Adding new plants to your garden each year can take a toll, both on your back and your budget. Perennial herbs offer a practical and rewarding alternative. These versatile plants provide lasting beauty in the landscape while serving a delicious purpose in the kitchen, saving both time and money over the long term.
Perennial herbs are easily incorporated into existing flower beds and landscapes, offering a rich blend of fragrance, texture and color. Unlike annuals, they return year after year after winter dieback, making them a reliable and low-maintenance addition. Some grow as small woody shrubs, while others remain herbaceous. Grown throughout Illinois, many hardy perennial herbs thrive with minimal care.
Chives form tidy, 12-inch clumps of grass-like foliage. Their purple-pink blooms are both ornamental and edible. Leaves can be harvested throughout the growing season, though young growth offers the most delicate flavor.
Lemon balm has heart-shaped leaves with a bright lemon scent, and grows to about 18 inches tall. To keep it from spreading too freely, remove spent flower stalks before they set seed.
Oregano reaches up to two feet tall, with branching stems and small, aromatic leaves. In summer, it produces clusters of tiny pink flowers that attract pollinators.
Sage is a small, woody shrub with unique gray-green foliage. It prefers well-drained soil, as excess moisture can lead to root rot.
Thyme forms a low, spreading mound 6 to 12 inches tall. Its tiny, fragrant leaves serve as a backdrop for light pink tubular blooms in early summer.
Additional perennial herbs worth considering include lovage, lavender, salad burnet, French tarragon, winter savory and mint. When growing mint, however, use caution. It can quickly spread and overtake garden beds. Planting it in a container is the best way to keep it under control.
Some popular herbs are classified as “tender perennials,” meaning they are not winter hardy in colder climates. This group includes rosemary, lemon verbena, lemongrass and scented geraniums. In Illinois, these plants can be grown year-round by moving them indoors before the first frost.
To encourage vigorous growth and the best flavor, replicate the native conditions of many herbs which originate in the Mediterranean region. These plants prefer warm temperatures, well-drained soil and relatively dry conditions, making them naturally drought-tolerant once established. They also tend to have few pest or disease issues, adding to their low-maintenance appeal.
While some herbs tolerate partial shade, most perform best and develop their strongest flavor when they receive six to eight hours of direct sunlight each day.
With their blend of resilience, beauty and culinary value, perennial herbs are a smart investment for any garden, offering rewards that return season after season.
