Picea engelmannii Archives - Michael Kauffmann

November 12, 2024November 17, 2024

Spruce Engraver Beetle in Northern California

In June 2023, my family and I took a trip up Russian Creek in the Russian Wilderness. This area is renowned for its conifer diversity so I was on the lookout for my favorite plants.

It was alarming to discover mortality in one of California’s rarest conifers, the Engelmann spruce due to Spruce Engraver Beetle in Northern California. Here is what I wrote:

It appears California’s Engelmann spruce are also under attack as the Blake’s Fork stand in the Russian Wilderness is witnessing ~60% mortality over the past few years from what I believe to be spruce beetles. More monitoring is needed.

July 2, 2023November 12, 2024

Engelmann Spruce and Subalpine Fir in California

Engelmann spruce and subalpine fir form one of the most common forest associations in the Rocky Mountains and parts of the Cascades. In California, this is one of our rarest subalpine forest vegetation alliances. These two species occur in only a few places in the state–often not even together unlike in the rest of their range. We recently visited the Russian Wilderness for a trail working trip and I became re-familiarized with these two wonderful tree species.