Hibiscus plant won’t bloom
Hard freeze last year and they both suffered from the freeze but recovered quite nicely. What would make the one plant stop blooming? They're fertilized every 2 weeks.
Certified GKH Gardening Expert
To much fertilizer is likely cause.
To much Nitrogen will cause lush green plants and no blossoms.
You can add Phosphorous with Bone Meal fertilizer.
Here are a few links for you with more information.