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henry_kuska

An 1997 Evaluation Report of Shrub Roses

henry_kuska
13 years ago

"Summary

So, which shrub roses are best suited for Midwestern gardens? When considering winter hardiness alone, just about every rose in this evaluation project is suitable. Winter losses were insignificant since only nine plants out of 153 were killed over six years. The English roses proved to be hardy beyond our expectations. All of the English roses died to the ground during the coldest weather of 1994, but half of the hardy shrub roses from Canada also died to the ground that winter.

Winter hardiness alone does not make the best shrub rose. Flowers, habit and disease and insect resistance must also be taken into account. The charming allure of the English

roses was undeniable, but the often severe susceptibility to black spot lessened the ornamental quality and health of these plants.

The winter hardy roses from Canada not only had attractive blossoms but in more cases exhibited greater resistance to black spot.

In the end, there are only a few shrub roses from this evaluation project that can be wholly recommended for Midwestern gardens. The very best of the evaluation group

included three English roses: âÂÂConstance SpryâÂÂ, âÂÂLucettaâ and âÂÂThe ReeveâÂÂ; as well as seven Canadian roses: âÂÂAssiniboineâÂÂ, âÂÂChamplainâÂÂ, âÂÂHenry KelseyâÂÂ, âÂÂJens MunkâÂÂ, âÂÂJohn Davisâ and âÂÂWilliam BaffinâÂÂ. Rosa rugosa âÂÂAlbo-Plenaâ also did well. A good number of plants that received fair ratings might give better performances with regular pruning to improve habits and with annual fertilizer and fungicide applications to increase flower production and plant health.

Here is a link that might be useful: link for above

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