Save rhododendrons from phytophthora root rot by mulching, pruning: Ask OSU Extension . Updated: Dec. 24, ... Last year, I lost a mature rhododendron in the front yard, one of five.

DEAR LOIS: It appears your rhododendron is afflicted with phytophthora root rot, caused by an oomycete, which is an organism similar to a fungus. The oomycete thrives in wet conditions and ...

My Rhododendron has some branches that look dead. ... Hybrid Rhododendrons can be infected by a fungus called Phytophthora. Even though the rest of the shrub looks healthy, ...

From then on, all you have to do is worry about the many bugs and diseases that can attack your azaleas and rhododendrons, such as lace bugs, borers, thrips, phytophthora root rot, phomopsis ...

Known for their colorful spring flowers and cold heartiness, rhododendrons are a pretty popular plant in Pennsylvania. Unfortunately, they’re also the subject of a new warning from the Pennsy… ...

Over the next month, multiple rounds of testing confirmed that the plant was infected with the pathogen Phytophthora ramorum. In rhododendrons, camellias, and many other plants, the effects are ...

For the past four years, Mark Brand has been inserting genes derived from an African frog into rhododendrons, trying to create a plant with extra resistance to the root rot caused by Phytophthora ...

While the fungus does not kill rhododendron plants, it can be spread to other plants. “Our main concern is that the plants act as carriers of Phytophthora ramorum and could spread spores to ...

The Department of Agriculture issued an alert Monday advising residents that rhododendrons received by retailers in 28 states may have been exposed to a plant pathogen called Phytophthora ramorum.

Known for their colorful spring flowers and heartiness in cold conditions, rhododendrons are a pretty popular plant in Pennsylvania. Unfortunately, they’re also the subject of a new warning from ...