Worms eating my deadora cedar
We notice two insect pests on the tree. Both insects can attack stressed trees.
Left handside of photo looks like a bagworm (looks like a pinecone). They are defoliators of evergreens and sometimes deciduous trees. Handpick and dispose of in soapy water. Do not throw them on the ground near the trees but destroy them and throw them in the trash. This must be done before the eggs hatch in June. Here is more on bagworms https://extension.umd.edu/hgic/topics/bagworms-trees-and-shrubs
The larvae looks like the redheaded pine sawfly. Adults are sawflies and the larvae resemble caterpillars. They usually feed in groups. Put on gloves, handpick, and drop into soapy water. Here are photos and more information https://extension.umd.edu/hgic/topics/redheaded-pine-sawfly-shrubs