You are doing it wrong. Here’s the right time to plant popular herbs based on zone

Zone 9: Herb Planting Advice for Hotter Climates
In Zone 9, with minimum temperatures between 20 and 30 degrees Fahrenheit, the growing season is nearly year-round. Herbs can be planted in early spring or fall, avoiding the peak summer heat. Basil, cilantro, and dill can be planted in spring and again in fall. Perennials like rosemary and lavender thrive when planted in fall, allowing them to establish during the cooler months.
Zone 10: Best Practices for Tropical and Subtropical Areas
Zone 10, where minimum temperatures range from 30 to 40 degrees Fahrenheit, allows for year-round planting. However, it’s best to avoid planting during the hottest summer months. Herbs like basil, mint, and cilantro can be planted in fall and winter. Perennials such as rosemary and thyme can be planted in fall to take advantage of the cooler, wetter winter months for establishment.
Zone 11: Year-Round Planting Tips for Equatorial Regions
Zone 11, with minimum temperatures above 40 degrees Fahrenheit, offers a unique opportunity for year-round gardening. Herbs can be planted at any time, but it’s important to consider the rainy and dry seasons. Planting during the rainy season can reduce the need for irrigation. Basil, cilantro, and mint thrive in this zone, while perennials like rosemary and sage can be planted anytime, provided they receive adequate water.

Conclusion: Maximizing Herb Growth with Proper Timing
Understanding and utilizing planting zones is crucial for successful herb gardening. By aligning planting times with your specific zone, you can ensure that your herbs receive the right conditions for optimal growth. This not only enhances the health and yield of your plants but also reduces the risk of damage from frost or heat. With careful planning and timing, you can enjoy a bountiful herb garden that provides fresh flavors and aromas throughout the growing season.