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

Zone 5: Optimal Planting Times for Transitional Climates
In Zone 5, with minimum temperatures ranging from -20 to -10 degrees Fahrenheit, the growing season is more forgiving. Most herbs can be planted directly outdoors after the last frost. Basil, cilantro, and dill thrive when planted in late spring, while perennial herbs like rosemary and lavender can be started indoors and transplanted outside once the soil warms.
Zone 6: Herb Planting Strategies for Mild Winters
Zone 6 offers a longer growing season with minimum temperatures between -10 and 0 degrees Fahrenheit. This allows for a wider range of planting options. Herbs like basil, parsley, and chives can be planted directly in the garden in mid-spring. Perennials such as rosemary and thyme can be planted in early spring to establish themselves before the heat of summer.
Zone 7: Planting Tips for Moderate Climates
Zone 7, with minimum temperatures from 0 to 10 degrees Fahrenheit, provides an excellent environment for most herbs. The growing season is long enough to accommodate multiple plantings. Basil, cilantro, and dill can be planted in early spring and again in late summer for a fall harvest. Perennials like lavender and sage thrive when planted in spring, allowing them to establish before winter.
Zone 8: Ideal Planting Periods for Warm Regions
Zone 8, where minimum temperatures range from 10 to 20 degrees Fahrenheit, offers a long growing season ideal for a wide variety of herbs. Most herbs can be planted in early spring, with a second planting in late summer for fall harvest. Basil, mint, and parsley do particularly well in this zone. Perennials like rosemary and thyme can be planted almost year-round, except during the hottest summer months.