arborists

There are jobs for professional tree-climbers (a k a arborists), and although New Yorkers raised amid concrete and brick might not make the likeliest candidates, Mr. Okoro, 25, and his group are learning how to walk on branches and shin up trunks.

NYT > Home Page By SAM DOLNICK 2010

There are jobs for professional tree-climbers (a k a arborists), and although New Yorkers raised amid concrete and brick might not make the likeliest candidates, Mr. Okoro, 25, and his group are learning how to walk on branches and shin up trunks.

NYT > Home Page By SAM DOLNICK 2010

For more information on arborists, check out the International Society of Arborists.

How to find the best tree service contractors 2010

Recreational tree climbing is now largely "technical tree climbing," or climbing with ropes, as professional arborists do.

Natural High William L. Hamilton 2011

John Clark for The Wall Street Journal Recreational tree climbing is now largely "technical tree climbing," or climbing with ropes, as professional arborists do.

Natural High William L. Hamilton 2011

The institute is run by Rob Miron and Jason Suppa, both of whom spend most of their lives up in the air, leading tree climbs and working as arborists.

Taking Tree-Hugging to New Heights Benjamin Percy 2010

The Gowanus conservancy, whose members include arborists, landscape architects and designers, wants to create a series of bioswales—ditches that would help capture runoff during heavy rains with plantings filtering the water.

Volunteers Lend Hand on Gowanus Cleanup Anne Miller 2011

Late-winter or early spring pruning is best for most trees, since it allows the tree to concentrate its stored energy on fewer branches; it's also a less busy time for tree surgeons and arborists.

Protect Your Investment: Pruning trees can prevent winter-storm damage 2010

In Morton's spirit, the Capitol's memorial trees have taken on a certain outsized significance among latter-day arborists, who have gone to great lengths to preserve the mix of magnolias, elms, maples and oaks that tell the nation's history in their own way.

Storm destroys historic tree at U.S. Capitol 2010

Finding the problem early is essential, say arborists.

How to spot the Emerald ash borer 2010