UCCE Master Gardener Program
of Humboldt and Del Norte Counties
Humboldt County Office
5630 South Broadway
Eureka, CA 95503
Phone (707)445-7351
Del Norte County Office
586 G Street
Crescent City, CA 95531
Phone (707)464-4711
Advice to Grow By
Coastal Gardener Newsletter
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Past newsletters available to view:
Pests in the Urban Landscape
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![Jumping spider eating a fly. [Credit: Jack Kelly Clark]](https://ucanr.edu/blogs/UCIPMurbanpests/blogfiles/94297_square.jpg "Jumping spider eating a fly. [Credit: Jack Kelly Clark]")
Webinars: Spiders, Pesticides and Water!
Are you concerned about pesticides in our waterways? Join us on August 18, 2022 at noon for UC IPM's free monthly webinar to learn how to keep surface water clean by reducing pesticide use and runoff. The webinar will be presented by Karey...
By Karey Windbiel-Rojas
Author - Associate Director for Urban & Community IPM/ Area Urban IPM Advisor -
![Thinning canopy is an early sign of Bot canker. [Credit: J. Downer]](https://ucanr.edu/blogs/UCIPMurbanpests/blogfiles/93035_square.jpg "Thinning canopy is an early sign of Bot canker. [Credit: J. Downer]")
Bot Canker: Have You Heard of It?
Ever heard of Bot canker? "Bot" stands for Botryosphaeria which is a plant disease that results in cankers of trees and other woody plants. This fungal disease can be worse under drought conditions when trees are stressed. Early symptoms like...
By Karey Windbiel-Rojas
Author - Associate Director for Urban & Community IPM/ Area Urban IPM Advisor -
![Leaves of a river red gum eucalyptus tree covered with redgum lerp psyllids. The white growths are the “lerp” produced by the immature (nymph) stage of the insect. [Credit: Jack Kelly Clark]](https://ucanr.edu/blogs/UCIPMurbanpests/blogfiles/92910_square.jpg "Leaves of a river red gum eucalyptus tree covered with redgum lerp psyllids. The white growths are the “lerp” produced by the immature (nymph) stage of the insect. [Credit: Jack Kelly Clark]")
Redgum Lerp Psyllid Resource Updated
If you have eucalyptus trees, you might have noticed white, crusty growth on the leaves. Or maybe you saw a sticky, blackened mess of fallen leaves under a eucalyptus tree. These are signs of the redgum lerp psyllid, one of the most common psyllid pests...
By Karey Windbiel-Rojas
Author - Associate Director for Urban & Community IPM/ Area Urban IPM Advisor
