Mammoth Wild Rye

(Leymus racemosus)

Mammoth Wild Rye (Leymus racemosus)

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Estimated Native Range
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Summary

Leymus racemosus, commonly known as Mammoth Wild Rye, is an evergreen perennial grass native to temperate regions, including grasslands, dunes, and other open areas in Eastern Europe and Western Asia. It typically grows 50–100 cm tall with robust culms that are 10–12 mm in diameter. The foliage is bluish-green, contributing to its ornamental value, and it produces tall, dense flower spikes that can add vertical interest to a garden setting. The species is known for its ability to adapt to a range of soil conditions and its tolerance to drought once established.

Mammoth Wild Rye is valued for its low maintenance requirements and its use in soil stabilization, particularly on slopes and in areas prone to erosion. It is also beneficial in agricultural systems for its role in reducing nitrogen levels through biological nitrification inhibition (BNI). This grass is suitable for naturalistic plantings, as a ground cover in open spaces, and for creating a bold texture in the garden. It thrives in full sun and requires well-drained soils, tolerating both low and medium water conditions. While generally disease-free, it can become invasive in some regions, so gardeners should monitor its spread.CC BY-SA 4.0

Plant Description

  • Plant Type: Grass
  • Height: 3-4 feet
  • Width: 6-9 feet
  • Growth Rate: Moderate
  • Flower Color: N/A
  • Flowering Season: Summer
  • Leaf Retention: Evergreen

Growth Requirements

  • Sun: Full Sun
  • Water: Low, Medium
  • Drainage: Fast

Common Uses

Border Plant, Butterfly Garden, Deer Resistant, Drought Tolerant, Edible*Disclaimer: Easyscape's listed plant edibility is for informational use. Always verify the safety and proper identification of any plant before consumption., Erosion Control, Low Maintenance, Potted Plant, Rabbit Resistant, Rock Garden, Salt Tolerant

Natural Habitat

Temperate grasslands and dunes

Other Names

Common Names: Bredbladig Strandråg, Volga Wildrye, Mammoth Wildrye, Da Lai Cao

Scientific Names: , Leymus racemosus, Elymus racemosus, Leymus racemosus subsp. sabulosus, Elymus giganteus, Elymus sabulosus, Leymus sabulosus, Leymus racemosus subsp. crassinervius, Elymus mexicanus, Leymus giganteus

GBIF Accepted Name: Leymus racemosus (Lam.) Tzvelev