Shipping: Total Time to Harvest: It takes about 1½ years to get a quart container ready for the field.
Storage Conditions: Container plants are stored in a cold house @ 40º F for the winter; containers are periodically watered to prevent dehydration.
Outplanting performance on typical sites: Outplanting Site: Shenandoah National Park, Virginia; National Plant Materials Center, Maryland.
Outplanting Date: Spring.
Other Comments: Vegetation Propagation Method: Softwood cuttings are taken in early to mid July, either at the Parks or from stock plants established at the NPMC. Cuttings are trimmed to approximately 6 inches with one pair of leaves at the top, dipped in Hormodin 2, and stuck in flats of perlite under mist in the greenhouse. Cuttings root in a few weeks and are then transplanted to quart containers with a mix of Sunshine Mix #1, fine pine bark chips, Nutricote, and endomycorrhizae.
Propagator: J. Englert, J. Kujawski, K. Davis.
References: Brown and Brown. 1992. Woody Plants of Maryland,. Port City Press, Inc.

Gleason, H and A. Cronquist. 1991. Manual of Vascular Plants of Northeastern United States and Adjacent Canada. 2nd edition. New York Bot. Garden.

Kujawski, J. 1997. Annual Report to the National Park Service for Shenandoah National Park. USDA NRCS National Plant Materials Center. Beltsville, MD.

Davis, Kathy M.; Kujawski, Jennifer L. 2002. Propagation protocol for vegetative production of container Physocarpus opulifolius plants (1 liter containers); Natural Resources Conservation Service - Norman A. Berg National Plant Materials Center, Beltsville, Maryland. In: Native Plant Network. URL: http://www.nativeplantnetwork.org (accessed 31 August 2015). Moscow (ID): University of Idaho, College of Natural Resources, Forest Research Nursery.