United States 
Roses have yellow leaves with black spots. Whats my problem?
Asked from the GoYpedia
roses page
3 Jul, 2011
United States
Roses have yellow leaves with black spots. Whats my problem?
Asked from the GoYpedia
roses page
3 Jul, 2011
Could be 'Blackspot'. You can spray the plant, and pick up the fallen leaves and destroy them - don't compost them. It won't get rid of it this year, but next year, start spraying early in the growing season.
3 Jul, 2011