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

A few well-timed May jobs can transform your roses – encouraging repeat flowering, stronger growth, and healthier plants ...

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 ...

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 ...

Just as your roses reach their peak, a common fungal foe may be lurking, ready to sabotage their vibrant display. Black spot, easily identified by the dark brown or black blotches that appear on ...

Why May matters: Roses direct energy into stems and foliage this month, making timely care essential for strong growth and plentiful blooms. Six essential steps: Tasks include refreshing mulch, ...

CORVALLIS – Mild winter weather will most likely coax roses into bloom early, which means dealing with the usual diseases and pests earlier, too. When it comes to one of the country’s most popular ...

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' ...

You should remove any dead, diseased or damaged rose growth any time of year, and aim to give your roses a proper pruning in early spring to promote healthy growth. A good reminder is to prune when ...