Sweetgrass (Hierochloe odorata)

Very Fragrant Medicinal Herb with Warm Sweet Aroma

Sweetgrass (Hierochloe odorata) is a very fragrant medicinal herb sought after for its pleasantly warm, sweet aroma. It forms graceful, arching clumps of fine green blades that give a soft meadow-like texture in the landscape. Despite being quite rare and often difficult to find, sweetgrass is extremely easy to grow once established. It can be planted in the ground or in containers, where it slowly expands through underground rhizomes. Over time, a single plant can spread into a thick square foot or more of grass in as little as six months under ideal conditions.

It has a very extensive root system, yet remains shallow-rooted and cooperative, growing well alongside other grasses and shrubs. Native to cool temperate regions of North America and Eurasia, it naturally occurs in moist meadows, river edges, and open grasslands. Its foliage is valued not only for its ornamental softness but also for its intensely aromatic qualities, which become even stronger as the plant dries.

Sweetgrass has a long-lasting fragrance. The scent is strongest when moistened or burned, and as it dries, the aroma intensifies further. It does not produce an open flame when burned, but instead smolders—making it ideal for smudging-style aromatic use.

Cultural & Culinary Significance
Sweetgrass holds deep cultural and ceremonial importance and was regarded as a sacred plant by many Native American peoples. It has traditionally been used in prayer, smudging, and purification ceremonies. Just as its sweet scent is attractive to people, it is also believed to attract positive energies or “good spirits.” It is often burned at the beginning of prayer or ceremony to create a sense of peace, grounding, and spiritual connection.

Beyond ceremonial use, sweetgrass has long been valued for its durability and fragrance. Dried leaves are strong and flexible, traditionally used in basket weaving and in natural beauty preparations such as creams, lotions, perfumes, and other aromatic products. Its long-lasting scent makes it especially prized for both practical and cultural applications, where it continues to bridge sensory experience with tradition and craft.

Why Grow Sweetgrass?

• Exceptionally fragrant medicinal herb with a warm, sweet aroma
• Rare and highly sought after, yet extremely easy to grow once established
• Spreads through rhizomes to form dense, meadow-like patches over time
• Adaptable to both container growing and in-ground plantings
• Valuable for fragrance, basketry, natural beauty products, and sensory gardens

Growing Tips
(Also known as: Hierochloe odorata, Holy Grass, Vanilla Grass, Zebrovka, Seneca Grass)

Sweetgrass prefers full sun to partial shade and thrives in consistently moist, well-draining soil. It performs best in rich soils with steady moisture, especially in meadow-like or lightly irrigated garden settings. It can be planted in the ground or in containers, making it flexible for both spreading beds and controlled cultivation.

It spreads through underground rhizomes and has a very extensive root system. While it can expand quickly from a single plant into a dense square foot or more within months, it remains shallow-rooted and non-aggressive, growing well alongside other grasses and shrubs. This makes it suitable for mixed plantings, naturalistic gardens, and managed meadow spaces.

Sweetgrass is very cold hardy and adapted to temperate climates, with strong seasonal growth and winter dormancy. In warmer regions, it benefits from partial shade and consistent watering to maintain vigor. Fertilizing should be light, with compost or organic matter applied occasionally.

It can be harvested once or twice a year once established. Leaves may be cut for drying when mature, especially for aromatic or craft use. The fragrance is long-lasting and intensifies as the plant dries, and becomes especially strong when moistened or gently burned, where it smolders rather than producing an open flame.

Growth is steady once established, and while rare and sometimes difficult to source, it is considered very easy to maintain in the right conditions.