Gardenia Care Guide: Planting, Watering, Pruning & Troubleshooting

The gardenia (Gardenia, Rubiaceae) is a prized evergreen shrub (2m outdoors, 0.5–1m indoors) with glossy foliage and fragrant jasmine-scented blooms from May to October. Bright light, well-drained acidic soil, and high humidity are key.

Indoor vs. Outdoor Culture

Indoors (Most Common)

• Quality houseplant potting mix
• Bright indirect light—no direct sun
• High humidity: mist leaves, use pebble tray with water

Outdoors (Summer Only)

• Sheltered, partial shade
• Mix garden soil + heather soil + leaf mold/sand
• Well-drained essential
• Not frost-hardy—bring in before winter

Repotting

Every 2–3 years in late winter/early spring. Specialized gardenia potting mixes available.

Propagation

Cuttings (8–10cm) in early spring. Remove lower leaves, keep top pair. Dip in rooting hormone. Plant in peat/sand mix. High humidity (plastic cover), bright indirect light. Repot when new leaves form.

Watering Regime

• Water: Rainwater or bottled mineral water preferred
• Frequency: Keep consistently moist—water when surface dries
• Bloom period: Don't wet flowers (causes spotting/discoloration)
• Winter: Reduce—wait until substrate dries

Pruning & Maintenance

• Post-bloom: light prune, reduce crown by 1/3 for compact shape
• Deadhead faded flowers to encourage new buds
• Feed with heather/acid-loving plant fertilizer for spectacular bloom

Common Issues

• Pests: Aphids, mealybugs, spider mites—treat promptly
• Yellow leaves: Usually chlorosis from hard water (high limestone)
• Bud drop: Low humidity—mist soft water on leaves/buds

Native to tropical/subtropical Africa, Asia, Oceania. With high humidity and proper care, gardenia rewards you with abundant, fragrant blooms.

Tutorial provided by: Plombier paris 15, Plombier paris pas cher