Landscape Trees

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Updated: June 23, 2021

Tips for Choosing Trees and Shrubs

Tips for tree and shrub selection in Maryland
southern magnolia blossom
Updated: June 28, 2021

Mulching Trees and Shrubs

What purpose mulch serves and how to apply it properly.
mulch
Updated: June 14, 2021

What Causes Trees to Die?

Not all plant problems are caused by insects and diseases. Many tree and shrub problems are due to environmental issues or planting errors.
oak death from drought
Updated: June 14, 2021

Diagnose Dogwood Problems - Chart

Easy to use chart to identify problems with dogwood trees.
Updated: May 24, 2021

Seiridium and Botryosphaeria Canker of Leyland Cypress

Individual Leyland cypress branches die (flagging) is a sign of cankers or lesions from fungal diseases.
brown branch tips of leyland cypress - seiridium canker symptoms
Updated: May 24, 2021

What's Wrong with my Colorado Blue Spruce Tree?

Dr. Dave Clement, University of Maryland Extension Plant Pathologist, explains two common diseases of this popular evergreen tree. 
spruce branches dying - cytospora canker symptoms
Updated: May 24, 2021

How Do You Decide When to Remove a Tree?

Factors to consider when removing a tree.
tree decline - dead branches in canopy
Updated: May 19, 2021

Pruning Tree and Shrub Basics

The basics of pruning trees and shrubs
sycamore branching structure
Updated: May 19, 2021

Fertilizing Trees and Shrubs

Newly planted trees do not benefit from fertilizer.
Updated: May 19, 2021

Watering Trees and Shrubs

Watering tips for trees and shrubs
garden hose