Zauschneria californica is a pretty surprising plant, being both tough and having stunning tubular red flowers similar to some species-type fuchsias. In their native zones, they are frequented by hummingbirds, but they are unlikely to receive such distinguished guests in Europe.
These are often grouped with the larger Epilobium genus, which includes some common weedy species as well as several connoisseur species like this one. The variety ‘garettii’ is often sold, being a subspecies of Z. californicus.
These grow well in rockeries where they will receive good winter drainage, but watering in the summertime is often needed. A good ground-cover plant, these will spread slowly by underground rhizomes. Height to 10cm or so.