Common deficiency signs

  • Yellow leaves with green veins = iron deficiency.
  • Yellowing from tips inward = nitrogen deficiency.
  • Brown leaf edges = potassium deficiency or excess salts.

How to confirm

Check your watering schedule and soil pH. Nutrient lockout often happens in compacted or alkaline soil even when fertilizer is present.

Fix

Flush soil with clean water to remove excess salts, then use a balanced liquid fertilizer at half strength every two weeks.