||Since 1989, an interagency agreement between the National Park Service and the Natural Resources Conservation Service has led to an exchange of technical information and the development of park indigenous plant materials, new seed/plant propagation technologies, and revegetation methodologies for revegetation of highway and other construction projects. The program provides assistance to national parks through NRCS Plant Materials Centers(PMC) to identify plant species needed; collect and process native seed; provide high-quality,
custom-grown container plants and field production of native forb and grass seed from site specific collections; ensure genetic integrity; and provide technical assistance on site preparation, plant establishment, weed control, seed collection, and processing.
In the past 12 years, the program has assisted 45 national parks with nearly 100 projects in cooperation with 12 Plant Materials Centers (PMC); tested more than 1,000 native species/ecotypes and developed successful propagation techniques for more than 700 species and
produced approximately 29,000 PLS pounds of grass/forb seed and 720,000 tree/shrub seedlings. In addition, computer tools such as guides to assist in development of seeding rate/mixtures and revegetation cost estimation have been developed. A manual that summarizes the propagation technology for more than 200 native species was published. These propagation protocols developed from research by the Park Service and PMCs have been placed on an
interagency Web site (http://nativeplantnetwork.org) for access by nurseries, seed producers, and the general public.