Charlotte’s Trees 8/16/2008
I live in a neighborhood that has lots of large willow oaks. Most of the trees are mature and 36 to 40 or more inches in diameter at 48 inches of the ground. These trees are 80 to 90 feet tall and provide a wonderful canopy over the street. There are some smaller trees interspersed in voids where other trees have died, but in general the larger trees are showing the most distress.
What can be done about it? Update to trees in Charlotte
Nature has to help revive the trees but we can help by supplying water to those that are suffering. In my case I have a large willow oak in the back yard that looked pretty bad the last two years after the cankerworm attacks in the spring. We are on drought restrictions and can only water with rotary type irrigation one day a week. Drip irrigation because it is much more efficient is allowed.
I have installed a ring of drip line about 10 feet from the tree all the way around it. This line is attached to an existing drip zone that waters a shrubbery bed in the back yard. If you are not familiar with drip irrigation, this line has emitters built into it on 12 inch centers. I hold it down to the ground with landscape staples which are about six inches long and made of steel. They anchor the drip line down so after a few mowings, the line is invisible and below the mower height of 3 inches.
This tree has revived and I have now done the same to two large willow oaks in the front yard.
If this is not an option to you, then you can hand water the tree or hook up a drip line to your faucet. Battery operated timers are available that can automatically activate a drip zone.
A brief note about Fall Cankerworms
November is the time of year we get concerned in this part of the country about fall cankerworms. If you want to see what last year (2010-2011 looked like.) Click here for information on 2012 cankerworms information