USDA-ARS NC-7 Regional Woody Ornamental Trials
Paul Ovrom and Mark Widrlechner
Since 1954, the NC-7 Regional Woody Ornamental Trials have addressed landscape horticulture needs of the North Central Region and parts of the country with similarly challenging growing conditions by conducting long-term evaluations of new and promising trees, shrubs and vines. Currently, trial plants are evaluated at over 30 sites in 16 states. Besides collecting and disseminating evaluation data, another goal of the trials is to increase the range of useful plants in the region's nursery trade. Trial site cooperators in the NC-7 Trials coordinate to varying degrees with their local nursery industry to introduce promising accessions.
The NC-7 Trials are one of the longest running evaluation networks for landscape plants in the U.S. Many sites have been participating since the 1950s and now have extensive collections of interesting plants. These plants are available for public observation and teaching, and are often featured in field days for local nursery and landscape workers. Each
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