*Refers to the latest 2 years of stltoday.com stories. Cancel anytime. Leaf spot - Hydrangea quercifolia Q • What are the black spots appearing on my hydrangea leaves? The black spots on your ...

Holes in hydrangea leaves are usually caused by pests like beetles, caterpillars, slugs, or aphids—use a hand lens to ID the culprit. Deer or rabbits leave torn leaves, while fungal diseases or heat ...

In late summer or fall, Cercospora fungus causes brown spots on hydrangea leaves. The plant looks unsightly but usually recovers from the disease. Drip irrigation, good air circulation, and removal of ...

Hydrangeas are one of the most popular flowering shrubs. Their blooms are gorgeous, and they’re a low-maintenance plant once established. However, few things ruin the look of a hydrangea shrub faster ...

This is about the time of year Cercospora leaf spot is obvious on hydrangea leaves. This fungal disease is brought about by humid weather but is also more likely to affect plants that are watered ...

There are brown spots with purple edges on the leaves of my hydrangeas. They are still producing some small flowers and new growth. But new growth becomes spotted as it appears. Is there anything I ...

With the weather so nice, I’ve been inspecting my yard, deciding which chores to tackle first. I was horrified to find my very old hydrangeas a mass of spindly sticks with a few spotted and yellowed ...

Fall may be in the air, but gardening season is still happening, and you may have questions. For answers, turn to Ask an Expert, an online question-and-answer tool from Oregon State University’s ...