Have you had unexpected seeds show up in the mail? Unknown seeds could be invasive plants, contain invasive insects, or have plant disease causing agents. Here's what the United States Department of Agriculture Animal Plant and Health Inspection Service (USDA APHIS) has to say about it.
USDA Investigates Packages of Unsolicited Seeds
USDA is aware that people across the country have received suspicious, unsolicited packages of seed that appear.../h2>
- Author: Elaine Lander
Brooms are shrubs which were originally planted in California as ornamentals and for erosion control, but are now considered to be invasive weeds since they are highly competitive. They crowd out native plants and form impenetrable barriers to wildlife. There are four common species of broom in California: Scotch broom, French broom, Spanish broom and Portuguese broom.
In the newly revised Pest Notes: Brooms, UCCE advisor Scott Oneto and UC Davis weed scientists Joe DiTomaso and Guy Kyser explain the issues with planting these invasive species. The publication includes expanded sections on biology and management and updated herbicide...
Invasive species are non-native plants, animals, or pathogens that can cause economic or environmental harm. This year, we will be spotlighting several different invasive species that are established in California to raise awareness and help reduce their spread. Stay tuned—we will be showcasing a different invasive species each day and where you can find more information.
Want to learn more about California Invasive Species Action Week? Check out the full schedule of...
- Author: Elaine Lander
Mistletoe is a familiar sight of the season, often found wrapped in ribbon and hung for certain festivities this time of year. But did you know it is actually a parasitic plant that grows on a number of landscape trees in California?
There are two types of mistletoe in California. Broadleaf mistletoes attack certain broadleaf trees and some conifers while dwarf mistletoes attacks only conifers. Broadleaf mistletoes have green stems with thick, oval leaves. Dwarf mistletoes are smaller, with short stems and yellow scaly leaves.
Both types of mistletoe grow through tree bark and into the tree's tissue, living off the host tree. Healthy trees can typically tolerate a few mistletoe infections although individual branches may...
Controlling weeds can be challenging to landscape professionals or home gardeners since landscapes often include a mix of turfgrass, annual plants, herbaceous perennials, shrubs, and trees.
The newly revised publication Pest Notes: Weed Management in Landscapes by Area IPM Advisor Cheryl Wilen, presents an integrated approach to weed management to help ensure weed control efforts are effective, environmentally-sound and economical. This science-based publication includes information on methods such as pre-planting considerations, the importance of weed identification, nonchemical practices such as using mulches and barriers, weed management...