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American sand rye

Name: American sand rye
Brand: Akène
SKU: AKE-SEMENCES
Price: 4.99 CAD
Availability: OutOfStock

Common name American Dune Wildrye

Latin name Leymus mollis

Quantity per packet Minimum 300 seeds

This native perennial grass supports biodiversity while improving the stability of fragile soils. It is one of the best species for naturalization, dune restoration, and ecological restoration projects throughout Canada.

Product information

Product
identification

Common nameAmerican Dune Wildrye

Latin nameLeymus mollis

FamilyPoaceae

TypeNative grass

CyclePerennial

Quantity per packMinimum 300 seeds

Product
description

American Dune Wildrye (Leymus mollis) is a robust native perennial grass recognized for its attractive blue-green foliage and upright seed heads that mature to warm golden-beige tones in late summer. Forming bold clumps that reach 60 to 150 cm (24 to 60 in) tall, it provides outstanding structure and texture in naturalistic landscapes. Flowering from June through September, it adds graceful movement and a distinctive wild character to gardens. Hardy to -40°C (-40°F), this Canadian native grass is especially valuable for stabilizing soils and enhancing open landscapes, shorelines, and ecological restoration projects.

American Dune Wildrye thrives in full sun and well-drained sandy to loamy soils that retain slight moisture during establishment. Sow Leymus mollis seeds in autumn or in spring after a short period of cold stratification. Surface sow or cover the seeds only lightly, then keep the growing medium evenly moist until germination. Once established, this hardy native grass tolerates nutrient-poor soils and extended dry periods, requiring only occasional watering during prolonged drought. A light application of compost in spring is generally sufficient, and the previous season's stems can be cut back before new growth begins.

In the garden, American Dune Wildrye is ideal for riparian buffers, slopes, sandy landscapes, ecological restoration projects, and naturalized plantings. It combines beautifully with American Beachgrass, Beach Pea, Gulf of St. Lawrence Aster, and Silvermound Artemisia to recreate coastal-inspired landscapes. Its dense root system effectively stabilizes fragile soils, while its seeds provide food for birds and its dense clumps offer shelter for beneficial insects. With its exceptional adaptability and outstanding ecological value, Leymus mollis is one of the finest native grasses for supporting biodiversity throughout Canada.

Sowing
guide

Sowing periodAutumn or spring after cold stratification

Best time

Spring after the last frost

Sowing depthSurface sow

Spacing / density

45 to 60 cm (18 to 24 in)

Germination temperature18 to 20 °C (64 to 68 °F)

Germination time10 to 15 days

Propagation

Propagate by seed or by dividing established clumps.

Growing
method

Sow American Dune Wildrye seeds in autumn or spring after a short period of cold stratification to improve germination. Surface sow or cover the seeds only lightly, then maintain consistent moisture until seedlings emerge. Choose a location in full sun with well-drained soil that retains slight moisture during establishment. Once rooted, this hardy native grass requires very little maintenance and quickly becomes valuable for erosion control, dune stabilization, and ecological restoration. Its elegant seed heads provide ornamental interest well into winter.

Soil
and care

ExposureFull sun

Soil

Well-drained sandy to loamy soil. This species tolerates poor soils once established and performs exceptionally well in coastal environments.

Soil pH5.5 to 7.5

Watering

Moderate watering is helpful during establishment. Once established, this native grass tolerates dry conditions while preferring slightly moist soil.

Fertilization

A light application of compost in spring is generally sufficient. Heavy fertilization is not recommended, as this species naturally thrives in relatively poor soils.

Care levelLow

In spring, cut back the previous season's stems before new growth emerges. During summer, watering is only necessary during prolonged drought. Leave the seed heads in place through autumn to feed birds and provide ornamental interest. Throughout winter, the standing stems offer shelter for beneficial wildlife. Once established, this native grass requires very little maintenance.

Container
growing

Recommended pot size

30 to 45 cm (12 to 18 in)

American Dune Wildrye can be grown in a large, deep container at least 30 cm (12 in) deep with excellent drainage. Use a light growing medium amended with compost to encourage healthy root development. This native grass performs well in containers on sunny patios and terraces. Occasional watering during extended dry periods helps maintain vigorous growth, while its upright habit adds striking architectural structure to naturalistic plantings.

Bloom,
harvest
and garden

Its bold, upright seed heads and exceptional ecological value make American Dune Wildrye an essential native grass for natural landscapes. It also stabilizes fragile soils while supporting biodiversity.

Garden use

American Dune Wildrye is ideal for naturalized meadows, sandy landscapes, dune restoration, revegetation projects, and ecological gardens. It combines beautifully with American Beachgrass, Beach Pea, and native wildflowers to create dynamic, biodiversity-rich plantings. Its upright habit adds height and movement, while its seeds feed birds and its dense clumps provide habitat for beneficial insects. It is one of the finest native grasses for ecological restoration throughout Canada.

Bloom period

Decorative seed heads appear from June through September and mature to attractive golden-beige tones late in the season.

Flower colorGolden beige

Foliage colorBlue-green

Harvest

August to September

Fruiting

Decorative caryopses

Wildlife appealBeneficial wildlife

Size
and facts

Height60 to 150 cm (24 to 60 in.)

Spread45 to 75 cm (18 to 30 in)

Growth rateAmerican Dune Wildrye is ideal for naturalized meadows, sandy landscapes, dune restoration, revegetation projects, and ecological gardens. It combines beautifully with American Beachgrass, Beach Pea, and native wildflowers to create dynamic, biodiversity-rich plantings. Its upright habit adds height and movement, while its seeds feed birds and its dense clumps provide habitat for beneficial insects. It is one of the finest native grasses for ecological restoration throughout Canada.

Hardiness zoneUSDA Zones 3–8

Minimum temperature-40°C (-40°F)

Foliage typeDeciduous

Insectes utilestrue

Résistant aux cerfstrue

Pet friendlytrue

Planting
partners

Good companions

American Beachgrass, Beach Pea, Gulf of St. Lawrence Aster, Silvermound Artemisia

Avoid planting with

Northern Blue Flag Iris, Cardinal Flower, Marsh Marigold, Horsetail

Recipe
and inspiration

The seeds were traditionally harvested and eaten by some Indigenous peoples after appropriate processing. Today, American Dune Wildrye is grown primarily for its ecological value and ornamental beauty. Its seeds also provide food for seed-eating birds, while its greatest contribution remains dune restoration, habitat restoration, and biodiversity conservation.

Frequently asked questions

When should I sow American Dune Wildrye seeds? +

American Dune Wildrye seeds can be sown in spring or autumn. A short period of cold stratification generally improves both germination rate and uniformity.

Is American Dune Wildrye easy to grow? +

Yes. American Dune Wildrye adapts well to a wide range of well-drained soils and requires very little maintenance once established.

Does American Dune Wildrye benefit wildlife? +

Yes. Its seeds provide food for birds, while its dense clumps offer valuable shelter for beneficial insects and other wildlife.

Can American Dune Wildrye be used for ecological restoration? +

Absolutely. Its vigorous root system and excellent tolerance of sandy soils make American Dune Wildrye one of the best native grasses for erosion control, dune stabilization, and ecological restoration.

How do you care for American Dune Wildrye? +

Cut back the previous year's stems in spring before new growth appears and apply a light layer of compost if desired. Otherwise, this hardy native grass requires very little maintenance.

The availability of our seeds varies depending on seasonal availability, production schedules and supplier inventory. Certain varieties may only be offered for a limited time based on their natural growth cycle, sowing period or available stock. These product pages are designed to help and inspire gardeners in choosing the right seeds for vegetable gardens, flower beds, pollinator gardens, container growing, naturalization projects and sustainable outdoor spaces.