Linden tree in distress.
The last two years, our Linden has been 80 % defoliated in spring and summer. The leaves that fall look like lace with just the veins and leaf edges left. Our deck was also covered with black seed like residue which we assume was excrement from the culprit. Could you tell us what insect is causing this and how we can prevent this from happening again this year. Our tree is about 40 feet tall and this causes quite a mess with raking every few days.
Certified GKH Gardening Expert
Unless you see the insect, it would be hard to say what it was. This article can help you with this problem: https://www.gardeningknowhow.com/plant-problems/pests/insects/skeletonized-plant-leaves.htm