1: "Planting in poor-draining soil can cause root rot."

2: "Overwatering can lead to yellowing leaves and root rot."

3: "Improper sunlight can result in stunted growth."

4: "Avoid planting too close to other plants for proper air circulation."

5: "Prune gardenias regularly to promote new growth."

6: "Applying too much fertilizer can harm gardenias."

7: "Watch out for pests like aphids and mealybugs."

8: "Protect gardenias from harsh winter conditions."

9: "Consult with a gardening expert for specific care tips."