Established 10 ft tall arborvitae showing signs if losing leaves from bottom/ moving up. What to stop this/ need fertilizer or insect treatment ? Professional landscaper spray green product on lower plant/ what is this & where can average person purchase this
Certified GKH Gardening Expert
It sounds like a possible fungal issue. There are many natural ways to get rid of this. I have a method that I like to use that is safe, natural, and effective. Try to have as many of the ingredients as possible, as it is very effective when all combined. The recipe is as follows:
First, you will want to prime the soil with dolomitic lime, then spread wettable sulfur to Kill off any infection in the soil. I Also like to spray the plant itself. Mix a few drops of one or more of these ingredients into warm water with a spoonful of coconut oil: Rosemary oil, lavender oil, neem oil, garlic oil, cinnamon extract/oil and for really bad cases, also add clove oil.