Once established it's reasonably drought-tolerant, so will be happy in a dry, sunny site, or gravel garden. To propagate, divide plants as soon as growth starts in spring.
Can you divide Stachys?
You're growing a gardener as well as a garden and it's useful to know just what can happen. In this situation, with the lamb's-ears, Stachys byzantina, the plant can be divided to make more plants, to cover a wider area or perhaps to share.
When can you separate lambs ear?
After 3 to 4 years, lamb's ears plants may die out in the center and need dividing. Divide in spring, removing the whole plant and separating out fist-sized divisions to replant or give a way. Lamb's ears spread faster in warmer areas and may need to be divided more frequently to keep them from spreading too far.