Besides the flamboyant hybrids familiar from flower shops and stalls, there are many beautiful species of alstroemeria. One that is perfectly suitable for unwatered mediterranean-climate gardens is Alstroemeria pulchra. It comes from quite a wide range of places in Chile's mediterranean-climate area, with winter rainfall, and summer drought for anything from three to five months, or even longer. It can take a little frost. Its drought-resistance is shown by the fact that the dormant rootstock of the plant in my photo had been left by me, forgotten, in a polythene bag in my cellar for fifteen months before I planted it!
In the wild it grows in the company of friendly small plants and grasses that give it a little shade. It has a rather sprawling habit, and in Greece I've planted it among very low shrubs.