Keep Your Herbs Thriving! These 9 herbs grow better when trimmed regularly: 1. Basil Trim every 12 weeks Helps prevent flowering and boosts new growth 2. Mint Trim every 23 weeks Keeps the plant from taking over 3. Oregano Trim every 23 weeks Encourages bushier growth 4. Thyme Trim after blooming Promotes fresh shoots 5. Rosemary Trim in spring and summer Maintains shape and strength 6. Cilantro Trim every 12 weeks Extends harvest time 7. Parsley Trim once stems reach 4 inches Boosts fresh regrowth 8. Chives Cut back to the base every 2 weeks Keeps stalks tender and flavorful 9. Tarragon Trim regularly to prevent flowering Strengthens aroma and taste