- Author: John A Roncoroni
[From the Spring issue of the UC IPM Retail Nursery & Garden Center News]
“I hate crabgrass!” is a common lament I've heard from residents during my 35 years as a UCCE Weed Science Farm Advisor. However, four out of five times, the weed people are actually referring to is not crabgrass, but bermudagrass or dallisgrass. So why does knowing the name of the weed matter? It doesn't—unless you are trying to control it!
There are two annual weed species of crabgrass: large crabgrass and smooth crabgrass. Large crabgrass, sometimes.../span>
Nutgrass, also called nutsedge, could easily be one of the top 5 nuisance weeds gardeners deal with in the garden and landscape. While we don't know that for sure, we do know that nutsedge is a very challenging weed to control.
Yellow and purple nutsedge are the two species most often found in California. Yellow nutsedge grows throughout the state, while purple nutsedge is found mostly in southern California.
Nutsedge is difficult to control because the plants form small underground tubers and rhizomes. Most of these tubers are found in the top six inches of the soil but can also be found even deeper. Removing the tubers by hand is the best way to remove small plants but may require continued monitoring and hand...
Finding freshly dug mounds of soil in the garden, lawn, or landscape might be a sign of gophers or moles. Their mounds look similar and are frequently confused for each other.
Figure 1 shows a mole mound, which usually is volano-shaped with a circular margin. Figure 2 illustrates a gopher mound and the characteristic crescent shape and plugged opening. Actual mounds may look slightly different from these pictures, but the descriptions are typical of the two vertebrates.
The burrowing activity of both moles and gophers can damage plant roots by dislodging and drying them out. Mounds themselves can be an aesthetic problem in turf and landscapes, but they can also be tripping hazards. Both species eat plant material, and in...
Dandelions are broadleaf plants easily recognizable by their bright yellow flower and puffball of white tufted seeds heads. While this plant is appreciated as a food or herb by many, for equal numbers of others it is regarded as a weed when found growing in lawns, ornamental plantings, and athletic fields throughout the year.
For helpful nonchemical and chemical management solutions to help you control this weed, read the newly revised Pest Notes: Dandelion by UC Cooperative Extension Advisor John Roncoroni.
Register for the U.S. EPA Webinar: It Takes an Integrated Pest Management Village - IPM for a Healthier Home and Community
Date: Tuesday, January 23, 2018
Time: 2:00 – 3:00 p.m. ET (11:00 a.m. – 12:00 p.m. PT), Followed by a live Q&A session
This webinar will prepare you to—
- Identify various types of pests in your home environment and determine the best control tactics.
- Understand the importance of utilizing integrated pest management practices indoors and...