Roses will bloom for longer and fight black spot when sprayed with milk
With autumn just around the corner, there are plenty of gardening jobs to complete, including pruning. When it comes to roses, gardeners should keep a close eye out for signs of black spot. The common fungal disease can leave plants with unsightly dark patches, yellowing leaves and premature leaf drop.
TL;DR
- Black spot is the most serious fungal disease affecting roses, leading to yellowing leaves and premature leaf drop.
- Diluted milk can be used as a natural remedy, as its proteins and enzymes have antifungal properties.
- Milk works best in sunlight, creating an inhospitable environment for fungus and preventing spores from sticking.
- Other recommended natural controls include baking soda and using collected milk cartons filled with water.
- The Royal Horticultural Society (RHS) advises collecting fallen leaves and pruning stem lesions.
- Good garden hygiene, such as removing diseased material and fallen leaves, is the primary defense against black spot.
- Preventing black spot helps roses stay healthier, maintain foliage, and continue flowering into early autumn.