If you39re looking for a slug45proof perennial for your garden then look no further slugs and snails are repelled by the mint scented felted foliage of this giant hyssop so wont touch these plants33 compact and evergreen agastache have colour45changing flowers which also attract bees and butterflies these plants can be grown in either the border or containers and are very drought tolerant height 60cm 40243441 spread 45cm 40183441