Japanese Beetles

Destructive Japanese Beetles will begin emerging from the ground sometime between late June and early July. The timing changes every year. With Spring off to such a late start this year, they could even emerge a bit later as most insect issues were delayed this year.

Japanese Beetles need a certain number of days of ground temperatures being maintained at a certain point before Mother Nature lets them know it’s time to emerge. They will hatch over a period of 5-8 weeks depending upon when their eggs were laid during the previous summer. The earlier a female deposited her eggs into your lawns during the summer of 2017, the earlier they will appear in 2018. Eggs laid later in the Summer will cause those particular beetles to emerge later, however most typically show up in the first 30 days once they begin emerging.

With Japanese Beetles, you can never eliminate or avoid ‘all’ of the damage they do even if you were to spray weekly. We do not advocate spraying that often as it would be too costly. Japanese Beetles emerge from the ground as full sized, ravenous eating machines. Even if someone did spray every week some damage would still occur as these insects have to do some feeding to ingest enough insecticide to kill them. We recommend 2 to 3 spray applications to ‘limit’ or ‘manage’ the lion’s share of their damage.  Read more about Japanese Beetles…

This is a Linden tree 100% defoliated by Japanese Beetles. This is the type of severe damage 2-3 spray applications will avoid.

And these are the cute little critters who caused all that damage. Japanese Beetles attack a variety of trees and shrubs. Be on the lookout.

Summer Aphids…

A few years ago we started receiving calls from clients who had Linden trees dripping copious amounts of sap. Along with that messy, sticky sap came hundreds of bees and wasps feeding from it. Sap was all over anything under or near these trees. Since the Linden is also the Japanese Beetle’s favorite target as well as the Summer Aphids, these trees could really be under attack and weakened by these two different insects. If you notice sap drippage along with the bees and wasps, you might want to let us know before it gets too bad. We can spray to accommodate both types of insects as they require a special mixture of two different types of products.

Remember trees don’t just decide to drip sap. If sap is dripping it is definitely caused by some type of insect. Some are easy to control and some are more difficult.  Let us know if you’re having an issue!