6 arborvitaes were planted toward the end of last summer to replace a hemlock hedge that died and had worms on branches that looked like small cones. I watered well, and we had a wet winter. Now the arborvitaes are the color of green olives for the most part. Some inside branches are emerald green. What could be causing this? We lost some branches to brown earlier in winter. Should I fertilize with Bayers systemic fertilizer?
