The Best Herbs to Grow in the South: What Thrives in Heat and Humidity

Herbs That Actually Work in Southern Heat

Most herb guides are written for cooler climates. They tell you to grow basil and hope for the best, without warning you that July in the South can cook it into oblivion. This guide covers the herbs that genuinely thrive in southern heat and humidity, from the Gulf Coast to the Carolinas, so you stop wasting money on plants that burn out by August.

Basil: Pick the Right Type and It Will Reward You

Standard sweet basil is productive in spring but struggles in extreme summer heat. Thai basil is much more heat-tolerant and keeps going through the worst of the summer. Spice Globe basil handles heat well too. Plant basil after the last frost, pinch flowers constantly to keep it from bolting, and you will have plenty for the kitchen through June. In the deep South, try a second planting in late August for a fall harvest.

Lemongrass: A Southern Staple

Lemongrass is one of the most productive and low-maintenance herbs you can grow in the South. It loves heat, tolerates drought once established, and comes back every year in zones 9 and warmer. A single clump will grow to three or four feet wide within a season. Use it in teas, curries, and soups. Cut stalks back in late fall to keep plants tidy.

Rosemary: Built for the South

Rosemary is one of the few Mediterranean herbs that actually prefers southern conditions. Full sun, well-drained soil, and warm winters suit it perfectly. Once established, a rosemary bush can live for ten or more years with almost no care. Prostrate varieties work well as ground covers on slopes. Avoid overwatering since rosemary rots quickly in wet feet situations.

Turmeric and Ginger: Tropical Powerhouses

Turmeric and ginger are some of the most rewarding plants for southern gardeners. They thrive in the warm, humid summers the South is known for. Plant rhizomes in spring after soil warms, give them partial shade and rich soil, and by fall you will have a generous harvest. Both are perennial in zones 8b and warmer, dying back in winter and returning each spring.

Moringa: The Most Productive Herb in a Southern Garden

Moringa is technically a tree but most southern gardeners use it like an herb, harvesting young leaves continuously through the growing season. It grows extremely fast in heat, can be cut back repeatedly, and the leaves are packed with nutrition. In zones 9 and warmer it is perennial. In cooler zones it grows as an annual. If you have never tried moringa, plant it this season.

Catnip, Lemon Balm, and Mints

Members of the mint family generally do well in the South. Lemon balm handles heat and humidity better than peppermint. Catnip is incredibly vigorous in southern gardens. Regular peppermint and spearmint do best in partial shade with consistent moisture. All mints spread aggressively, so plant them in containers or give them a dedicated bed where spreading is welcome.

Chives and Garlic Chives

Both common chives and garlic chives perform well through the fall and spring in the South. They die back in the heat of summer but return reliably. Garlic chives are particularly tough and produce attractive white flowers in late summer that attract pollinators. Both are essentially perennial in most southern zones.

Build Your Southern Herb Garden Right

If you want a complete guide to plants that thrive in southern zones, including herbs, vegetables, and perennials specific to Florida and the Gulf Coast, our book The Florida Herb Garden: 25 Herbs That Thrive From Zone 8b to 11 covers the best varieties, planting times, and care tips for every herb that truly performs in this climate.