The tag says thyme, silver edge and Thymus x citriodorus. The tag does not call this Lemon Thyme but online references do. They also mention the fragrant lemony smell but these plants do not seem particularly fragrant and definitely are not lemony. As for the name ‘silver edge,’ the leaves do not seem to have a silvery edge. Eventually I did find a nursery selling it under this name so perhaps it is indeed correct. The tag indicates it will form a 9-12-inch mound which should be lovely along the garden paths.