This salvia is from Spain which perhaps explains the foliage which looks very much like the herb sage – salvia officinalis. If this plant grows in a fairly dry sunny position with good drainage it will grow readily and seed around a bit. It forms a small bush with evergreen frost and drought hardy foliage. Because it is not so difficult it is not uncommon in Australian collector’s gardens although it is rarely offered for sale.
Violet flowers are borne in spikes in spring and summer.
I wouldn’t prune it much myself unless you have a number of them and don’t mind losing one. It may only live a couple of years depending how close you are to its native conditions.
I don’t think it would be that easy to grow from cuttings but is not difficult from seed.
At present I do not have plants to offer.