climbing rose
I planted a Paul's Scarlet climber up a narrow arch a few years ago. It has grown well but I would like to prune it so I have flowers lower down. It has only one thick stem reaching up about 5ft where it then becomes a Y shape. Can I prune it lower than the Y? I don't mind losing flowers for a year if I can get a better shape eventually.
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Then what you want to do is train new shoots as horizontally as possible - which on a trellis or arch may mean zigzagging up the vertical sides until you get to the curve of the arch. According to the DA website Paul’s scarlet has plentiful pliable stems - so that shouldn’t be a problem.
Keeping them between horizontal and 45 degrees will mean more growth of buds lower down the stems and therefore more flowers.