Hibiscus in Florida Not Blooming: Wrong Fertilizer Ratio

A hibiscus in Floral City, FL (Zone 9a) getting Miracle-Gro 24-8-16 (high nitrogen, low phosphorus) will produce leaves, not flowers. The middle number (phosphorus) drives blooming.

Switch Fertilizer

• Use bone meal or triple superphosphate (0-46-0)—pure phosphorus sources.
• Apply in early spring and again after first flush.
• Stop high-nitrogen feeds entirely.

Other Factors

• Full sun (afternoon is fine).
• Consistent moisture.
• Identify the cultivar—some are shy bloomers.

Phosphorus is the flower vitamin. Give it what it craves.