Brown Spots on Leaves Killing Rose Plants
I bought some pots of roses over a period of about 4 weeks. One day I
noticed some brown spots on the leaves of one of the plants and very quickly
all the plants had brown spots. They then started shedding leaves.
Subsequently I bought a container of 'insecticide' where the label stated
that it was for brown spots in roses. However, after spraying, most of the
leaves fell off and the new leaves became knurled and very small.
I have now cut off all the branches wherever there are leaves or shoots
(leaving only the stumps) hoping that this will stop the 'epidemic'.
I am indeed very unfamiliar with caring for roses and will appreciate your
advice as to what I need to do next. Thank you.