Orange Tree Yellowing: Root Environment Stress

3-year-old blood orange in spring: new leaves and flowers, then sudden yellowing and drop of old and new leaves.

Root Zone Issues

• Drainage/moisture imbalance (too wet or dry). Peat-heavy soil holds water.
• Container? Check roots: light = healthy; dark brown/black = rot.
• Sudden environment change (temp, light) can cause temporary drop.
• Root-bound if in pot.

Correct drainage, pot size, and watering; plant will re-leaf when stabilized.