Pests And Weeds

Many gardeners and landscapers enjoy growing and caring for roses. Through careful selection of varieties and appropriate cultivation, roses can be grown with a minimum of pest problems.

[Originally published as "Managing Weeds in Landscapes" published in the Fall 2018 issue of the Retail Nursery and Garden Center IPM News.] Nurseries and garden centers often sell a wide range of plants for use in gardens and landscapes.

I recently attended a Santa Ana River Orange County Weed Management Area (SAROCWMA) meeting and there was an opportunity for participants to update the group about new invasive plants as well as give an update on management of these and others.

Before hiking, backpacking, or camping, people are warned to avoid poison oak.

[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.

When people think of parasites, often what comes to mind are blood-sucking insects like bed bugs, head lice, and fleas or other bodily invaders on or in humans and other animals. But plants can have parasites too.

People in urban and suburban areas often use the term invasive to describe plants or weeds that appear to take over a garden or landscape. However, true invasive plants are weeds that infest ecosystems, rangelands, and pastureplaces common garden weeds don't thrive.

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.

In mid-March, many people use clover-themed decorations in preparation for St. Patrick's Day. Many gardens and landscaped areas are decorated with clovers too, especially with recent rains and mild temperatures in much of California.

Campers and hikers are often warned to avoid poison oak in summer by looking out for green plants with glossy leaflets of three. However, as weather cools, the appearance of the plant changes, making it more difficult to identify.