Author Archive: Loose Leaf Contributor


Shipping containers: Importing insect pests, too

By Faith Campbell, Emeritus environmental advocate and tree-pest expert Several of the most damaging tree-killing insects came to America as larvae riding in crates, pallets, or other forms of wood packaging material (WPM). These include the Asian longhorned beetle (ALB), emerald ash borer, and redbay ambrosia beetle. All entered the country since trade opened with […]

Tree-killing pests: Who? Where? How?

By Faith Campbell, Emeritus environmental advocate and tree-pest expert Nearly 500 non-native insects and disease-causing pathogens have been introduced to the United States in the 400 years since European settlement began. Here are some examples: Chestnut blight has virtually eliminated mature American chestnuts across the species’ range, which is most of the eastern deciduous forest. […]

How large does the blue spruce grow?

By Robert T. Leverett, Native Tree Society How tall do blue spruces grow? Ornamental yard trees often reach 60 to 80 feet and 1.5 to three feet in diameter. Ostensibly reliable internet sources vary greatly on listed maximum heights. Some say more than 100 feet. Others cap the species off at 80, while one source […]

Honoring Maya Angelou

The world lost a great woman on Wednesday. Maya Angelou’s “When Great Trees Fall” is the final poem in her fifth collection, I Shall Not Be Moved. When Great Trees Fall Maya Angelou When great trees fall, rocks on distant hills shudder, lions hunker down in tall grasses, and even elephants lumber after safety. When […]

Video Break: Grizzly Bears

It’s break time! Take a 60-second time-out to watch these adorable grizzly bears — and learn about the threat to their food supply and how you can help.

Winter Sunrise

We just love this photograph by Charles Knowles of an inlet to Idaho’s Payette Lake at sunrise. We all have things to do and places to be, but don’t forget to stop and enjoy the winter. In the words of Robert Frost: Whose woods these are I think I know. His house is in the […]

2013′s Top 13

Today, 2013 comes to an end. Many have said that 13 is an unlucky number, but 2013 hasn’t been all unlucky. After all, it was the year of our 45 millionth Global ReLeaf tree in the ground, a comeback for Siberian tigers, the launch of our Community ReLeaf program and good news for the Kirtland’s […]

Every Leaf a Miracle

Throughout December, we’ve enjoyed looking back at the year’s International Society of Arboriculture True Professionals — arborists who go above and beyond the call of duty to bring arboriculture to the community. Rounding out the list of 2013’s True Professionals is Edward Milhous, ISA Certified Arborist and Consultant and Owner of TreesPlease in Haymarket, Va. […]

The Town Arborist

This week’s 2013 ISA True Professional of Arboriculture is Jim McCready of Carleton Place, Ontario — ISA Certified Arborist, Registered Professional Forester, Owner of McCready Tree & Forestry Consulting and Program Forester for Tree Canada   Not long after a major ice storm hammered Eastern Ontario, Canada, in 1998, government funding became available to help […]

Forestry and Philanthropy in Fargo

This week, we’re inspired by True Professional of Arboriculture Scott Liudahl — ISA Board certified master arborist and city forester in Fargo, N.D. — who is working to better his community through urban forestry. How did Scott Liudahl make the transition from assistant manager for McDonald’s Corporation near Minneapolis to a career in forestry? His […]