Pruning Roses - Knowledgebase Question

Dubuque, IA
Question by rtrapp4
September 13, 2005
I have Knock Out Rose Shrubs and according to your care instructions it states to prune annually in late winter. What do you consider late winter in Zone 4?


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Answer from NGA
September 13, 2005

0

This would be late winter to very early spring, before the buds begin to swell and well before they begin to grow for the season. It is related more closely to your snow cover and frost dates than your zone, but I would guess it would be some time in March for you. I usually do mine once the most bitter weather is over and spring seems to be coming, on one of those first days when the temperatures are over 40. I hope this helps.

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