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what is the reason and what to do for yellowing and drying out canes of roses. Especially climbers.

Hello, rose1. Some of these problems are fungal in nature. They occur when the cane has an injury and fungi infects the plant. This injury can occur after pruning, due to pruning with infected pruners, due to canes rubbing against each others, etc. In these cases, one solution is to remove the infected part of the cane using clean pruners.

I assume that your plant is basically healthy, that you keep the soil moist -never wet-, that there are no minerals defficiencies & pH problems in the soil and that there are no sign of pests like cane borers etc. Is there a chance that you can post a link to a picture(s)?

Thanks Luis,

When you say infected cleaner, you mean it old? rusted?... or we are suppose to wash cleaner every time. Plant is healthy bears many flowers but has is not very leafy. The other same climber (Blaze) is leafy, no yellowing of canes.

I disinfect the pruners using a 9 part water and 1 part bleach mix if one of the roses has an issue that could be caused by a virus or fungi.