Rose disease

Some of my rose bushes have discolored (brown or yellow) leaves. Does this mean I should spray for disease? I have been spraying monthly for blackspot. Thanks for any input.

I'm no expert, by far, but it looks like you might have some black spot. Remove the discolored leaves and get rid of them. Wash your tools after and don't use them for pruning other things until you do. Also, don't do any overhead watering. Roses don't like wet leaves.

black spot ans maybe spider mites. black spot in ga and sc is very common on roses. try insecticial soap on them and take the bad leaves off. throw in plastic bag and in trash.

Black spot. Make sure you have mulched around the plant. The spores drop to the ground and when it rains or you water the spores are splashed back to the plant. Mulching helps reduce the splash back.

Roses are more likely to suffer more from diseases when they are not getting enough care, things like water, feeding, proper pruning etc, most roses suffer from this black spot at some time or other, but when the plants are really healthy, they can tolerate a bit of disease or aphids without too much trouble, you have been told right to search for ALL the fallen leaves as this disease can over winter in the soil and the cycle just gets going again, also make sure there is a good air flow around any climbing roses to prevent grey mold forming, there are several products on the market for black spot, they dont kill it off, but IF you start the spraying early spring before the new foliage really gets growing, and every three weeks there after, you will eventually elimainate it, I my friend always sprays around the soil at the base also and it does help it done often and early enough, it really wont kill off your rose and is more unsightly than anything else, unless ALL the leaves fall off at the one time. Hope this helps. WeeNel.

I'm so glad you brought up spraying the ground. I forgot about it but it's a great point. BY doing that you can kill off a lot of spores that have fallen to the ground. Most roses are very resislient and can take a lot of abuse, i always say a little buit of work on them frequently.

Thank you to everyone who offered such good advice!

A couple of roses in our garden are having this type of discoloured foliage, and I tried removing the affected leaves until I realized there would be almost no plant left! Any suggestions?

can you get a picture to us.

If you examine your rose branches/stems Roemary, you may notice small buds on them, this is normally new leaves which grow before the flower buds start, so dont worry too much about a lot of leaf loss, the black spot will make the rose drop its leaves anyway, but if you were to start spraying for this disease, then there is every chance the new leaves will be saved from this, the other thing you could try is to give an early prune, this will remove a lot of stem /leaves infected and you can start the spraying then. I think Kitten has it right though, a picture could help better. good luck. WeeNel.