Vulpia myuros Seeds | Rattail Fescue
LATIN NAME: Vulpia myuros
COMMON NAME: Rattail Fescue
Plant Profile
Rattail Fescue is a fine annual grass of dry, poor ground in Europe and western Asia, with thread-like, rolled leaves and dense, bristly panicles that give the plant its name. It stands only twenty to forty centimetres but thickens into a soft, low turf on gravel, walls and bare sandy banks.
It completes its life cycle quickly in spring, sets its bristly seed, and dies, leaving a straw-coloured stubble. In gardens it appears uninvited in gravel and thin lawns; in agriculture it has become a serious weed of no-till cropping in the American Pacific Northwest, where the reduced tillage that protects soil also protects its seed.
Science & Biotechnology
Its germination needs light, which is why it colonises bare surfaces and why a mere mulch of soil suppresses it, a fact both gardeners and no-till farmers work with. Its explosion as a cropping weed is a standard case study in how a change in tillage reshapes a weed flora without introducing a new species.
Taxonomically it sits in the Vulpia branch of the fescue group, close to Festuca, and its tiny, narrow spikelets make it a test of identification skills for students of the family. Its chromosome races vary across its range, and the polyploid forms have wider tolerance than the diploids, a pattern studied as an example of how grass weeds diversify.
Uses & Benefits
As a garden plant it is a curiosity rather than a mainstay: a quick, fine annual for a sand bed or a gravel pot, useful where a temporary, self-sowing turf is wanted on the poorest ground. Its seed feeds finches, and its soft texture earns it occasional use in naturalistic seed mixes.
Its main written record is agricultural, where the advice is to mulch, rotate and avoid letting it seed. Its straw stubble has also been noted by naturalists as a favoured basking surface for small reptiles on dry banks. Because it is short and shallow-rooted, it never competes seriously with a garden crop, and its real cost is the seed bank it leaves behind rather than the season’s growth.
Growing from Seed
Sow the seed on the surface of sandy, poor soil in spring and press it in; light is needed for germination, which takes one to two weeks.
Give it full sun and water only to establish; rich soil and shade do it no favours.
If grown deliberately, cut it before the bristly seed ripens unless self-sowing is the plan; it is an annual and must set seed to return, which is the whole of its management. A centimetre of soil or grit over the seed drill is enough to exclude it, which is precisely why it asks to be grown on an open surface. Seed of the wild type is tiny, and a pinch sows a square metre; handle it mixed with dry sand for an even scatter.
Our Take
A bristly little annual grass of gravel and sand, quick in and quick out, grown on purpose for texture or mulched against like any weed.
Related Reading
More species in the same orbit as Rattail Fescue: