Prairie Spire® Green Ash -- Fraxinus pennsylvanica ‘Rugby’
RFM-14
Dense, narrowly upright form
Description
Male seedless green ash cultivar with an above average growth rate of 1.84 feet annually over a ten-year period. Foliage is glossy and bright green. Characterized by a striking, narrowly erect, excurrent growth habit with terminal dominance and dense lateral branches, becoming narrowly pyramidal-elliptical with age. Hardy in USDA Zone 2b. It will reach a semi-mature height of 35 to 40 feet in 25 to 30 years. This tailored, dense excurrent green ash is a preferred cultivar in the commercial nursery trade of the north-central U.S. and prairie provinces in Canada.
Potential Uses or Applications
Nursery stock, shade, shelter, boulevard, park, and specimen tree
Development Stage
Plant material can be obtained from NDSU Plant Sciences Department or designated nursery subject to availability.
Elegant Shade Tree
Patent Status
U.S. Trademark registered – Prairie Spire®
Canadian Trademark registration pending
Licensing Status
This cultivar is available for non-exclusive licensing.