Under the right conditions, Blue Lyme Grass can become very invasive. However, it makes a good low-maintenance ground cover for large areas. The vigorous plant will benefit from being cut back to the ground in the summer. The blue color is attractive well into the winter. It does provide seeds for birds and also serves as a larval host plant for the Zabulon Skipper butterfly.

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This Blue Lyme Grass is a cool season grass from western Europe, often along the seacoasts, that tolerates heat well. I have seen it occasionally in some landscapes in southeast Pennsylvania and it is grown elsewhere in the US and is sold by some larger conventional nurseries and garden centers. It spreads a lot by rhizomes (underground stems). Its foliage is blue, especially if it is the variety of L. arenarius glauca or the cultivar of 'Blue Dune.' The grass flowers resemble wheat. It is too aggressive for most small gardens.

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