Jul 31, Arborvitae Diseases. Informational table showing disease name, symptoms, pathogen/cause, and management of Arborvitae diseases. The oldest branchlets turn brown in autumn and fall off. Normal browning. Branchlets rather than scale leaves are shed in autumn as a normal part of the plant development. Tips of one-year-old branches die and turn Estimated Reading Time: 2 mins.
Aug 27, I have a row of arborvitaes that all have the same area dying or dead along the ground and the same side on each of them.
I believe it Estimated Reading Time: 3 mins. If you want to get rid of your arborvitae, cut all the stems to the ground. Otherwise, you should prune branches back to about 1/2-inch above the larger stems from where they grow.
References. Oct 18, Q: I have a row of 12 'Emerald Green' arborvitae planted along the perimeter of my property. This is the third year for them.
Up until now, they were doing very well. This year they all put on 6 Estimated Reading Time: 4 mins.