It has come to my attention the several hemlocks on private properties in Castle Park have Hemlock Wooly Adelgid. This is an infestation that if left untreated will kill the trees. Please see details and images in this link from MSU http://msue.anr.msu.edu/resources/
The Association uses West Michigan Tree Service 616 364-4558, but there are other arborists in the area. Please contact the arborist of your choice if you notice this infestation on your hemlocks, or have a professional check them out if you are unsure. This will spare your hemlocks and those of your neighbors.