The United States is the world’s leading producer and consumer of forest products and accounts for about one-fourth of the world’s production and consumption. The United States is also the world’s largest producer of softwood and hardwood lumber. iGrow is designed to keep foresters up to date on all of the latest information and regulations, including the ability to complete continuing education requirements.
Trees & Shrubs
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Kentucky Coffeetree
Kentucky Coffeetree (Gymnocladus dioicus) is a medium-sized tree that will fit into many landscapes and provide interest all year with its bark, leaves, flowers, fruit and even great fall color, if weather conditions are right.
Fire Blight
Fire blight is a disease that can infect apples, pears, and certain ornamental species including crabapples, cotoneaster, and mountain ash. Occasionally it may also appear on cherries, plums, Juneberry (also called Serviceberry or Saskatoon), and raspberry. This disease, caused by the bacteria Erwinia amylovora, can damage blossoms, fruit, leaves, shoots, and branches. If it is not controlled, fire blight may kill the entire tree or shrub. Infected tissue cannot be cured, but will need to be removed from the tree to prevent further spread.
How to Identify an Ash Tree Infested by Emerald Ash Borer
The emerald ash borer (Agrilus planipennis) is a threat to all the ash trees in our state. None of our native ash have any resistance to this insect and once attacked, unless insecticides treatments are started within a year or two, the tree will die. The emerald ash borer has been responsible for the loss of more than 60 million ash trees in the United States and Canada since its accidental introduction from Asia into Michigan during the 1990s.