Roses are a strong favourite of gardeners thanks to their impressive growth and elegant blooms. Unfortunately, they're quite susceptible to diseases and stress, which is why you may have seen ...

Q: My 'Knock Out' roses bloomed like crazy, but some of the leaves don't look so good. They have smallish irregular holes clear through. Late last summer, one of the bushes had aphids, but I didn't ...

Q. Why would the leaves on just one branch of my shrub rose turn quite pale, almost yellow, but the veins are still bright green? –Janice Fabriant, Chicago A. A loss of rich green leaf color could ...

QUESTION: I’m curious about my knockout rose bushes dying. I’m sending pics of a new shoot and one I cut off several days ago. I realize it’s dried up, but can you can tell anything from it and the ...

Q: My Knock Out roses are blooming beautifully, but now something is starting to eat the leaves. What is it, and how do I stop it? A: They are difficult to see, but tiny whitish green worms with ...

Q: I planted these Knockout roses two years ago. They did fine for a while, but this year they have struggled. I treated them with a name-brand insecticide and fertilized and watered them as well, but ...