Archive for 'Roots'

The Use of Root Barriers to Protect Infrastructure from 
Roots

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Root barriers have been around for many years. In theory a properly placed root barrier will hold back or redirect root growth. Often root barriers are used to keep roots from growing under sidewalks or other infrastructure.

There are three basic types of root barriers:1

1. root traps or screens — these consist of screens, welded fiber sheets and woven fabrics . The holes should be large enough to allow the root tip to grow through but strong enough to strangle and ...

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Root Bound Tree Struggles

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Root Bound Tree Struggles

In October I was asked to visit a property in Jacksonville to determine the cause of the declining live oak that had been planted by a nursery in March, seven months earlier. The tree was experiencing drought stress indicated by a extremely dry rootball and dieback in the crown in spite of a summer of abundant rainfall and regular irrigation.

I performed a root crown excavation with a hand hoe and soon discovered the tree had been planted too deep while ...

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How to fix the roots of pot-bound trees

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How to fix the roots of pot-bound trees

I recently had two separate requests to plant  Norfolk Island pine trees (Auracaria heterophylla) that had been left in their containers way too long. In both cases the trees had been used as Christmas trees and were then placed outdoors in their decorative pots. Although the pot-bound circling roots in these photos are extreme, the treatment would be the same for trees that are not quite as pot-bound as the tree in the following images. Unfortunately, most trees found in ...

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Tunneling Under Tree Roots

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Tunneling Under Tree Roots

Sawgrass Country Club in Ponte Vedra Beach, Florida is making improvement to 9 holes this summer and some of the improvements include better drainage. But sometimes getting the drain pipes laid out from the golf course past homes to the street presents problems for trees that are near the planned trench.  When one homeowner adjacent to the drainage project saw that her trees were going to have their roots cut by the planned drainage trench, she contacted me and we ...

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Excessive mulching causes strangulation by stem girdling roots.

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Excessive mulching causes strangulation by stem girdling roots.

During the first three months of 2013 Danny and I had been asked to excavate a number of young live oaks (Quercus virginiana) with mulch volcanoes and to fix the problems we found. We knew from previous excavation on individual trees that we would likely often find some nursery ropes, straps and wire baskets left behind that are beginning to girdle the growing trunk. We also expected to find an occasional stem girdling root. But we weren’t prepared for the ...

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