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February 2026
Monthly Meeting
NEXT HYBRID MEETING: Riley Black, When The Earth Was Green, February 21, Oasis, RB And Zoom
Riley Black is the bestselling and award-winning author of When the Earth Was Green , The Last Days of the Dinosaurs , and more. A regular contributor to National Geographic , Smithsonian , and Slate , as well as a repeat guest on NOVA and Science Friday , Riley has spent more than fifteen years bringing the public the latest about the deep past. When not enthusing over fossils in articles and books, Riley regularly volunteers with museum field teams to uncover new
Feb 1
Articles
TREES, PLEASE: Bristlecones Older Than Methuselah (So How Old Are Your Trees?)
By Robin Rivet. Have you ever pondered what it would be like to live for 1000 years? What about 4000, or even 5000 years? There are such...
Oct 1, 2017
TREES, PLEASE: Tree Pruning Standards
By Tim Clancy. The American National Standards Institute (ANSI) is the keeper of standards for all sorts of products and services. These...
Aug 31, 2017
TREES, PLEASE: Pomegranates—More Than Wonderful!
By Robin Rivet. Revered for their sweet-tart taste, healthful anti-oxidants, and characteristic crimson juice, the allure of a...
Jul 31, 2017
TREES, PLEASE: Wilt, Anyone?
By Tim Clancy. My first arboricultural encounter with lethal disease killing a tree from the inside was about 25 years ago. The tree, a...
Jul 1, 2017
TREES, PLEASE: Jacarandas: Lovely Lavender or Purple Panic?
By Robin Rivet. Final exams and Southern California’s rainy season are over, but in June the jacaranda tree (Jacaranda mimosifolia) is...
Jun 1, 2017
TREES, PLEASE: Queen Palms, Part II: Pests and Diseases
A mystery affliction causes queen palms’ otherwise healthy fronds to collapse. By Tim Clancy. In a recent article, we discussed the nutritional needs of queen palms ( Syagrus romanzoffianum ) and the importance of proper pruning and having a proactive fertilization plan to help keep the palms looking healthy and growing vigorously. Now we’ll focus on one of the reasons queen palms are so commonly planted, which is that they are relatively pest and disease free. Despite que
May 1, 2017
TREES, PLEASE: A Shady Business: Citizens Need to Speak Up
By Robin Rivet. Do you avoid parking under a tree because you’re concerned that bird or insect feces might ruin your car wash? Although...
Apr 1, 2017
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