Licorice plant - Helichrysum petiolare
Credit: Wikimedia - Kurt Stüber 
This image is originally part of the article Beautify Your Garden with Silver-Foliaged Plants
Helichrysum petiolare can be pruned into a dense, rounded shape if desired. The silvery-grey foliage also looks good cascading over walls or rockeries. Make sure drainage is adequate as if the soil is too wet it will cause rotting.