Questioni have a small rose bush in a large container. although i ry not to wet leaves some are yellow with black spots on them. please help thank you dee
Answerget to a local garden center/nursery and quiz them on black-spot disease on roses. buy some orthenex (a systemic combination insecticide/fungicide)or similar recommended product. spray about every 2 weeks as per labeled directions for roses. remove all yellow leaves w/black spots(even those on the soil) and put them in the trach.