Herbs are a garden staple to provide color and utility along garden borders, rock gardens and stone walls. The delicious flavor of United States grown herbs are used in recipes, teas and potpourri. Some herbs are short-lived annuals that only grow through one season, while other herbs are perennials and sprout back each year. There are also evergreen herbs that remain with color all season long, including winter. With their striking foliage and unusual texture, herbs add aromatic elegance to the garden.
This evergreen herb has gray-green to dark green foliage that’s highly aromatic. Rosemary has a rounded shape with spreading branches that remain their vibrant color all year long. Beginning in the winter, rosemary produces dark to pale blue flowers that contrast with the green needles. Rosemary grows up to 4 feet high and wide, making this Unites States grown herb ideal along a perennial bed or lining a garden walkway. Rosemary requires sun to light shade and well-drained soil to thrive. It is also deer resistant and can be severely pruned, making this evergreen herb a gardening must. The USDA hardiness zone is 7 to 10.
Thyme is a perennial herb that grows back each year fuller and healthier. This low-growing herb grows up to 6 inches tall, making it ideal for containers and along rock gardens where it hugs the rocks and surrounding ground. This creeping herb spreads up to 3 feet wide and looks striking as it cascades down stonewalls or along flagstone pavers. Its draping foliage is mound like in form and requires full sun to thrive. Thyme has pinks flowers that emerge in early spring to light up the landscape. It also attracts bumblebees and butterflies and prefers well-drained, neutral soil to thrive. A favorite in many herb gardens, thyme is also used in soups and stews because of its pungent flavor. The USDA hardiness zone is 4 to 9.
This aromatic perennial herb grows in clumps up to 3 feet high and wide. The gray-green leaves are soft and oval in shape. Sage grows on woody stems that produce purple flower spikes beginning in the summer. This highly scented herb prefers full sun and moist, well-drained soils to thrive. It tolerates alkaline soils but does not do well in wet winter climates. Sage is also known to be deer and drought tolerant, making this perennial a tough and hardy herb. The billowing shape of sage looks classic nestled within flower containers. When dried sage creates a strong flavor to add to recipes. The USDA hardiness zone is 5 to 8.