47+ Rose Leaves Turning Red. Learn more in this article. When green leaves start to turn red, however, it's likely a sign of a bigger problem that could be harmful or deadly to the plant.
You know you've got it when your roses start to throw off strange growth that is purplish in color and most noticeably has foliage in the shape of what is called witches broom (see photos).
When rose leaves turn yellow and drop off, your plants are sending out a cry for help. Rose leaves often begin their life with a red tint, become green as the year progresses, and may then turn red again as fall approaches. If the leaves are just turning yellow and falling off without having a brown tip may mean that you are overwatering the plant. This disease, which is caused by a virus, affects each species of.