It's hard to think of a more well behaved ground cover than creeping thyme and 'Elfin' goes the species one better.
Thymus praecox 'Elfin' (Creeping Thyme)
From Marie Iannotti, About.com
Thymus praecox 'Elfin' (Creeping Thyme)
Photo Courtesy of STEPABLES®.Plants for Edging
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