Pro Arbor Revived Declining Trees for Trump National Golf Club

October 19, 2010

I am writing to inform you of a recent success with one of our best clients, The Trump Organization. Pro Arbor was contacted by the Trump National Golf Club because of the declining health of six Red Sunset Maples flanking the entrance of the clubhouse. The trees had been hand-picked by Mr. Trump, and there was great concern that if any of them failed it would be extremely difficult to match specimens and preserve the symmetry of the landscape.

The trees presented badly. Half of them were changing color and dropping leaves in early July. There was no noticeable node for this year’s growth. They were irrigated regularly, both by a spray head system and with drip bags.

Pro Arbor’s arborists removed the drip bags to expose the root flare of the trees. Although the trees had been installed at the proper depth, there was a mass of adventitious roots around the collar of each of them. Upon further excavation, it was determined that some of the deeper areas in the root zone were anaerobic and causing root death.

The soil was remediated using 18 inch deep Rootwells and a highly aerated brew of compost tea. Due to concern that many of the deeper fibrous roots had died, the adventitious roots were not pruned completely. That will be done later, after more deep roots have been established.

All six of the trees have survived, and we expect a robust growth in the spring. I would attribute this success mostly to the Rootwell devices. It is clear that the problem with these trees was in the anaerobic conditions created by the drip bags and the poorly structured soil. The root aeration tubes allowed us to correct the problem.

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