
It's National Invasive Species Week (February 27-March 3), which may prompt the question, “what exactly is an invasive species?” A truly invasive species is a non-native plant, animal or pathogen that causes or may cause economic problems, or threaten the environment or human health.
Why should this matter to you? Every 60 days, our state gains a new and potentially damaging invasive species. Because the things you do can directly impact the environment and economy of California, here are the top 10 ways:
- Learn about the invasive species that live in your region. Check with your county agricultural extension...
![Fig. 1 (a) Dying and dead Diplacus aurantiacus (orange bush monkeyflower) with advanced above ground symptoms, typical of Phytophthora disease. The infected plant has chlorotic (yellowing and browning) foliage. [L. Sims]](https://ucanr.edu/blogs/UCIPMurbanpests/blogfiles/40702small.jpg)
[From the December 2016 issue of the UC IPM Green Bulletin]
A new plant pathogen in the genus Phytophthora (pronounced Fie-TOF-ther-uh) has recently been found in several California native plant nurseries and habitat restoration sites. The pathogen, Phytophthora tentaculata, poses a risk of disease in wildlands, gardens and landscapes that use susceptible California native and non-native plants. Once introduced in these areas, the pathogen can generate disease for years to come, potentially causing lasting environmental and economic...
/span>- Author: Karey Windbiel-Rojas
- Author: Anne Schellman
![Big periwinkle, vinca major. [J. M. DiTomaso]](https://ucanr.edu/blogs/UCIPMurbanpests/blogfiles/34678small.jpg)
Did you know that every 60 days, California gains a new and potentially damaging invasive species? Once established, invasive species are extremely difficult to eradicate and can cause not only ecological disruption, but economic problems as well.
This week (February 21-27) is National Invasive Species Awareness Week. The goal of the week is to raise awareness and identify solutions to invasive species.
What is an invasive species? The term “invasive” is often used to describe something that appears to be taking over a garden or landscape. However, according to the National Invasive Species Council, a true invasive species is...
- Author: Karey Windbiel-Rojas

Did you know that this week (June 6 - June 14) is California Invasive Species Action week? The goal of this week is to increase public awareness of invasive species issues and share ways we can all participate in the fight against California's invasive species and their impacts on our environment and natural resources.
Find out more about California Invasive Species Action week, species of concern, schedule of events, and what you can do to help prevent invasive species at https://www.wildlife.ca.gov/Conservation/Invasives/Action-Week.
The University of...
- Author: Mary Louise Flint

[From the April 2014 issue of the UC IPM Green Bulletin newsletter]
Over the last several decades dozens of exotic pests have invaded California landscapes, causing at least temporary havoc and sometimes severely affecting the aesthetic value of plants or even killing them. Giant whitefly, hackberry woolly aphid, eucalyptus red gum lerp psyllid, Diaprepes root weevil, myoporum...