Mammoth wild rye (Leymus racemosus)

Mammoth wild rye

Also known as: Siberian lyme grass

Several factors threaten crop expansion into new areas. Scientists have been investigating evolutionary relatives of wheat to incorporate into the modern cultivar to improve its resistance to biotic and abiotic stresses. Leymus racemosus is one such relative that has shown tremendous potential in this regard.

Scientific classification

Species

Mammoth wild rye (Leymus racemosus)

Grasses, sedges and allies

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Perennial

Lifespan

Grass

Plant Type

Summer

Growth Season

Images of Mammoth wild rye

Distribution of Mammoth wild rye

Distribution Map

Mammoth wild rye, a perennial grass, is native to certain temperate regions of the Northern Hemisphere. It has spread beyond its natural range, now found in parts of Eastern Europe and the Southern Hemisphere. This plant thrives mainly in continental climates and has adapted to various climates in its introduced territories.

Native

Cultivated

Invasive

Introduced

No species reported

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Quickly Identify Mammoth wild rye

Robust clump-forming habit in cool climates.

Long, arching steel-blue leaves, 8-16 inches (20-40 cm) long.

Distinctive tall spikes with hairy florets, 6-14 inches (15-35 cm) tall.

Versatile in saline-rich soils with rapid spread.

Linear leaves with parallel venation, smooth texture, and glossy appearance.

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Care Guide for Mammoth wild rye

Every week

Water

Full sun

Sunlight

Fertilize: Annual fertilization of mammoth wild rye with a 2-inch layer of mulch or compost in spring promotes growth and soil health. This practice ensures moisture retention and vitality. Avoid over-fertilization, especially in mature plants, and apply evenly, keeping the mulch away from the stem to prevent rot.

Pruning: Mammoth wild rye thrives with annual pruning in early spring. Cutting back old stems to ground level promotes airflow, reduces disease, and encourages healthy foliage. This process enhances ornamental appeal, prevents overgrowth, and ensures a robust display throughout the growing season.

Propagation: Mammoth wild rye is a resilient perennial grass that propagates best through division. To cultivate effectively, divide the root clump in early growth, ensuring each section has part of the crown and multiple shoots. Replant divisions immediately, spaced adequately, and maintain moisture for establishment.

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