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.
