Briza media Seeds | Common Quaking Grass
LATIN NAME: Briza media
COMMON NAME: Common Quaking Grass
Plant Profile
Common quaking grass is a small perennial of dry, unimproved grassland on limestone and chalk, found across Europe and into western Asia. It grows thirty to sixty centimetres tall, with narrow, grey-green leaves in a loose tuft and a panicle of heart-shaped spikelets that hang on fine stalks and tremble in the slightest breeze.
The spikelets are green at first, then turn a pale straw colour as they ripen, and they persist on the plant for weeks. It is one of the most recognisable grasses of old meadows, and its presence is a reliable sign that the ground has never been ploughed or heavily fed.
Science & Biotechnology
The species is an indicator of long-established, low-fertility grassland, and its presence is used in habitat surveys to identify sites that have never been improved. Research on calcareous grassland has tracked its decline as meadows were ploughed, fertilised or abandoned, and seed from donor sites is now harvested for restoration projects.
Studies of its seed biology have looked at the short viability of the seed and the need for after-ripening before germination, which is why restoration sowings often fail in the first year. Work on its root structure has also shown how the plant survives drought on thin soils by keeping its growing points close to the ground.
Grazing history strongly affects its abundance, and heavy stocking removes it within a season.
Uses & Benefits
In the garden it is grown for the trembling seed heads, which are prized in dried flower arrangements and in fresh bouquets, where they add movement. It is a natural component of wildflower meadow sowings on poor, dry soil, and it combines well with small scabious, rock rose and wild thyme.
The plant is too small for a formal border, but it works at the front of a gravel garden or in a meadow strip, where its fine texture sets off larger flowers. The dried heads keep their shape for months if cut before they are fully ripe and hung in a dark, airy place.
The dried heads are also used in winter posies, where their delicate structure survives for months.
Growing from Seed
Sow in autumn or spring, barely covering the seed, at 15-20C. Fresh seed germinates well; stored seed loses viability within a year, so buy or collect it fresh. Prick out into small pots and grow on in a cool, bright frame.
Plant out in full sun on poor, well-drained soil; rich ground makes the plant flop and the seed heads lose their shape. Divide established clumps in spring if they thin in the centre, and avoid cutting the meadow before the seed has ripened if you want the colony to spread.
A late cut, after the seed has fallen, keeps the tussock tight.
Our Take
Quaking grass is small, modest and entirely charming, and its seed heads are worth growing for the vase alone. Poor soil and full sun are all it asks.
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