Quaking Grass

Quaking Grass, or Briza media, is an ornamental perennial grass valued for its delicate, heart-shaped seed heads that tremble and shimmer in the slightest breeze. It brings movement, texture, and a light, natural feel to borders and wildlife-friendly planting schemes.

Providing seasonal care is essential to keep the plant healthy, tidy, and performing well year after year. Below is a complete seasonal care guide for Quaking Grass throughout the year.

Spring

Pruning and Maintenance

In early spring, cut back any dead foliage from the previous season to just above ground level using clean, sharp secateurs. This allows fresh new growth to emerge and keeps the plant looking neat.

Feed

Apply a light dressing of a balanced, slow-release fertiliser or a mulch of compost in spring. Avoid overfeeding, as grasses perform best in moderately fertile soil.

Dividing (if necessary)

Every 3–4 years, Quaking Grass can be divided in spring if clumps become overcrowded or growth weakens. Lift the clump carefully, divide into sections, and replant into well-drained soil.

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Begin regular watering as temperatures rise, keeping the soil lightly moist while new growth establishes.

Summer

Pruning and Maintenance

Minimal pruning is required during summer. Allow the flower and seed heads to develop fully, as they provide the characteristic movement and ornamental interest of the plant.

Mulching

Apply a 2 to 3-inch layer of organic mulch around the base of the plant to retain moisture, suppress weeds, and regulate soil temperature, particularly in newly planted areas.

Watering

Quaking Grass is drought-tolerant once established but benefits from occasional watering during prolonged dry spells. Allow the soil to dry slightly between waterings.

Autumn

Pruning and Maintenance

Leave the seed heads in place through autumn for continued movement, texture, and wildlife interest. Avoid cutting back at this stage.

Protection from frost

No special frost protection is required, but a light mulch can help protect the roots and improve soil condition.

Winter

Protection from frost

Quaking Grass is fully hardy and tolerates winter conditions well. Leave foliage and seed heads in place to protect the crown and provide winter interest.

Pest and disease prevention

Pests and diseases are rarely an issue. Check occasionally for signs of rot caused by poor drainage and remove any affected growth if necessary.

Plant SOS

Flopping stems – A sign of overly rich soil or too much shade. Reduce feeding and move to a sunnier position.

Poor seed head formation – A sign of insufficient light. Plant in full sun for best results.

Yellowing foliage – A sign of poor drainage or waterlogging. Improve drainage and reduce watering.

Sparse growth – A sign the plant needs dividing. Divide mature clumps in spring.

Weak growth – A sign of excessive competition from surrounding plants. Improve spacing and airflow.

Holes in leaves – A sign of slug and snail damage. Use Slug and Snail repellent or Slug and Snail control.