Robin Y. Rivet

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

Download Coupon

View this month's Sales and Events

Articles

TREES, PLEASE! Are Your Trees Climate Ready?

By Robin Y. Rivet, for Let’s Talk Plants! February 2026. Are Your Trees Climate Ready? Valentine’s Day is looming, but February 2nd is Groundhog Day . Although we have ample sunshine for groundhogs to see their shadow, where are all the woodchucks? Duh. There aren’t any marmots in San Diego ( unless you count the one that hitch-hiked from NorCal in 2009 ). So how do “we” know that winter is done - if it never began? Across the state annual chill hours are declining and for S

Feb 1

TREES, PLEASE! Urban Tree Observations: Conks, Stains, Saps And Bugs

By Robin Y. Rivet, for Let’s Talk Plants! December 2025. Turkey Tails - Trametes versicolor - fruiting body on rotting tree log. Bernard Spragg – Flickr Pro: https://www.flickr.com/photos/volvob12b/41856600312 . Urban Tree Observations: Conks, Stains, Saps and Bugs In October, I wrote about abiotic tree mishaps – especially those inflicted on urban trees by well-meaning humans. Many were preventable, so please re-read that essay if you’re a DIYer, as many of those failures

Dec 1, 2025

TREES, PLEASE! Is That Tree Really Sick?

By Robin Y. Rivet, for Let's Talk Plants! October 2025. Jacaranda tree loses its foliage before blooming in May. Nearby trees have already leafed out. "SelecTree. UFEI. " Jacaranda mimosifolia Tree Record." 1995-2025. Cal Poly State University, San Luis Obispo. Is That Tree Really Sick? “I think my tree is dying”. Sadly, this is a common lament for far too many residents. Decline of urban trees often arises from largely preventable abiotic causes. Environmentally stressed tr

Sep 30, 2025