An expert rosarian offers advice on how to block or minimize powdery mildew, black spot, rust and more in San Diego gardens.

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 ...

My rose bush has leaves with pale spots and some holes. What’s causing that, and what can I do about it? Usually, the primary ...

As with all plants, roses can succumb to many diseases and pests. Unfortunately, there are common diseases that target these hugely popular flowering shrubs, which can cause the plants to suffer and ...

Spot trouble early: Recognizing symptoms like leaf spots, discoloration, or wilting can help you act quickly to prevent rose diseases from spreading. Fight pests wisely: Aphids, spider mites, and rose ...

It can be scary when your plants are sickly. Some diseases can be managed while others are detrimental, so it's important to ...

Find out how a gardener used a £1.20 full fat milk hack to save his rose plants from black spot - one of the 'most serious' diseases ...

Autumn presents a gorgeous opportunity to enjoy the garden thanks to the vibrant foliage, but gardeners should watch out for black spot disease which can prevent roses from ever blooming again. As ...

Roses need a lot of care in spring to ensure they grow properly and stay healthy. Gardeners also need to pay attention to their leaves in the upcoming weeks, to look out for any disease or pests in ...

Getting your Trinity Audio player ready... May and June are glorious times in the garden; if you’re a rose lover, it’s when most roses are at their peak of bloom. Nothing quite like a bush with ...

Q: I have noticed rose shrubs in mine and many gardens have holes or pale grayish patches on the leaves, but I don’t see any bugs on them. Is this an infection or something I’m just not finding? A: ...