- (Public Value) UCANR: Protecting California's natural resources
- Author: Christopher J Mcdonald
Roadsides are often a very difficult place to control weeds. Weeds thrive on roadsides and roadsides and rights of way are obviously long and narrow. Weeds along the edge of the shoulder need to be cleared to reduce fuels to prevent wildfires, and to ensure safety for drivers and also so that weeds do not damage the road surface or shoulder structure.
Herbicide applications on roadsides are often conducted at large scales where several acres to many acres are treated in a day. Roadside equipment can also be highly specialized ensuring large stretches of public roads and adjacent lands are better protected.
Herbicide applications on roadsides should be calibrated to ensure the...
- Author: Justin Valliere
Wildfire is an important ecological process that shapes patterns of plant diversity in many Mediterranean ecosystems, including California. In coastal sage scrub and chaparral, for example, plant diversity is often highest in the growing seasons immediately after a site burns, with many fire-following species emerging from the soil seed bank and bud bank. This often results in spectacular displays of wildflowers when sufficient rainfall occurs following fire.
In a recent study published in Global Change Biology, however, we found that persistence of these unique, fire-following wildflowers may be threatened by invasive plant species as well as nitrogen...
A recent article in the LA Times argued that California native plants should not be the only option for drought-tolerant landscaping. Missing from this perspective was a discussion of the severe threat that many non-native plants pose to California's unique and biodiverse ecosystems including reduced native plant establishment and increased fire risk. Additionally, we know that the nursery trade plays an important role in driving these invasions. For example, a recent study by researchers at the...
How can weed control help with wildfire preparedness?
Wildfires are part of California's ecosystems, and they do not have to lead to the destruction of structures and livelihoods. Each of us can contribute to improving wildfire resilience, from individual homeowners and businesses to entire communities. Managing the vegetation and landscape around our homes can play a crucial role in preventing the spread of fires and sources of ignition.
Given the large amount of rain in the winter of 2022-2023, you might have experienced a surge in annual grasses and fast-growing plants that cover most of the ground around your home and community. In my area, I observed invasive species like wild oats and mustard.../h2>
- Author: Christopher J Mcdonald
It's October and it's weeding season! That's not a phrase we regularly hear. In many years in California October can be a month where weeding is a low priority task. With the late spring rain and then the remnants of the August hurricane that came through, coupled with some wet, cool misty days lately, we had a lot of summer annuals germinate and survive. However, at least in Southern California quite a few winter annuals have also germinated. And then with recent rains in October those annual weeds are starting to put on a lot of new growth.
As I've been doing some driving lately, I've been seeing quite an interesting blend of weeds in Southern California. I'm seeing tumbleweed, puncturevine or goat's head (so much...