You may be surprised to learn that most established landscapes and mature trees do not need additional fertilization. Cherokee Tree Care advises fertilizing the first 4–5 years after planting and monitoring the new growth year to year.
We recommend one application per year, either in early spring or late fall. This tree & shrub fertilizer application is 80% slow release, providing adequate nutrients for your plants throughout most of the growing season.
In natural forests, trees thrive without the addition of fertilizer because the soils are rich with organic matter from decaying limb litter and debris.
In residential landscapes, trees are forced to compete with turfgrass and other plants. We also frequently remove fallen leaves and organic matter that add fertility to the soil.
Adding a mulch ring around your trees is a great way to help mimic the forest setting.