Is Lyme Grass edible?

Yes — Lyme Grass (Leymus arenarius) is catalogued as edible in this database. Always confirm species ID before harvest and source from clean ground.

How should Lyme Grass be stored?

Dried Lyme Grass keeps 12–18 months in an airtight glass jar away from direct sunlight and moisture. Volatile-oil constituents degrade faster — buy in small quantities and use within 6 months of opening for peak potency. Refrigerate tinctures once opened.

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Lyme Grass

Leymus arenariusfam. Poaceae

Educational content — not medical, botanical, or professional advice. Plant identification, safety, and edibility depend on local conditions, cultivars, and correct identification. Consult a qualified botanist or forager before consuming or handling wild specimens. How we source & review →

edible perennialperennialnative euculinaryedible seededible

Updated7 July 2026·Quick Q&A →

Leymus arenarius (Lyme Grass) — botanical photograph

Pl. AA3A — Leymus arenarius

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Overview

Lyme Grass (Leymus arenarius) belongs to the Poaceae family and is a perennial grass known for its adaptability across various European climates. Native to regions including Belarus, Belgium, Denmark, Finland, France, Germany, and other parts of Europe, this plant thrives in light, medium, and heavy soils with a pH range of 5.7–6.5, making it resilient in diverse environments. Its edible seeds are a notable feature, adding nutritional value to foraging practices. Standing at about 1.2 meters tall, Lyme Grass is an ornamental addition to landscapes while also serving as a valuable food source.

Quick answers

What is Lyme Grass?

Lyme Grass (Leymus arenarius) belongs to the Poaceae family and is a perennial grass known for its adaptability across various European climates.

Full Q&A reference →

Compare with:Avena wiestii→Barbed goatgrass→Green Bristle Grass→all comparisons →

Growingconditions · propagation · uses

Cultivation

Lyme Grass thrives in light to medium and heavy soils with a pH between 5.7 and 6.5, making it adaptable to various conditions. It prefers dry to moist environments and can grow up to 1.2 meters tall. Hardy from zones 5-9, this perennial is suitable for temperate regions. For cultivation, ensure the grass receives adequate light but avoid overwatering; it is best suited in well-drained soil. Propagate through seed or division. Harvest the edible parts by collecting seeds when ripe.

Light

8/10

Water

Dry, Moist

Soil

Light (sandy), Medium, Heavy (clay)

Hardiness

5-9

Life cycle

Perennial

Habit

Graminoid

Mature size

1.2 m tall

Soil pH

5.7–6.5

For first-time growers

How to grow Lyme Grass for the first time

8steps

Starting with Lyme Grass is a straightforward task for beginners, focusing on basic soil preparation and care.

1
What you'll need
Leymus arenarius seeds or young plants, a garden fork, a rake.
2
Best time to plant
Plant in spring after the last frost or fall before the first freeze.
3
Soil and container prep
Prepare soil by loosening it with a garden fork to about 30 cm deep. Ensure drainage is good, as Leymus prefers well-drained conditions.
4
Sowing or transplanting
Direct sow seeds in the ground at a depth of 1-2 cm, spacing them 30-45 cm apart. Alternatively, plant young plants directly into the soil.
5
First two weeks
Keep the area moist but not waterlogged during germination. Water once or twice per week if there is no rain.
6
Ongoing care
Water Leymus sparingly, especially in wetter months. Fertilize lightly with compost every spring to promote healthy growth.
7
Harvest or pruning
Prune dead foliage in early spring to encourage new growth and maintain the plant's appearance.
8
Common mistakes
Overwatering, planting too close together, not providing enough drainage, neglecting to prune old growth.

Edible & utility

Edible parts:Seed

Edible uses: The seed of Lyme Grass is edible and can be harvested for consumption. Typically, the seeds are dried before being ground into a flour or used in various culinary applications. They can also be eaten raw but are more commonly prepared by grinding to incorporate into breads, pastries, or other grain-based dishes.

Other uses:FiberErosion controlWeaving materialGround cover

Contextrange · companions · related

VII

Distribution

20 native · 10 introduced

Distribution across2 continents· 20 native· 10 introduced

Europe17 regions

native (17)BelarusBelgiumDenmarkFinlandFranceGermanyGreeceIcelandIrelandNetherlandsNorwayPolandRussiaSpainSwedenUkraineUnited Kingdom

Americas1 region

introduced (1)Greenland

Broader regions

native:Føroyar

introduced:Czechoslovakia, Baltic States, Chatham Is., Chile South, Connecticut, Falkland Is., Illinois, Indiana, Michigan

Specimen gallery

1 image

Explore further

Companion planting

Lyme Grass companions →

Compare with similar plants

vs Avena wiestii vs Barbed goatgrass vs Green Bristle Grass

Growing zone

USDA zone 5-9

XII

About this entry

Last updated: 7 July 2026
Citation: How to cite this entry · Submit a correction

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Lyme Grass

Overview

What is Lyme Grass?

Cultivation

How to grow Lyme Grass for the first time

What you'll need

Best time to plant

Soil and container prep

Sowing or transplanting

First two weeks

Ongoing care

Harvest or pruning

Common mistakes