1: Avoiding proper sunlight can hinder Gardenia growth. Ensure to place plants in bright, indirect light for optimal health.

2: Overwatering can lead to root rot and ultimately kill Gardenia plants. Water only when the top inch of soil is dry.

3: Neglecting proper drainage can also cause root rot in Gardenias. Ensure pots have drainage holes to prevent water accumulation.

4: Using tap water with high chlorine levels can harm Gardenias. Use filtered or rainwater for healthier plants.

5: Failing to prune Gardenias properly can result in leggy, unkempt plants. Trim after flowering to maintain a compact, bushy shape.

6: Forgetting to fertilize Gardenias can lead to poor blooming. Use a balanced fertilizer formulated for acid-loving plants.

7: Using too much fertilizer can burn Gardenia roots. Apply a diluted solution every 4-6 weeks during the growing season.

8: Neglecting pests like aphids and whiteflies can weaken Gardenias. Keep an eye out for infestations and treat promptly.

9: Ignoring signs of disease like powdery mildew can spread to other Gardenias. Treat with a fungicide to prevent further damage.