Plant Information Lagerstroemia or crape myrtle is a genus of about 50 species of deciduous and evergreen trees and shrubs in the family Lythraceae, that are native to the Indian subcontinent, southeast Asia, northern Australia and parts of Oceania, cultivated in warmer climates around the world. The most popular species, Lagerstroemia indica, arrived in England […]
Category: Environmental Horticulture Program
IR-4 Environmental Horticulture Team Responds to Presence of Box Tree Moth in the US
Recent confirmation of the presence of Box Tree Moth (BTM) in the United States has prompted IR-4’s Environmental Horticulture Program to respond with information for growers to help identify and eradicate the pest.
Crop Vignette: Impatiens
Plant Information Impatiens is a genus of more than 1,000 flowering plants in the family Balsaminaceae widely distributed throughout the Northern Hemisphere and the tropics. Most Impatiens species occur in the tropical and subtropical mountain forests in Africa, Madagascar, the Himalayas, the Western Ghats (southwest India), and Southeast Asia. Two species (I. turrialbana and I. […]
Indaziflam Crop Safety – 2021
From 2011 through 2020, IR-4 has completed 159 trials evaluating two granular and one liquid formulations of indaziflam for crop safety. The data contained in this report was generated to
Isoxaben + Dithiopyr Crop Safety – 2021
Fortress (isoxaben + dithiopyr) was registered in 2018 for environmental horticulture crop uses. Between 2018 and 2020, IR-4 examined 17 crop species / genera to expand this label to
Crop Vignette: Holly
Plant Information Ilex or holly is a genus of about 480 species of flowering plants in the family Aquifoliaceae, and the only living genus in that family. The species are evergreen or deciduous trees, shrubs, and climbers from the tropics to temperate zones worldwide. The common ancestor of most of the extant species probably appeared […]
IR-4 Project Facilitating Two Studies to Track and Mitigate Invasive Pests
Two multi-institutional research studies will soon be underway to analyze the movement and mitigation of invasive pests negatively impacting plants in North America.
Botrytis Efficacy Summary – 2021
At the IR-4 Environmental Horticulture Program Workshop in 2011, Botrytis Efficacy was selected as a high priority project to expand the knowledge and list of fungicides available to growers for these diseases.
SOAR Award: Nomination Deadline Extended to April 19
The IR-4 Project is now accepting nominations for the 2021 SOAR Award. This award honors external partners who exemplify the areas of Service, Outreach, Altruism and Research, while supporting specialty crop growers and the mission of the IR-4 Project. If you know someone who demonstrates excellence in these areas, we encourage you to nominate them for this award. Nominees […]
Crop Vignette: Flowering Cherry
Plant Information Ornamental flowering cherries belong to the genus Prunus in the rose family Rosacea, consisting primarily of species native to Asia. The majority of the flowering species are native to Japan and Korea, where centuries of propagation and cultivation have led to the selection of hundreds of genotypes. The most well-known ornamental cherry is […]