All my roses have yellow leaves with black spots..
Why have all my roses including climbers got yellow leaves with black spots? This has not happened so badly before.
This is the aptly named Black Spot. This is a fungus/viral infection and fairly easily cleared up using Roseclear from your garden centre. It's a bit late in the season but spray onto the growing tips and green growth. Since Black Spot is carried in the soil you can also treat it with a solution of Jeyes Fluid directly onto the ground. The good news is more you treat it the weaker the condition becomes.
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