When to fertilize trees and shrubs

Ideally, growing trees should be fertilized throughout the year but a bit differently as trees age.

Tree fertilizer spikes

A tree needs larger amounts of nitrogen (N) based fertilizer during the growing season. Nitrogen-based solutions should be applied during the early spring and summer months.

Several light applications a year are preferred as the tree gets older to a point where they need very little fertilizer.

A soil test may be needed to determine the amounts of phosphorus (P), potassium (K). Read the label for proper ratios and application rates of N, P, and K for trees.

How to fertilize large trees

What is the best fertilizer for trees

Best fertilizer for trees in fall

Best time to fertilize trees in the fall

Should you fertilize trees in the fall

Important Age Considerations

Here is how you should fertilize a tree as it ages:

• Newly planted tree phase - these trees are still babies and should have only minimal applications of a quick release fertilizer and more of a type that releases slowly.

  High nitrogen release rates on newly planted trees will burn roots and leaves on contact. Note: Liquid and fully composted fertilizers have the fastest release rates while slow release forms tend to be granular and less water soluble

  how often should you fertilize trees
  when do you fertilize trees and shrubs