Hardiness zones for roses
Canadian Zone Map
States Zone Map
Many of our rose friends have
asked us to indicate the hardiness zone for the varieties we list on our
website. We have not applied zones because we believe it is not of value for the
majority of rose varieties. To our way of thinking the hardiness zone should
identify the coldest zone the plant can survive in without suffering significant
winterkill to itís branches, which excludes from zone 5 and colder all Hybrid
Teas, Floribundas and many other varieties. Unfortunately most roses require
care and protection to achieve their full potential in colder areas and
restricting oneself to varieties that are identified as being winter-hardy in
zone 5 and colder excludes many varieties that have been grown successfully here
for many years.
As such we offer these
protection for roses in zone 6 and colder
Types that need no protection
- we consider these to be reliably winter-hardy in zones 6, 5, and 4 under
Polyanthas, Explorer Climbers, Ramblers, most Shrub Roses,
Rugosas, Albas, Cerntifolias, Damasks, Gallicas, Hybrid Foetida & Moyessi,
Hybrid Musks, Hybrid Spinossimas, Mosses, and most species varieties.
ALL other varieties should be protected for winter.
*There are undoubtedly specific varieties within the less
winter hardy categories (Hybrid Teas etc.) that can be grown without winter
protection but, individual experiences notwithstanding one is best to provide
protection when in doubt.
Protecting roses for winter doesnít need to be complicated,
or involve purchasing special materials. Simply hill the plants up with a mound
of soil about 10Ē deep over top of the union. You can use rose collars or cones
to keep the soil from washing away. This provides ample protection for the
winter. Remove the remaining mound in early spring, when buds are swelling on
deciduous trees and shrubs.
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