*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 ...

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 ...

No matter what type of hydrangea you are growing, there is a long list of diseases that could potentially threaten them. Whether it be fungal or bacterial problems, all parts of the hydrangea can be ...

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 ...

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 ...

I recently added a hydrangea to my yard, as these popular cottage garden plants never fail to wow with their showy, spherical and cone-shaped florals. Something I'm keen to avoid, however, are the ...

My beautiful oakleaf hydrangeas, those stately stalwarts that form the backdrop for many of my flower beds, look like they have a bad case of chicken pox, only the spots aren’t red. Instead, the spots ...

A: Those spots are due to Cercospora leaf spot, a fungus. Since the hydrangea will lose its leaves soon anyways, don’t worry too much now. Once they fall, rake all the leaves out from under the plant ...

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 ...