Porodaedalea in North America

Red ring rot is a hugely important stem-decay disease, certainly the most important one on conifers in the northern hemisphere. In preparing the page on red ring rot, I found that investigating the current knowledge and ideas of the pathogens involved was complex. Here are the details, including my conclusions (opinions) based on the literature. … Read more

I Have Incense Cedar Rust!

Having moved to Vancouver, Washington two years ago, I’m running into some new and interesting things. Like this Pacific tree frog that amazed us about 5 feet up on one of our tomato plants. I’m surprised it survived the weeks of toxic smoke from forest fires that we had earlier in the fall. But also … Read more

Hosts of Porodaedalea pini

The last few weeks have been a real eye-opener with respect to Porodaedalea pini. In my four years in the Colorado area, I had only seen the stem decay fungus on Engelmann spruce (Picea engelmannii). However in the last two weeks I have seen it on lodgepole pine, subalpine fir, and Douglas-fir. The new finds … Read more