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When trees look like telephone poles, they are either planted too deeply or mulched too deeply. Either way, it is not good for the tree! Photo: Sandy Feather, Penn State
Mulch Volcanoes Are Erupting Everywhere! - News News
Extension educators, arborists, and other knowledgeable horticulturists have railed against the prevalence of mulch volcanoes for decades. So why do we still see so much mulch piled around the trunks of trees? More
Overall picture of white oak impacted by cynipid wasp galls. Photo: Sandy Feather, Penn State
Cynipid Wasp Galls: Making A Mess of White Oaks - News News
The Extension office received a sample of damaged white oak leaves from the North Hills of Pittsburgh. Given the amount of rain we have had all year, anthracnose was a possible suspect. More
Plant infested with boxwood leaminer. Photo: Sandy Feather, Penn State
It’s Spring, and Soon the Boxwoods Will Sing - News News
Many years ago, a homeowner called our office with a question about why her boxwoods were making noise. More
Invasive Forest Plants of the Mid-Atlantic
Invasive Forest Plants of the Mid-Atlantic - Guides and Publications Guides and Publications

Invasive Forest Plants of the Mid-Atlantic

Allyson Brownlee Muth, Ed.D., Sky Templeton

72

$10.00
Identify invasive grasses, herbs, shrubs, trees, and vines often found in your Pennsylvania forests and woodlots. More
Biodiesel Safety and Best Management Practices
Biodiesel Safety and Best Management Practices - Guides and Publications Guides and Publications

Biodiesel Safety and Best Management Practices

Gregory W. Roth, Ph.D., Craig Altemose, Dennis Elvin Buffington, Ph.D., Glen Cauffman

40

$8.00
Examine the processing and safety issues associated with making biodiesel fuel for small-scale noncommercial use and production. More
Energy Selector
Energy Selector - Guides and Publications Guides and Publications

Energy Selector

Dennis Elvin Buffington, Ph.D.

$1.30
This unique slide-type piece allows you to make an "apples-to-apples" comparison of various heating fuels on the basis of cost per BTU. Values provided include #2 fuel oil, propane, natural gas, electricity, coal, corn, wood pellets, and firewood. Note: This piece is only available in hard copy due to its two-part design consisting of a sleeve and an insert. More