Spring has sprung and gardeners are digging in. Got questions as you carry on? Get answers from Ask an Expert, an online question-and-answer tool from Oregon State University’s Extension Service. OSU ...

Q: While deadheading our rose bushes I found what appears to be rust. What causes this and is there anything I can do to prevent it? - Cliff Bjornstad, Fargo A: Rust is a fungus disease and by your ...

Q: Last year, my roses had a case of rust and some insect issues, so I treated them with Neem Oil. Afterward, all of my rosebushes lost all of their leaves and they didn’t come back until later in the ...

Roses do not have thorns; they have prickles. But there ARE “thorns” in the rose garden. Their names are botrytis, black spot, rust, downy mildew, anthracnose and cerospora leaf spot. They are all ...

Numerous gardeners are basking in the warmth, but they must remain vigilant as the humid climate poses a threat, particularly to roses, making them more susceptible to diseases such as rust. Rust is a ...

Remember when you would walk into the classroom and your teacher would announce a pop quiz? Sometimes this felt like punishment, but the quizzes were often a great learning tool. Now’s your chance to ...

Roses are grown right across the UK and often do well in the warm summer months. Though these bold flowers are relatively easy to grow, they can be hard to maintain when it comes to warding off pests, ...