I have Rosa Albertine (15 yrs old) growing on a metal fence for last 2 yrs and it is not thriving. It was previously on a wooden fence which had to be replaced. The rose was not moved and is fed and given a good mulch of well rotted manure every year. Does it dislike it’s metal support which is painted with Hammerite paint?
1 Answers
Hammerite should not cause problems. It is more likely that damp summers have brought an increase in rose blackspot disease which ‘Albertine’ suffers from. A lot of feeding might make this worse.
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