Weed Management

Information on weed management and control of home gardening, including purple loosestrife, ragweed, pokeweed, knotweed, pineappleweed and poison ivy. Tips on mulches and integrated pest management.

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Turfgrass
Home Lawn Care Workshop - Workshops Workshops
Learn proper methods of weed control, lawn renovation and management of lawn pests. More
Epipactis helleborine. Photo: Amy Korman, Penn State
Be on the Lookout for Invasive Orchids - News News
Epipactis helleborine, the Broad-leaved Helleborine, is an invasive orchid that continues to plague Pennsylvania landscapes. More
Georgia Department of Ag., Bugwood.org
It's Time to Plant! - Workshops Workshops
Come join Penn State Master Gardeners of Carbon County as they present their spring workshop "It's Time to Plant." More
USDA map showing where Buddleia is invasive
Avoiding Invasives: Butterfly Bush - Articles Articles

Avoiding Invasives: Butterfly Bush

Constance Schmotzer

How could the ever popular butterfly bush possibly be a problem for pollinators when it attracts butterflies and is highly marketed as a “must-have” plant for butterfly gardens? More
Master Gardener Basic Training
Master Gardener Basic Training - Workshops Workshops
Are you passionate about gardening? Would you like to share your interest? Start your path to become a Penn State Master Gardener! More
Veronicastrum virginicum - culver's root
Weeds in the Fields - Articles Articles

Weeds in the Fields

Mary Ann Ryan

When driving, we often see flowering weeds in fields or roadsides. Casual walks along a country road may cause us to stop and check out the weeds of summer. More
Acer rubrum Red Sunset® on a commercial site with suspected glyphosate damage. Photo: S. Feather, Penn State
Use Glyphosate With Care Near Trees! - Articles Articles
Glyphosate is the active ingredient in non-selective, systemic herbicides sold under a variety of trade names – Round Up, Accord, Glypro, and many others. More
Natural Areas and Purple Loosestrife
Natural Areas and Purple Loosestrife - Articles Articles
Importance and background of natural areas, including activities related to monitoring and controlling Purple Loosestrife. More
Alton N. Sparks, Jr., University of Georgia, Bugwood.org
Integrated Pest Management (IPM) Tactics - Articles Articles
The goal of using multiple tactics or "many small hammers" is to effectively suppress pests below injurious levels and avoiding outbreaks. More
Pineapple-weed (Matricaria discoidea) Photo: John D. Byrd, Mississippi State University, Bugwood.org
Pineappleweed - Articles Articles

Pineappleweed

Tim Abbey

Pineappleweed can be either a summer or winter annual. More
Photo: Charles T. Bryson, USDA Agricultural Research Service, Bugwood.org eastern poison-ivy Toxicodendron radicans
Poison-Ivy - Articles Articles

Poison-Ivy

Tim Abbey

Poison-ivy (Toxicodendron radicans) is a native woody, perennial vine. More
Photo: Robert Vidki, Doronicum Kft., Bugwood.org henbit Lamium amplexicaule
Henbit—a Common Winter Annual - Articles Articles
Henbit (Lamium amplexicaule), like many of our common weed species, grows in many areas – lawns, landscape plantings, nursery containers, and unmanaged sites. More
Landscape cloth was used to stablize this steep bank for planting to junipers. Two decades later, removing the landscape cloth is a huge chore.
Putting an End to My Landscape Fabric Nightmare - Articles Articles
Landscape fabric is often used in ornamental landscapes as a method to block weed growth permanently. More
Using Nature's Signals to Manage Landscape Pests
Using Nature's Signals to Manage Landscape Pests - Articles Articles

Using Nature's Signals to Manage Landscape Pests

Emelie Swackhamer, Gregory Hoover

The best way to make an effective pesticide application is to observe pest development at the site through regular monitoring. More
Keeping Plants Well Groomed
Keeping Plants Well Groomed - Articles Articles

Keeping Plants Well Groomed

Emelie Swackhamer, J. Robert Nuss, Larry Kuhns, Gregory Hoover

Debris that builds up in the landscape can harbor pests and plant diseases. More
Introduction to Creating Healthy Landscapes
Introduction to Creating Healthy Landscapes - Articles Articles

Introduction to Creating Healthy Landscapes

Emelie Swackhamer, J. Robert Nuss, Larry Kuhns, Gregory Hoover

When a plant looks unhealthy or has been injured by an insect or a mite, often our first impulse is to apply a pesticide. More
Table 9.3. Pesticides for Blueberries in Home Gardens
Table 9.3. Pesticides for Blueberries in Home Gardens - Articles Articles
Informational table showing pesticide recommendations for blueberries. More
Backyard Grape Growing
Backyard Grape Growing - Articles Articles
This article provides information on selecting cultivars, purchasing and planting grapes, nutritional requirements, pruning, training/trellis systems, and pests. More
Chicory
Neighborly Natural Landscaping in Residential Areas - Articles Articles

Neighborly Natural Landscaping in Residential Areas

Margaret C. Brittingham, Ph.D.

Homeowners across America are changing the face of the typical American lawn. Learn strategies for the natural landscape homeowner who is looking for neighborly ways to garden for nature. More
Photo: Karan A. Rawlins, University of Georgia, Bugwood.org
Black Medic - Articles Articles

Black Medic

Tim Abbey

Black medic (Medicago lupulina) is a spreading, low growing summer annual. More
Photo: Tim Abbey
Common Pokeweed Identification and Management - Articles Articles
Pokeweed can be a weed in landscape beds and nurseries. More
Photo: Loke T. Kok, Virginia Polytechnic Institute and State University, Bugwood.org, bull thistle, Cirsium vulgare
Bull Thistle Identification and Management - Articles Articles
Bull thistle (Cirsium vulgare) is a biennial that true to its name, has notable spines. This plant is much different than Canada thistle. 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
Weed Control in Home Fruit Plantings
Weed Control in Home Fruit Plantings - Articles Articles

Weed Control in Home Fruit Plantings

Robert Crassweller, Ph.D.

Weed control can be accomplished chemically or mechanically. Depending on the situation, each method has its advantages and disadvantages. More
Types of Herbicides for Home Fruit Plantings
Types of Herbicides for Home Fruit Plantings - Articles Articles
The effectiveness of herbicides is largely dependent upon the user. Understanding these materials will help you use them more effectively and safely. More
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