Posted: 23/05/2016 at 20:10
Peter, I planted one last year for a client. This spring growth was a bit whippy. I've since pruned it hard, and I mean hard, right back to a few inches and mounded soil over the union. Since then it's produced some lovely strong new stems, strong thick, and to be honest quite gorgeous to behold. I'd prune it hard and wait. A good feed, water and mulch will all help as well. I'm in the process of renovating all her roses and hard pruning to encourage the new stems is fail safe IMHO. Roses need tough love.