Regarding this, how fast does wooly thyme grow?
Wooly thyme may reach 6 inches in height, but do not worry: it does not spread quickly.
Subsequently, question is, why is my wooly thyme dying? Thyme grows well in slightly dry soil. It can develop root rot or mildew problems if it's kept too wet. As the roots suffocate and die in wet soil, the foliage will also begin to die back. Drought and overly dry foliage can also cause dieback, although usually the whole plant declines at the same rate.
Keeping this in consideration, can you walk on wooly thyme?
Can you walk on thyme, like you could turf grass? Yes, once it's established, but not too much, especially when dry. But make a path with stones or pavers for high traffic areas.
Is woolly thyme edible?
Next up are the creepers: Mother-of-thyme (Thymus serphyllum), Thymus 'Coccineus', and woolly thyme (Thymus psuedolanuginosus). They aren't particularly edible, but they make an aromatic, drought tolerant lawn alternative that you can actually walk on.