How to Fertilize Trees: A Simple Guide

Understanding the Root System:

Most of the tree’s absorbing roots are located under the canopy, extending beyond the drip line, not at the trunk’s base.

Assessing the Need for Fertilization:

Soil Test: Determine which nutrients your tree needs.
Observation: Look for signs of nutrient deficiency like discolored leaves or slow growth.

Choosing the Right Fertilizer:

Type: Use a slow-release, granular fertilizer.
Formula: Opt for a balanced N-P-K ratio unless otherwise suggested by soil tests.

Applying Fertilizer:

Where: Apply fertilizer under the tree’s canopy, extending just beyond the drip line.

How:

Broadcast Method: Spread fertilizer evenly over the root zone.
Fertilizer Wells: Create shallow wells around the drip line for deeper penetration.
Watering: Water the area thoroughly after fertilizing, but avoid letting water pool around the trunk.

Additional Tips:

Avoid watering the tree trunk directly.
Ensure good soil drainage to prevent root rot.
Water more frequently in hot weather, but avoid overwatering.

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