Weed Identification and Control

Information on weed identification and control, including catsear, marestail, purple loosestrife, pokeweed, pigweed, poison ivy, crabgrass, hemlock, purslane and multiflora rose. Tips on various herbicides and integrated pest management.

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Tree of heaven leaves. Credit: Bigstock
Tree-of-Heaven - Articles Articles

Tree-of-Heaven

David R. Jackson, Art Gover

Tree-of-heaven (Ailanthus altissima) also known as ailanthus, is a rapidly growing deciduous tree native to a region extending from China south to Australia. Spotted Lanternfly, an invasive pest, is particularly attracted to Tree-of-heaven. More
Fern-dominated forest understories interfere with forest regeneration and provide poor habitat for wildlife. Photo Credit: David Jackson
Controlling Understory Fern Competition for Regeneration Success - Articles Articles
Dense understories of hay-scented, New York, and bracken fern can interfere with the regeneration of hardwood forests, threatening their sustainability. More
Japanese and Giant Knotweed
Japanese and Giant Knotweed - Articles Articles

Japanese and Giant Knotweed

David R. Jackson

Japanese knotweed (Polygonium cuspidatum) and Giant knotweed (Polygonum sachalinensis) are two invasive, exotic weeds found throughout much of the United States and Canada. More
Japanese Barberry
Japanese Barberry - Articles Articles

Japanese Barberry

David R. Jackson

Japanese barberry (Berberis thunbergii) was introduced from Japan around 1875. It now ranges from Nova Scotia south to North Carolina, and westward to Montana. More
Autumn Olive
Autumn Olive - Articles Articles

Autumn Olive

David R. Jackson

Autumn olive (Elaeagnus umbellata) is an exotic deciduous shrub and has been listed as a noxious weed throughout much of its range. More
Herbicide Summary - Escort XP Herbicide Summary - Escort XP - Articles

Herbicide Summary - Escort XP

David R. Jackson

Controls many annual and perennial broadleaf weeds and woody plants, especially effective on kudzu vine and multiflora rose; used in conifer site preparation. More
Herbicide Summary - Clean Slate Herbicide Summary - Clean Slate - Articles
Provides postemergence control of most broadleaf weeds including thistle and kudzu vine; applied as either a site preparation or tree release application for both conifer and hardwood planting sites More
Herbicide Summary - Element 3A Herbicide Summary - Element 3A - Articles

Herbicide Summary - Element 3A

David R. Jackson

For controlling woody plants, broadleaf weeds, and vines; broadcast treatments for site preparation and release of spruce, fir, red pine, and white pine from competing hardwoods. More
Herbicide Summary - Forestry Garlon XRT Herbicide Summary - Forestry Garlon XRT - Articles
For controlling woody plants as well as annual and perennial broadleaf weeds; broadcast treatments for site preparation and release of conifers; used to control cut stump re-sprouting. More
Herbicide Summary - Trooper 22K Herbicide Summary - Trooper 22K - Articles
Broadcast or spot treatments used to control noxious, invasive, or other annual and perennial broadleaf weeds, woody plants, and vines; primarily for conifer site preparation. More
Herbicide Summary - Refuge Herbicide Summary - Refuge - Articles

Herbicide Summary - Refuge

David R. Jackson

Controls annual and perennial weeds, grasses, vines, and woody plants; broadcast and spot treatments for hardwood brush and fern control or for site preparation. More
Herbicide Summary - Relegate RTU Herbicide Summary - Relegate RTU - Articles
Use any time of year to control individual stems up to 6 inches in diameter and cut stump resprouting; stumps can be treated up to one month following cutting. More
Herbicide Summary - Rodeo Herbicide Summary - Rodeo - Articles

Herbicide Summary - Rodeo

David R. Jackson

Controls annual and perennial weeds, grasses, vines, and woody plants; broadcast and spot treatments for hardwood brush and fern control; directed spray and broadcast treatments for conifer release. More
Herbicide Summary - Trooper 101 Mixture Herbicide Summary - Trooper 101 Mixture - Articles
Used for control of most annual and perennial broadleaf weeds, woody plants, and vines on forest planting sites. More
Herbicide Summary - VelparL Herbicide Summary - VelparL - Articles

Herbicide Summary - VelparL

David R. Jackson

Used to control most annual, biennial, and perennial weeds and woody vegetation for conifer site preparation and in the establishment of yellow poplar plantations. More
Herbicide Summary - Velossa Herbicide Summary - Velossa - Articles

Herbicide Summary - Velossa

David R. Jackson

Used to control most annual, biennial, and perennial weeds and woody vegetation for conifer site preparation and release and in the establishment of yellow poplar plantations. More
Herbicide Summary - Element 4 Herbicide Summary - Element 4 - Articles

Herbicide Summary - Element 4

David R. Jackson

For controlling unwanted woody plants, including mountain laurel, as well as annual and perennial broadleaf weeds; use for site preparation and to control cut stump re-sprouting of individual stems. More
Herbicide Summary - Pathfinder II Herbicide Summary - Pathfinder II - Articles
Used any time of year to control individual stems and cut stump re-sprouting; stumps can be treated up to one month following cutting. More
Herbicide Summary - Transline Herbicide Summary - Transline - Articles

Herbicide Summary - Transline

David R. Jackson

Provides post-emergence control of most broadleaf weeds including thistle and kudzu vine; applied as either a site preparation or tree release application for both conifers and hardwoods. More
Herbicide Summary - Arsenal AC Herbicide Summary - Arsenal AC - Articles

Herbicide Summary - Arsenal AC

David R. Jackson

For postemergence and residual control of many grasses, broadleaf weeds, vines, and woody vegetation; used mostly for site preparation and conifer release. More
Herbicide Summary - Chopper Herbicide Summary - Chopper - Articles

Herbicide Summary - Chopper

David R. Jackson

Used to control grasses, broadleaf weeds, vines, and woody vegetation for conifer crop species site preparation. More
Herbicide Summary - DMA 4 IVM Herbicide Summary - DMA 4 IVM - Articles

Herbicide Summary - DMA 4 IVM

David R. Jackson

Controls many annual and perennial broadleaf weeds, vines, and woody plants when they are actively growing; generally used for forest site preparation and conifer release including Christmas trees. More
Herbicide Summary - OneStep Herbicide Summary - OneStep - Articles

Herbicide Summary - OneStep

David R. Jackson

Used as post emergent spray to control most annual and perennial grasses, broadleaf weeds, vines, and woody vegetation for conifer planting site preparation. More
Herbicide Summary - Foresters' Herbicide Summary - Foresters' - Articles

Herbicide Summary - Foresters'

David R. Jackson

Controls annual and perennial broadleaf weeds, grasses, vines, and woody plants; ground broadcast treatments for hardwood brush and fern control or pine release. More
Herbicide Summary - Krenite S Herbicide Summary - Krenite S - Articles

Herbicide Summary - Krenite S

David R. Jackson

Recommended for postharvest control of pine and hardwood species for southern pine planting site preparation; also used to control cut stump resprouting. More
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