You may defend your ash timber from emerald ash borer with the best remedy plan

We’ve been on a two-year remedy schedule to guard our ash timber from emerald ash borer and have been lucky to maintain practically all of the timber rising and wholesome. Not too long ago we heard that it was doable to increase to a three-year remedy schedule and was questioning if this may be OK for our ash timber to save lots of on prices?

— Sam Goldstein, Libertyville

Your contractor is probably utilizing a trunk injection of TREE-äge™ (emamectin benzoate) to deal with your ash timber for management of emerald ash borer. You’ll lose your ash timber to this insect with out these common therapies. That is an insect pest that requires common insecticide purposes for management. Latest research have proven you could prolong to a three-year remedy schedule though the label recommends two. This may cut back your prices whereas adequately defending your timber.

There are some issues to think about earlier than making the change. There will not be many ash timber left within the Chicago space panorama, so there may be most likely low emerald ash borer exercise within the neighborhood of your backyard. If there was excessive stress from emerald ash borer domestically, it could be safer to stick with a two-year remedy schedule. If any of your remaining ash timber are of significantly excessive worth to you or are beneath stress from different elements akin to drought, maintaining the two-year remedy plan is a good suggestion. Since you’ve been treating your timber regularly for a number of years, the transition to a three-year remedy plan ought to be OK for you. It’s greatest to begin a brand new remedy program for an ash tree with a two-year remedy plan earlier than transitioning to a three-year program.

For extra plant recommendation, contact the Plant Info Service on the Chicago Botanic Backyard at [email protected]. Tim Johnson is senior director of horticulture on the Chicago Botanic Backyard.