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Organizational Contacts

For questions and advice about hemlocks, the woolly adelgid and how to recognize it, treatment options, instructions for treating your trees, or other related concerns, please call the Hemlock Help Line^SM. 

Property owner associations and other organizations may also call the Hemlock Help Line to set up a group presentation, planning for your hemlock preservation project, or special training for treating your trees.
 

Treatment Products for Do-It-Yourself Option

Recommended Products -- For lightly to moderately infested hemlocks, Imidacloprid 75% WSP (sold under various brand names) is the recommended treatment.  For heavily infested or very large hemlocks, a different product Dinotefuran (sold as Safari 20 SG) is recommended.  In addition to these two primary products, there are other Consumer Products that do-it-yourselfers may consider.

Wholesale Sources (for Pros and Retailers) -- We want to encourage as many retailers as possible to carry HWA treatment products in the hope that if property wners can find them locally, they will save more hemlocks.  Therefore, to make it easier for retailers to find wholesalers that sell the appropriate products, we've developed a partial list of Insecticide Wholesalers for the Georgia market.  This alphabetical list is meant for information purposes only, not as a company endorsement.  If you know of other wholesalers that should be added to the list, please let us know.

Retail Sources (for Property Owners) -- HWA treatment products are available from many sources, including the Internet.  Below is a partial list of local retailers that carry them; this alphabetical list is meant for information purposes only, not as a company endorsement.  The GA Forestry Commission’s web site also has a list of Insecticide Vendors.  If you know of other retailers that should be added to the list, please let us know. 

How to Order -- Merit 75% WSP is Bayer's original Imidacloprid product for treating HWA.  There are also quite a few generic formulations that are chemically equivalent, equally effective, and less expensive.  When you call to order Imidacloprid, specify that you want "water soluble powder containing 75% Imidacloprid in 1.6 oz packaging for treating the hemlock woolly adelgid" and indicate the number of diameter inches you need to treat.  Then the store will be able to tell you the appropriate product and amount to buy. 

(Note: Please be aware there is a 2.25 oz. packaging of Imidacloprid 75WSP that is labeled as a termiticide.  Using it for treating HWA would constitute an improper off-label use, plus the instructions on the product label would be incorrect for treating HWA, so be sure to choose the 1.6 oz. packaging.)

Safari 20 SG is a water-soluble granule and is packaged in a 3-pound jug-style container.  It comes with a specially marked measuring cup to use for mixing the material.  When you call to order it, be sure to indicate the number of diameter inches you need to treat.

More Help -- If you will need a substantial quantity of treatment product, we suggest that you call more than one supplier to compare products and prices before making your choice.  If you need advice or have questions on the most appropriate treatment product to use for special circumstances, the quantity needed, product characteristics, etc., please call the Hemlock Help Line 706-429-8010.

Soil Injectors

If you are interested in the do-it-yourself option using soil injection to treat your hemlocks, you may either borrow a soil injector or purchase one.  Contact information is listed below.

Borrowing -- Once you have acquired the necessary treatment product, you may call one of the locations listed below for your county to request to borrow a soil injector.  In addition, quite a few neighborhood associations (not listed here) have purchased injectors for lending to residents.  There is no fee for borrowing from any of the locations listed below, but a refundable deposit is required; neighborhood associations may have their own requirements for borrowing.

Note:  As the cost of injectors may vary widely, we suggest that you call more than one supplier to compare products and prices before making your choice.

Other equipment such as back-pack or sled-style sprayers may be found at retailers such as Home Depot, Lowe's, John Deere Landscapes, Tractor Supply, or your local farm co-op or hardware store.  These names are meant for informational purposes only, not as a company endorsement.

Qualified Professionals Specializing in Hemlocks

If you want to contract with a professional to treat your hemlocks, here are the qualifications that we recommend you should look for:

n   License -- has the appropriate pesticide applicator's license (commercial and contractor's license in Ornamental and Turf Pest Control and/or Forest Pest Control) from the State of Georgia;

n   Insurance -- has at least the minimum liability insurance required by the State of Georgia;

n   Expertise -- specializes in treating hemlocks and offers application methods other than trunk injection;

n   Availability -- covers all or most of north Georgia and will travel to your property; and

n   Pricing -- provides services at reasonable rates.

Below is a partial list of local professionals who meet all of the above criteria; this alphabetical list is meant for informational purposes only, not as a company endorsement.  The GA Forestry Commission's web site also has a list of licensed Insecticide Applicators.  If you know of other professionals that should be added to the list, please let us know.  We suggest that you call more than one company to compare services and prices before making your choice.

© Save Georgia's Hemlocks 2009, 2010.  Hemlock Help Line^SM  706-429-8010.
Send comments or questions to donna@savegeorgiashemlocks.org.  Last updated 08/12/2010.