My daughter is getting married next weekend and I've spent all summer trying to nurture my roses! The foliage went spotty a while ago so I treated them, fed them, really pruned them and held my breath. Last week lots of gorgeous new leaves started growing and I now have buds galor, joy! But.... suddenly the new reddish leaves are turning pale and a bit floppy.
Roses New Foliage Suddenly Going Pale
It looks like perhaps a spray of some kind drifted onto the roses foliage. The problem being high on the bushes and moving down is what makes me think this. If it were something poured onto the soils the problem would likely be moving upward although it can start at the new and faster growth too when something is going on in the root zone. I will provide a link to an article that may be of some help to you, I would water them well with some water that has a product called Super Thrive in the water. It is not a fertilizer but is jam packed with nutrients to help the roses deal with stresses. Article Link: >> https://www.gardeningknowhow.com/ornamental/flowers/roses/yellow-rose-leaves.htm AND