Self-Treating Your Ash Trees: Size Matters


Arborists in Sioux Falls are swamped with phone calls ever since emerald ash borer was detected in the northern part of the city. 

You can treat ash trees yourself with an over the counter product, but there are a couple of things you need to consider first.  

It’s estimated 40-percent of the trees in Sioux Falls are ash trees and they’re all susceptible to the Emerald Ash Borer.  

People who fear the worst are afraid the landscape will change dramatically. 

“It takes a lot of beauty out of the surroundings it’s nice to see green trees,”  Wanda Willemssen said. 

If you want to save your trees, you can hire an arborist to inject them with a pesticide. Or you can buy an over the counter product.

“The thing with this is you can do it yourself and it is very easy to do,” lawn and garden expert, Rick Swanson at ACE Hardware said. 

Rick Swanson of ACE Hardware says if you choose to do it yourself, use Bayer Advanced Tree and Shrub Protect and Feed Granule . He says it has been tested at several universities and shows it’s effective when using the drench method.  

“You do not apply it to the tree you really don’t even pour it on the trunk of the tree you just pour it right at the base of the tree,” Swanson said. 

But tree experts say when it comes to self treating ash trees, size matters. 

“I only recommend it for small diameter trees the ones you can almost put your hands around the reason is because the chemical in that is not concentrated enough to affect larger trees so we generally say if it’s this small you can go out and try to treat it yourself if it’s larger than that, you’re going to have to go out and hire a commercial company,” Ball said. 

Remember to catch our emerald ash borer special Thursday on KELOLAND TV starting at 6:30 p.m. CT as we ask the experts your questions about ash trees and how to stop the spread of emerald ash borer.

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