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Planted Too Deeply - Trees and Shrubs

A tree planted too deeply looks like a telephone pole coming out of the ground Many trees and shrubs are set too deeply from the time of planting (planting holes should be wider than deeper), they can also settle too deeply into the ground over time or are overmulched . These situations can...

Groundcover List

This list offers some suggestions for groundcovers for different sites, however, there are many more options. Plants need to be able to grow on challenging sites, especially when used for slope or bank stabilization and as a grass substitute, are easy-to-grow, and relatively fast growing. Invasive...

Cherry Shot Hole on Flowering Cherries

Yoshino cherry blossoms Flowering cherries are among the most popular ornamental trees grown in Maryland. When in bloom we know that springtime is here and we marvel at their beauty. Then later in the season the problems start..... Sometimes during the growing season cherry trees (these diseases...

Climate Change Basics and Evidence

How Do Scientists Know That Climate Is Changing? Many different kinds of evidence consistently point to a warming trend on Earth. The graphic below illustrates some of the indicators measured across the globe over many decades that show that the Earth’s climate is warming (white arrows indicate...

Climate Change and Gardening

Back to Learn Climate change is real and is affecting Maryland now. There is no scientific controversy: 99% of scientists agree that our climate is changing and that global temperatures are increasing as levels of heat-trapping greenhouse gases rise in the atmosphere (CO 2 , methane, nitrogen...

Resource Links

Earth Friendly Plants/Mushrooms Problems Wildlife General Interest Links to private companies or products are provided as a public service and do not constitute an endorsement by the University of Maryland. Earth Friendly Biological and Alternative Control & Intergrated Pest Management (IPM)...

Care of Amaryllis (a.k.a Hippeastrum) Plants

This beautiful plant is an all time favorite holiday se ason plant that can be encouraged to bloom at other times of the year too. The bloom is a spectacular flower six inches across with two to four blossoms produced on tall sturdy stems. Each flower can last two weeks, sometimes longer. Bloom...

Common Lespedeza or Japanese Clover

(More lawn weeds) (Control Options) ( General Weed Gallery) Common Lespedeza or Japanese clover ( Lespedeza striata ) Photo: Rebekah D. Wallace, University of Georgia, Bugwood.org General Description Common lespedeza, also known as Japanese clover, ( Kummerowia striata , syn. Lespedeza striata ) is...

Paulownia (Empress or Princess Tree)*

(More lawn weeds) (Control Options) ( General Weed Gallery) Paulownia tomentosa Blooming Paulownia Photo: James H. Miller, USDA Forest Service, Bugwood.org Life Cycle: deciduous tree Growth habit: small to medium tree that reaches a height of 30-60 ft. Produces clusters of light purple, fragrant...

Mile a Minute Vine*

(More lawn weeds) (Control Options) ( General Weed Gallery) Mile a Minute Vine* or Devil's tear thumb Polygonum perfoliata Life Cycle: Summer annual herbaceous vine that can climb over vegetation, smothering plants forming dense mats; invasive Growth habit: Thrives in full sun but can tolerate...

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