Step 1: Understanding the Concept:
Pradhan Mantri Fasal Bima Yojana (PMFBY) fixes subsidized, uniform actuarial premium rates payable by farmers.
Step 2: Detailed Explanation:
The uniform maximum premium rates payable by farmers under PMFBY are:
1. Kharif Food and Oilseed Crops: $2.0\%$
2. Rabi Food and Oilseed Crops: $1.5\%$
3. Annual Commercial and Annual Horticultural Crops: $5.0\%$
The balance actuarial premium is shared equally between the Central and State Governments.
Step 3: Final Answer:
Therefore, the premium rate for horticultural crops is 5%.