Roses are one of the most popular landscape plants, but many homeowners are unfamiliar with the most common rose problems. Rose slug, blackspot, rose rosette and powdery mildew can all have either ...

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: My bushes are diseased! The leaves have tiny orange “spots” and are turning brown/dry. I’ve had them for 10 years or more and they gave lovely flowers 2, 3 times a season. There are some buds but ...

Question for Dan Gill: Last year I noticed the yellowing and brown spotting of some of the leaves on my Knock Out roses. The same thing is happening this year. Can you diagnose and suggest what to use ...