Weed Identification and Control
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.
Articles Noxious Weed - Catsear
Brittani Kirkland
Catsear is a common weed found in horse pastures. While typically not an issue unless consumed in large quantities, horse owners should manage catsear presence in pastures and limit their horses contact with the plant. More
Articles Tree-of-Heaven
David R. Jackson, Art Gover, Sarah Wurzbacher
Tree-of-heaven (Ailanthus altissima) is an invasive tree and noxious weed in PA. This article displays images to assist with identification and provides recommendations for control, including a management calendar and treatment and timing table. More
News With recent efforts to combat invasive plants in woodlands, Penn State Extension has released new resources to help with identification and control. A total of 14 new invasive plant fact sheets are now available. More
Articles Callery Pear
David R. Jackson, Art Gover, Sarah Wurzbacher, Skylure Templeton
Callery pear (Pyrus calleryana) is an invasive landscape tree. This article displays images to assist with identification and provides recommendations for control, including a management calendar and treatment and timing table. More
Articles Mile-a-minute
David R. Jackson, Art Gover, Sarah Wurzbacher, Skylure Templeton
Mile-a-minute (Persicaria perfoliata) is an invasive vine and noxious weed in PA. This article displays images to assist with identification and provides recommendations for control, including a management calendar and treatment and timing table. More
Articles Japanese Stiltgrass
Art Gover, David R. Jackson, Sarah Wurzbacher, Skylure Templeteon
Japanese stiltgrass (Microstegium vimineum) is an invasive annual grass. This article displays images to assist with identification and provides recommendations for control, including a management calendar and treatment and timing table. More
Articles Oriental Bittersweet
Art Gover, David R. Jackson, Sarah Wurzbacher, Skylure Templeteon
Oriental bittersweet (Celastrus orbiculatus) is an invasive, perennial, woody vine. This article displays images to assist with identification and provides recommendations for control, including a management calendar and treatment and timing table. More
Webinars Earn 2 credits in Cat. 09, 10, 18, 23, and Private during this recorded webinar and gain insight and beneficial information for vegetation managers. More
Articles Poison Hemlock Identification and Management Resources
Liz Bosak, PhD
Poison hemlock is a highly toxic weed commonly found along roadsides, creeks, drainage ditches, and low-lying areas of fields and pastures. Identification is the first step to managing this problematic weed. More
Articles Buckthorn
Art Gover, David R. Jackson, Sarah Wurzbacher, Skylure Templeteon
Common (Rhamnus cathartica) and glossy (Frangula alnus) buckthorns are invasive trees. This article displays images to assist with identification and provides recommendations for control, including a management calendar and treatment table. More
Articles Burning Bush
Art Gover, David R. Jackson, Sarah Wurzbacher, Skylure Templeteon
Burning bush (Euonymus alatus) is an invasive shrub used in landscape plantings. This article displays images to assist with identification and provides recommendations for control, including a management calendar and treatment and timing table. More
Articles Privet
Art Gover, David R. Jackson, Sarah Wurzbacher, Skylure Templeteon
Privet (Ligustrum spp.) consists of several species of invasive shrubs. This article displays images to assist with identification and provides recommendations for control, including a management calendar and treatment and timing table. More
Articles Garlic Mustard
David R. Jackson, Art Gover, Sarah Wurzbacher, Skylure Templeton
Garlic mustard (Alliaria petiolata) is an invasive biennial weed. This article displays images to assist with identification and provides recommendations for control, including a management calendar and treatment and timing table. More
Articles Shrub Honeysuckles
Art Gover, David R. Jackson, Sarah Wurzbacher, Skylure Templeteon
Shrub honeysuckles (Lonicera spp.) consists of several species of invasive shrubs. This article displays images to assist with identification and provides recommendations for control, including a management calendar and treatment and timing table. More
Articles Autumn Olive
David R. Jackson, Art Gover, Sarah Wurzbacher, Skylure Templeton
Autumn olive (Elaeagnus umbellata) is an invasive shrub. This article displays images to assist with identification and provides recommendations for control, including a management calendar and treatment and timing table. More
Articles Multiflora Rose
Art Gover, David R. Jackson, Sarah Wurzbacher, Skylure Templeteon
Multiflora rose (Rosa multiflora) is an invasive shrub and noxious weed in PA. This article displays images to assist with identification and provides recommendations for control, including a management calendar and treatment and timing table. More
Articles Japanese Knotweed
Art Gover, David R. Jackson, Sarah Wurzbacher, Skylure Templeteon
Japanese knotweed (Fallopia japonica) is an invasive perennial and noxious weed in PA. This article will assist with identification and provides recommendations for control, including a management calendar and treatment and timing table. More
Articles Japanese Barberry
Art Gover, David R. Jackson, Sarah Wurzbacher, Skylure Templeteon
Japanese barberry (Berberis thunbergii) is an invasive shrub used in plantings. This article displays images to assist with identification and provides recommendations for control, including a management calendar and treatment and timing table. More
Guides and Publications Mid-Atlantic Field Crop Weed Management Guide
John Wallace, Ph.D., Dwight Lingenfelter, William S. Curran, Ph.D.
258
From: $15.00
To: $35.00
Get strategies and peruse herbicide tables for managing weeds in corn, sorghum, soybeans, small grains, and forages. More
Videos Poison Hemlock Identification
Liz Bosak, PhD
2:08
Learn how to identify poison hemlock, a toxic weed, growing in Pennsylvania. More
Videos Tree of Heaven: Native Look-alikes
David R. Jackson
5:06
Learn the identification characteristics of the invasive tree-of-heaven and be able to distinguish it from the native look-alikes, black walnut and staghorn sumac. More
Videos Tree of Heaven: Control Strategies
David R. Jackson
6:37
Tree-of-heaven is especially difficult to eliminate. Learn when and how to apply control measures, including herbicides, to eradicate this prolific tree. More
Videos Controlling Tree of Heaven: Why it Matters
David R. Jackson
3:53
Learn about the invasive tree-of-heaven, commonly found in Pennsylvania, and how you can use it to help control another invasive species, spotted lanternfly. More
Videos Tree of Heaven: Accurate Identification
David R. Jackson
3:47
Learn the distinguishing characteristics of the invasive tree-of-heaven that you can use to accurately identify it. More
Online Courses $15.00
Learn management and herbicide use for weeds such as lambsquarters, Palmer amaranth, foxtails and crabgrass. Earn pesticide applicator recertification credits. More