Elymus Species, Blue Wheat Grass, Blue Lyme Grass, Blue Wheatgrass, Magellan Wheat Grass

The most intensely blue of all blue-foliaged plants.

This species forms tight clumps and does not spread underground. Does...Read Moren't self-sow, either. It is often confused with the common invasive but otherwise very similar Leymus arenarius (Z3-4), which is also called blue Lyme grass.

Requires full sun and excellent drainage. Unlike Leymus arenarius, this species is intolerant of drought. A cool-season plant, it tends to go dormant in hot humid summers, especially where night temperatures remain above 70F. Not a plant for the southeastern US. It may be evergreen in mild winter climates.

The flowers are ornamentally insignificant.

I lost it during a summer drought. It has a reputation for being a miffy plant, one that isn't long-lived at least here in eastern N. America.

Rick Darke's Encyclopedia of Ornamental Grasses indicates hardiness only to Zone 6. The Missouri Botanical Garden says it's hardy to Z5.

Clearly springviolets70 is describing Leymus arenarius, the OTHER blue Lyme grass.

Beautiful grass, highly invasive!! In one season this plant sent out 25 to 35 deep runners that appeared 1 to 4 feet from the original ro...Read Moreot ball. Would be great for erosion control, not for ornamental landscaping. I will be pulling this out of my beds for the next few seasons. Wish the tag from the garden center had a warning. I will certainly do more investigation before planting another ornamental grass.