Gardening expert Michael Griffiths has shared that August is the ideal time to prune rambling roses, a task that encourages bigger blooms next year. This simple yet vital task should be done now to reap the benefits in the coming season.
Why August is Key for Rambling Roses
Rambling roses typically bloom from June through August, making this the perfect time to get ahead on plant care. While new plants can survive a few years without pruning, established ramblers need an annual prune, and August is the best time to do it.
To start, remove any dead, diseased, or dying branches, as well as spent flowers. These are usually black or brown in colour and should be cut off at the base of the plant. Weak branches should also be removed.
How to Prune for Optimal Growth
After removing the unhealthy parts, tie any remaining stems or shoots together for support, attaching them to the plant's support structure to prevent breaking. Then, target side shoots by cutting them back to two thirds of their length on a 45 degree angle, just above healthy buds.
If the plant looks overgrown, remove excess branches at the base to prevent water collection and rot. This helps divert energy from old growth to new buds and healthy branches.
Expert Advice and Best Practices
Gardeners' World emphasises the importance of annual pruning for established rambling roses, as it helps the plant carry next year's roses. The Royal Horticultural Society (RHS) recommends pruning rambling roses "routinely" in late summer, after flowers and hips have shown.
For renovation, the RHS notes it is easier to see what you are doing when the rose is not in leaf, plus there is a better response from the rose, which should grow back vigorously the following spring. After pruning, tie the roses back to their support, whether a pergola or trellis.
