Abstract
The winter hardiness and growth potential of 10 cultivars of deciduous shrubs were evaluated to determine their adaptability to climatic conditions. Plants were grown at eight sites in Quebec and at one site in northeastern Ontario (zones 2, 4 and 5). Cornus alba 'Argenteo-Marginata' and 'Sibirica', Lonicera korolkowii var. Zabelli, Lonicera korolkowii var. morrowii, Lonicera × xylosteoides 'Clavey's Dwarf', Physocarpus opulifolius, Physocarpus opulifolius 'Aureus' and 'Nanus', Salix purpurea 'Nana' and Salix elaeagnos were used. Cornus alba 'Sibirica' and L. × xylosteoides 'Clavey's Dwarf' were not affected by winter conditions at any of the sites, whereas L. korolkowii var. Zabelli and L. morrowii were severely affected, particularly in zone 2. Our results indicated that S. purpurea 'Nana' was more frost resistant than S. elaeagnos. The two cultivars of Physocarpus were slightly less winter hardy than the species. None of the 10 species could be grown commercially in zone 2a. Growth of S. purpurea 'Nana', S. elaeagnos and P. opulifolius 'Aureus' was limited in zones 4b and 5. The hardiness zones of the 10 species were made more precise, established or modified. Key words: Hardiness, growth potential, winter damage, shrubs, hedges
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.