Q: My Nikko Blue hydrangeas have blooms that are partially to fully brown from some sort of disease. The leaves are fine; only the blooms are affected, and soil pH is perfect. I have reached out to ...

Previous studies have demonstrated the efficacy of calcium (Ca) spray applications derived from Ca chloride for reducing botrytis (Botrytis cinerea) infection severity on petunia (Petunia ×hybrida) ...

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 ...

Given that the current weather forecast has cooler-than-normal temperatures and that most gardeners have planted flowers in the landscape, we may see botrytis cropping up in the next few days.

Plant diseases occur in most gardens. Many happen on a yearly basis, others sporadically. Why disease occurs often is dependent on weather. In fact, there are three conditions that must exist for a ...