Common diseases that affect roses in the UK are Black Spot (Diplocarpon rosae), Powdery Mildew, and Rust (Phragmidium tuberculatum).
A regular spray with a rose tonic such as Potassium Phosphite (Uncle Tom’s Rose Tonic) will help roses to keep healthy. Control of blackspot and powdery mildew can also be achieved using suphur based products that are also available in our SHOP. Use alongside a proprietary feed during the growing season to keep your roses happy.
Don’t forget – whether you garden organically or not – roses need food and water and a good mulch of well-rotted manure in the spring.