Roses are a beloved feature of many British gardens, but the fungal disease black spot, caused by Diplocarpon rosae, often leads to yellowing leaves and premature leaf drop. While chemical treatments and pruning are common, a natural solution has gained attention online.
TikTok user Sophie, known as @lookinsidemygarden, shared her method of underplanting roses with salvia to prevent black spot. She explained: "When the salvia warms up, they produce sulphur, which is a natural fungicide." Sophie reported that after underplanting all her roses with salvia last year, she did not have any black spots.
Underplanting involves growing smaller plants beneath larger ones, offering both protection and aesthetic benefits. Salvia, a member of the sage family, is resilient and easy to propagate from cuttings, ensuring a continuous supply. Cuttings can be overwintered in a greenhouse for year-round availability.
In response to a follower's question about which salvia species to use, the gardening community expressed enthusiasm for the tip. One user commented: "I may declare my everlasting love for this tip, or just say thank you." Another added: "I love roses, but whatever I try, two or three always have black spot. Probably have to wait for next year now, but thank you so much, in anticipation."
