Hi Lizanne, I'm not sure what you're seeing on the leaves of the.

The tree appears healthy, although droopy from the weight of the clusters. It is a large tree but getting quite bare from all the lost leaves. Where green leaf clusters are concerned, it's probably Estimated Reading Time: 3 mins. May 31, This leaf drop is caused by the feeding of maple petiole borers, Caulocampus acericaulis. Petiole borers are small insects called sawflies, which are non-stinging wasps. The sawfly is only about 1/6 of an inch long and emerges from the soil in the spring to mate and lay eggs near the base of the petiole of maple treedelimbing.barted Reading Time: 2 mins.

Jun 01, Maple dropping leaf clusters. I have a maple in my yard, and all of a sudden 3 days ago it started dropping otherwise healthy looking bunches of leaves. It’s not individual leaves, but clusters all about the same size and with remnants of seed pods attached. Again, this was all of a sudden out of nowhere, and the leaves all look pretty healthy. May 11, I have a mature sugar maple in my back yard that has been dropping green leaves for the past several weeks.

It isn't losing so many that the crown is starting woodman tree removal thin, but the ground underneath is spotted with many leaves. It has a dense crown, and I wonder if it could be that the interior leaves aren't getting enough sun, so they shed themselves. Apr 12, Why is my maple tree losing lots of leaves now? You said the leaves were still green when they fall, but the stems looked darkened.

There could be several reasons for leaf drop.