Schefflera Losing Leaves in Low Light: Repotting, Salt Leaching, and Nutrient Clues

Assessment

10+ year old schefflera, moved to office 2 yrs ago (20 ft from north window). Losing leaves, some darkening before drop. 12 trunks, 3.5 ft tall. Repotted 3 yrs ago.

Likely Issues

1. Root-bound / salt buildup: Repot annually. Check for white crust on pot/soil. Leach thoroughly (heavy watering) to flush salts.
2. Nutrient deficiencies (by leaf symptom):
   • Yellow lower leaves → iron or nitrogen deficiency.
   • Dark green/bluish leaves before drop → phosphorus deficiency.
3. Low light (20 ft from north window): Reduces growth, lowers fertilizer need. Use weak, balanced water-soluble fertilizer occasionally.

Action Plan

1. Repot if root-bound; leach salts.
2. Adjust fertilizer based on leaf clues.
3. Monitor new growth.