Briza media (Quaking Grass)
Description:
Briza media, commonly known as Quaking Grass, is a clump-forming perennial grass prized for its delicate, pendulous seed heads that tremble or "quake" in the breeze. The heart-shaped, greenish-yellow seed heads turn a golden-brown in late summer and add texture and movement to gardens. It is particularly valued in naturalistic, meadow-style plantings, borders, and cottage gardens. Quaking Grass adds lightness to any landscape and is perfect for use in dried flower arrangements.
Light Requirements:
Quaking Grass thrives in full sun to partial shade. It performs best in full sun, where it produces the most abundant and upright flower spikes. In hotter regions, it can tolerate some afternoon shade, but too much shade may reduce flowering.
Soil:
Briza media prefers well-draining soil, though it can tolerate a range of soil types, including sandy, loamy, or clay soils. It grows best in moderately fertile soil but is adaptable to poorer soils. Amending the soil with compost or organic matter can help improve fertility and moisture retention. Quaking Grass can tolerate slightly acidic to neutral pH (6.0-7.5).
Height/Spread:
This ornamental grass typically grows 12 to 24 inches tall and spreads 10 to 18 inches wide. Its upright flower stems and airy appearance make it suitable for mass planting or as a filler in garden borders.
Hardiness Zones:
Briza media is hardy in USDA Zones 4-8. It can tolerate cold winters and hot summers, making it a versatile choice for a variety of climates.
Winter Care:
In colder regions, the foliage will die back in late fall. You can leave the seed heads through winter to provide interest in the garden and cut back the dead foliage in early spring before new growth appears. In milder climates, Quaking Grass remains evergreen, but you can still trim back old growth in early spring to encourage fresh, vibrant growth.
Watering:
Quaking Grass prefers moderately moist soil, especially during the growing season, but is drought-tolerant once established. Water regularly during the first growing season to help the plant develop a deep root system. Once mature, water during extended dry periods but allow the soil to dry slightly between waterings.
Fertilizing:
Briza media typically does not require heavy fertilization. Apply a balanced, slow-release fertilizer in early spring if the soil is nutrient-poor. Otherwise, a light application of compost or organic mulch in spring will provide adequate nutrients. Over-fertilizing can lead to excessive foliage growth at the expense of flowers.
Pruning:
Pruning is minimal for Quaking Grass. In late fall or early spring, you can cut back the dead foliage to the ground to prepare for new growth. Removing spent flower heads after the seed has ripened can help maintain a neat appearance, though some gardeners prefer to leave them for winter interest.
Propagation:
Quaking Grass can be propagated by division or seeds. Division is best done in early spring or fall. Carefully dig up the plant and separate the clumps, ensuring each division has roots and foliage. Replant the divisions in well-prepared soil. Seeds can be collected from the mature seed heads in late summer and sown in the fall or early spring.
Pests and Diseases:
Briza media is relatively pest and disease-resistant, making it a low-maintenance addition to the garden. However, it can occasionally suffer from rust or fungal issues in overly humid or wet conditions. Ensuring good air circulation and proper spacing between plants can help prevent these problems.
Summary:
Briza media (Quaking Grass) is a charming, ornamental grass known for its delicate, quivering seed heads that add texture and movement to gardens. Thriving in full sun to partial shade and well-draining soil, it grows 12 to 24 inches tall and spreads 10 to 18 inches wide. Hardy in USDA Zones 4-8, this low-maintenance grass requires regular watering during establishment, minimal pruning, and light fertilization, making it an excellent choice for cottage gardens, borders, or meadow-style plantings.