Tag Archives: Quercus garryana

Follow Up

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In January (see “White Oak Survival” on 01-29-2018) I posted photographs of Oregon white oaks (Quercus garryana) in the Modoc National Forest that were damaged by the Cove Fire, which burned almost 40,000 acres near Adin CA (Modoc County) last … Continue reading

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White Oak Survival

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Which of these Oregon white oaks (Quercus garryana) from the Cove Fire site do you think will survive? The Cove Fire consumed nearly 31,000 acres of the Modoc National Forest in July and August of 2017. Approximately six months after … Continue reading

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Fall Colors

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During a recent visit to Burney Falls State Park (Shasta County CA) the oaks in their fall colors appeared particularly brilliant this year. There are two native deciduous oaks in our area – the California black oak (Quercus kelloggii) and … Continue reading

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Tannins in Acorns

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It is interesting how one thing can lead to another. While reading about acorns in conjunction with my previous post (“Selective Food Storage” 11-28-16), I learned additional  new facts about acorns. Tannins are plant polyphenols that bind and precipitate proteins … Continue reading

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Oak Club Gall

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Oak club galls form on several oak species when oak club wasps (Andricus coortus) lay their eggs at the tip of new stems in the spring. The oak club is a cynipid wasp. Adult club gall wasps emerge the following … Continue reading

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Sunburst Gall Wasp

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Another cynipid wasp that induces a fascinating gall on blue oaks and Oregon white oaks (Quercus garryana) is the sunburst gall wasp (Andricus stellaris). As with the ball-tipped gall wasp, another cynipid wasp featured in my last post (see “Ball-tipped … Continue reading

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Ball-tipped Gall Wasp

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Most wildflowers have long faded and due to the continuing drought in our area (Northern California) fungi are scarce while the birds are unpredictable and scattered. Thus while wandering about I find myself focusing on usually overlooked subjects. Oaks support … Continue reading

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