Lawn and Garden Care: Weed Management

Chris Marble, Joe Neal, andAndy Senesac

This article is written for landscape professionals and those maintaining landscape areas to guide them in selecting alternatives to glyphosate for postemergence weed control in Florida. Information is also included on preemergence herbicides and integrated weed management (use of chemical and non-chemical controls), which should be the basis of a weed management program.

Chris Marble

Andrew MacRae, Nathan Boyd, and Marina D'Abreau

Debalina Saha, Chris Marble, Nathan Boyd, and Shawn Steed

A UF/IFAS numbered peer reviewed Management for Commercial audience(s). Published by Plant Systems

Norma Samuel andChris Marble

The purpose of this publication is to provide examples of weeds commonly found under certain environmental conditions. While weeds can be an indicator of a certain condition, some weed species can thrive in many different environments and are indicated in the following tables with an asterisk. For example, spotted spurge (Euphorbia maculata) can be indicative of a dry site, but it will grow and spread very well in sites that are over-irrigated also. The presence of one or two weed species is not necessarily diagnostic to a specific cultural problem, but heavy infestations or the presence of multiple species that prefer a particular condition could indicate that cultural practices should be altered.

Heather Kalaman andChris Marble

Several native and non-native dayflower (Commelina) species can be found in Florida landscapes and production nurseries. Two of the most widely distributed species include the native whitemouth dayflower (Commelina erecta) and the non-native spreading dayflower (Commelina diffusa), which is thought to have been introduced to Florida from Asia. Both species are widely distributed and have been vouchered in nearly every county in Florida. This publication is written for home gardeners and other green industry professionals to aid in the proper identification of these two common dayflower species. General management information is included for both dayflower species.

Chris Marble and Andrew Koeser

A UF/IFAS numbered Management. in support of UF/IFAS Extension program: Integrated Pest Management

Evan Anderson, Pawel Petelewicz, and Chris Marble

This new 7-page article was written for homeowners and green industry professionals to aid in the identification and management of the three most common pusleys, including Florida, Brazilian, and largeflower pusley (Richardia spp.), in turfgrass and landscape planting beds. Written by Evan Anderson, Pawel Petelewicz, and Chris Marble, and published by the UF/IFAS Environmental Horticulture Department.

Yuvraj Khamare, Candice Prince, and Chris Marble

Torpedograss is one of the most invasive perennial grass species in Florida landscapes. This new 5-page publication of the UF/IFAS Environmental Horticulture Department was written for green industry professionals and others to aid in the identification and management of torpedograss in landscape planting beds. Written by Yuvraj Khamare, Candice Prince, and Chris Marble.

Pawel Petelewicz, J. Bryan Unruh, andRamon Leon

This document is a tool for turfgrass professionals, sod producers, golf course superintendents, athletic and sports fields managers, landscape managers, and extension specialists to help develop herbicide programs that reduce the risk of herbicide resistant weeds in turfgrass systems.

Cliff G. Martin and Zachary T. Brym

This article provides a reference for the most competitive weeds found in south Florida open areas with Rockdale soil. Written by Cliff G. Martin and Zachary T. Brym, and published by the UF/IFAS Agronomy Department, January 2022.

Ping Yu, Chris Marble, andErnest Kraka

Johnsongrass is a warm-season perennial grass and one of the most persistent and troublesome weeds in the southern United States. This new 5-page publication of the UF/IFAS Environmental Horticulture Department was developed to help commercial nursery growers, landscapers, and other green industry professionals identify and manage johnsongrass. Written by Ping Yu, Ernest Kraka, and Chris Marble.

Thomas Smith and Chris Marble

A UF/IFAS numbered peer reviewed Fact Sheet. Published by Integrated Pest Management

J. Bryan Unruh, Pawel Petelewicz, Laurie E. Trenholm, Laurie Trenholm, Erin E. Harlow, Ramon Leon, andRamon Leon

Weeds can be defined as unwanted plants or plants growing out of place. Proper identification and some understanding of how and why weeds are present in a lawn are important when selecting the best control strategy. Knowing if weeds were previously present in an area also helps homeowners prepare control measures in the future. Weed control should be a carefully planned and coordinated program.

Chris Marble, Jason Smith, Timothy K. Broschat, Adam Black, Ed Gilman, and Celeste White

This document discusses the potential damage to ornamental plants when metsulfuron-methyl-containing herbicides are applied to turfgrass. It highlights the herbicide’s effectiveness in controlling broadleaf weeds but warns of its adverse effects on non-target ornamental species. The article provides guidelines for minimizing damage, including proper application techniques and timing. It also emphasizes the importance of understanding the herbicide’s properties and the susceptibility of various ornamental plants to avoid unintended harm. Original publication date April 2016.

Yuvraj Khamare andChris Marble

Black medic is an annual or short-lived perennial commonly found in lawns, landscapes, containers, and orchards throughout Florida. This publication is intended for green industry professionals, Extension agents, homeowners, and others to provide guidance on the identification and management of black medic in and around ornamental plants.

Maria A. Rodriguez andChris Marble

Euphorbia maculata is a summer annual weed characterized by its freely branched, prostate stems that do not root at the nodes. Spotted spurge reproduces by seed and has a rapid growth rate, allowing it to establish quickly in a wide range of environments including landscape planting beds, turfgrass, container and field nurseries, and many other agricultural settings. This publication is intended for use by nursery and landscape professionals, home gardeners, landowners, Master Gardener Volunteers, Extension agents, and others to aid in the identification and management of spotted spurge in ornamental crop production and in landscapes.

Yuvraj Khamare andChris Marble

Poison ivy is an allergenic plant of the cashew family native to North America. Poison ivy, poison oak, and poison sumac all grow in Florida and contain the oily resin called urushiol. This new 4-page publication of the UF/IFAS Environmental Horticulture Department was written to aid landowners, gardeners, horticulturalists, and pest management professionals in identification and management of poison ivy in residential and commercial landscapes. Written by Yuvraj Khamare and Chris Marble.

Heather Kalaman andChris Marble

Asiatic false hawksbeard is a common, annual broadleaf weed found across Florida landscapes, agricultural production systems, home gardens, and natural areas. This article is written for home gardeners, commercial growers, and other green industry professionals to aid in the proper identification and management of Asiatic false hawksbeard in the landscape and in nursery production.