Check trees for storm safety

LSU AgCenter News
June 08, 2011 at 1:33 pm  | Mobile Reader | Pring this storyPrint 

By Dan Gill
LSU AgCenter Horticulturist

Violent thunderstorms can occur around the state during the summer and in south Louisiana high winds from hurricanes are a real concern. That means it is an excellent time to take a look at trees in your landscape. Trees with problems can be a liability during storms.

First, check for trees that have large, dead branches or are totally dead. Have dead branches pruned off and remove dead trees entirely.

Look at the overall condition of your trees. A tree that is sickly and low in vigor and shows significant signs of rotten or decayed areas in the trunk may need to be removed if it poses a threat to buildings. Large cavities with extensive decay in trunks reduce a tree’s ability to withstand strong winds.

After the extreme rain associated with hurricanes or storms, the soil may be so soft that trees topple over if the weight is not properly proportioned. Trees that are very one-sided or leaning significantly may need attention. Selective pruning can relieve the weight on the heavier side and balance out the weight distribution of the canopy.

Also look for branches that hang over the house near the roof. Although the branches may not be touching the roof under normal conditions, the high winds of violent storms or hurricanes can cause trees to bend and branches to flail around considerably.

Normally, it is best to have this kind of work done by a professional, licensed arborist. The areas in which arborists can help you include planting, transplanting, pruning, fertilizing, pest management (such as spraying for caterpillars or treating for termites), tree removal, value appraisals and protecting trees during construction. Selecting the right arborist to do the work is an important decision.

Tips for Selecting an Arborist

•Check in the Yellow Pages under “Trees” for local companies that do tree care work. Having an ad in the phone book indicates the company has some degree of permanence.

•Beware of door-knockers. This is especially common after storms when nonprofessionals see a chance to earn some quick money.

•Never let yourself be rushed by bargains such as “If you sign an agreement today, I can take 10 percent off the price.”

•Ask to see their state arborist license. All practicing arborists in Louisiana must be licensed by the Louisiana Department of Agriculture and Forestry.

•Ask to see certificates of insurance, including proof of liability for personal and property damage and worker compensation. Then phone the insurance company to make certain the policy is current.

•Ask for local references, and look at other jobs the company has done. Check with the Better Business Bureau.

•Have more than one arborist look at the job and give you estimates to ensure you get a fair price. This also allows you to get other opinions on what work needs to be done. Don’t expect one arborist to lower his bid to match another arborist’s estimate.

•A good arborist will never recommend – or agree to – topping a tree except under rare circumstances (such as to save the tree after severe physical damage to the crown).

•Unless you simply need a tree removed, choose a company that offers a wide range of services (such as pruning, fertilizing, cabling/bracing, pest control, etc.).

•Do not allow an arborist to use climbing spikes to climb a tree unless the tree is being removed.

To make sure the work is performed to the standards you expect, get a written contract. It should include the dates of when the work will start and finish, exactly what work will be done, what and when cleanup work will be done and the total dollar amount you will be charged. If a tree is to be removed and the stump ground down, make sure the company agrees to remove all of the wood chips.

You should be present while the work is being done, even if you have to take off from work. That is the best way to avoid surprises after the work is finished. And don’t be shy about asking questions. You need to fully understand what the arborist proposes to do and why.

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