What is the best fertilizer for these arborvites bushes, approx 8' tall, and what time of year is it applied?
Wayne County Michigan trees and shrubs
A slow release granular fertilizer with a Nitrogen value higher than the Phosphorus or Potassium value is recommended. (The values, or numbers, on a fertilizer bag always go N-P-K - Nitrogen-Phosphorus-Potassium) Check the bag for the recommended amount to apply. Garden centers also may carry fertilizers labeled specifically for evergreens which will provide the appropriate nutrients - check the bag for specifics. The best time to fertilize is in the spring prior to new growth starting.