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.

8 Results

List Grid

Herbicide Resistant Marestail (horseweed) in Pennsylvania
Herbicide Resistant Marestail (horseweed) in Pennsylvania - Videos Videos
Marestail (horseweed) resistant to glyphosate and Group 2 herbicides is present in PA and presents management challenges. More
Marestail (horseweed) in Rock Springs, PA (Annie Klodd)
Managing Herbicide Resistant Marestail (horseweed) - Videos Videos
Best management practices for resistant marestail (horseweed) More
Consider including violets in landscapes, or just leaving them where they are doing well. Photo: Kathleen Salisbury
Underused Native Plants: Common Blue Violets - Articles Articles
Native plants have become very popular over the years. More
Harrington Seed Destructor
Harrington Seed Destructor - Videos Videos
Penn State is involved in research on Harvest Weed Seed Control for herbicide resistant weeds. Here, the HSD is described as it operates during harvest. More
Newly emerged pigweeds in Berks Co., June 13, 2017 (Photo: Annie Klodd, Penn State)
Palmer Amaranth and Waterhemp Beginning to Emerge - News News
Palmer amaranth and waterhemp have emerged for the season in Pennsylvania. It is important to scout for these invasive weeds now, and control them before they reach 4 inches tall. More
Ideas On Herbicide Resistance Shared At Regional Meeting Ideas On Herbicide Resistance Shared At Regional Meeting - News
A productive discussion was had in Lancaster on the challenges, successes, and needs going forward for managing herbicide resistant weeds in the mid-Atlantic. More
Clean the Combine to Stop Spread of Herbicide Resistant Weeds
Clean the Combine to Stop Spread of Herbicide Resistant Weeds - Articles Articles
Thorough cleaning and knowledge of the combine’s prior use can prevent the introduction of new herbicide-resistant weeds to your fields. More
Invasive Pigweeds: Palmer Amaranth and Waterhemp
Invasive Pigweeds: Palmer Amaranth and Waterhemp - Articles Articles
Palmer amaranth is a species of pigweed that was recently introduced into PA and has been positively identified on more than 30 sites across the state. More