Sounds like mildew. Spray with a fungicide that should cure it unless its too far gone. If you think it is not recovering after a couple of weeks cut it back to the lowest bud,remove any foliage left,spray again and keep your fingers crossed.
Perhaps it is powdery mildew? ** This can be pollen from other plants around like trees, even grass.
the leaves make photosynthesis
Photosynthesis
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Black walnut leaves, rose bush leaves, and the Ohio Buckeye tree's leaves
There are holes in the leaves of your rose bush because caterpillars come and eat the leaves and the hole is the place of the leave that the caterpillar ate at.
yes, but the damage they do to the leaves is miner and the good they do by pollinating your garden is imense
Rose bushes have compound leaves. They can also, apparently, have the occassional pinnate leaf. See Sources and Related links, below.
a pretty one
The Rose Bush of Memories was created in 1914.
a rose bush is classificated into domain and kingdom
Yes, rabbits in the wild will readily eat roses, both the flowers and leaves of the plant. In fact rose buds are particularly sweet and succulent, and even humans occasionally enjoy them. However, the leaves are somewhat more fibrous than many other plants and are most likely harder for a rabbit to digest. Since there are several more easily digested and nutritious plants and vegetables readily available, rose leaves are lower on the list of items one would regularly feed to a pet rabbit. If yours happens to like them, there's no reason why the occasional sprig of fresh leaves wouldn't be a welcome addition to their diet.
Rose leaves are green