Troubleshooting a Declining Gardenia

Gardenia issues usually stem from pH, water, light, or temperature—not a single factor.

Key Requirements

• pH 5.0–5.5 (acidic).
• 6+ hours direct sun.
• Consistent moisture: never bone dry, never soggy.
• Hardy to ~20°F; protect in colder zones.

Symptom Guide

• Drooping entire plant = overwatering / root rot.
• Yellow new growth = overwatering / high pH (iron chlorosis).
• Yellow interior leaves dropping = underwatering.
• Bud drop = temperature fluctuation, low humidity, or dry soil.

Action

Check soil moisture at root ball (knuckle deep). Adjust watering. Test pH. Apply chelated iron if chlorotic. Move to brighter location if indoors.