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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Earth Day is Your Day - News News

Earth Day is Your Day


Please join Penn State Master Gardeners in Lackawanna County on April 13th for a celebration of Earth Day. More
Photo credit: Chris Events, University of Illinois, Bugwood.org
Controlling Japanese Stiltgrass in Your Garden - Articles Articles
More and more gardeners are finding that Japanese stiltgrass is overtaking their landscape beds and lawns. This article explains what it is, why it is increasing so fast, and how to control its spread. More
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
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
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
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
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
Fruit Production for the Home Gardener
Fruit Production for the Home Gardener - Guides and Publications Guides and Publications

Fruit Production for the Home Gardener

Robert Crassweller, Ph.D.


Grow your own fruit on a small scale. More
Photo: Tim Abbey
Common Pokeweed Identification and Management - Articles Articles
Pokeweed can be a weed in landscape beds and nurseries. 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
Grapes in the Home Fruit Planting
Grapes in the Home Fruit Planting - Articles Articles
American varieties such as Concord and Niagara thrive in most places in Pennsylvania that meet the criteria outlined in Penn State Extension cultural recommendations. More
Mulches for Weed Control in Home Fruit Plantings
Mulches for Weed Control in Home Fruit Plantings - Articles Articles
A mulch is any kind of material applied to the soil surface for protection or improvement of the area covered. The value of any mulch material is measured in how well it improves crop quality. 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
Applying Mulches in Home Fruit Plantings
Applying Mulches in Home Fruit Plantings - Articles Articles
Since most mulch materials are applied for weed control, it is important that they be in place before weeds have emerged from the soil. More
Types of Weeds
Types of Weeds - Articles Articles
To adequately control weeds in the small-scale orchard, you should learn proper weed identification. 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
Home Orchard Calendar
Home Orchard Calendar - Articles Articles
Calendar applies to Zone 6, in the Mid-Atlantic Region. Apple bloom generally the last week of April. Adjust timings for other regions. More
Pineapple-weed (Matricaria discoidea) Photo: John D. Byrd, Mississippi State University, Bugwood.org
Pineappleweed - Articles Articles


Tim Abbey

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


Tim Abbey

Poison-ivy (Toxicodendron radicans) is a native woody, perennial vine. 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
Images 1. Common ragweed. DiTomaso, J. UC-Davis, Bugwood.org.
Keep an Eye Out for the Ragweeds - Articles Articles

Keep an Eye Out for the Ragweeds

Dwight Lingenfelter, William S. Curran, Ph.D.

Members of the Aster family, particularly the ragweeds, are never good neighbors and it’s key to understand what your post treatment options are. 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
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
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