- Author: Brad Hanson
The IR4 program conducts a significant amount of research to facilitate registration of pesticides (both conventional and biopesticides) on specialty crops. The program also supports similar work on a range of non-food crops through the Environmental Horticulture program.
Recently, the IR4 Environmental Horticulture program (authors Vea, Hester, and Palmer) published an online report about a series of experiments conducted between 2008-2019 to evaluate Oxalis spp in container nurseries. This summary of 27 experiments included a range of preemergence herbicides and some postemergence materials on several key oxalis species.
Lots of great information in this...
From the Retail Nursery an Garden Center IPM News Fall 2018 newsletter
Managing Weeds in Landscapes
Nurseries and garden centers often sell a wide range of plants for use in gardens and landscapes. Your customers may manage a complex array of different landscape plantings, including woody trees and shrubs, woody ground cover beds, annual flower beds, herbaceous perennial beds, and mixed plantings (Figure 1). This complexity often makes weed management difficult. An integrated approach is the most economical and efficient way to control weeds, so knowing strategies for managing weeds in a variety of landscapes can help you advise customers.
- Author: Joseph DiTomaso
Through Sustainable Conservation and the California Horticultural Invasives Prevention (Cal-HIP) committee, the PlantRight campaign was founded in 2005. PlantRight has brought together leaders from the nursery industry, environmental groups, and academics. Its goal is to address the ongoing sale of invasive garden plants in California and to develop a strategy to remove these plants from retail sale, as well as to prevent new potentially invasive plants from being introduced. To accomplish this first objective, PlantRight teamed with the UC Master Gardener program in 2011 to survey over 225 retail nurseries throughout the state for 19 known invasive species originating from the industry. The...