Mahonia is a very tough shrub that will grow almost anywhere, has lovely towers of bright yellow blooms (about now) gives year round interest as it is evergreen, the leaves are quite spicy so as well as looking interesting are good security additions around perimeters. There are a number of varieties, from prostrate to tall and sculptural, I generally go for something in between, and as it is s easy to propagate I will often take cuttings, or layers from one garden to another (without being at all sure which variety it is)
Of course there are all sorts of interesting plants in the garden at the moment. We are getting yellows from the last of the Daffs, Kerria Japonica, Forsythia, primroses, and in my garden dandelions! Pinks, whites, and mauves from Aubretia, Bergenia and Camellias, and tulios giving us the full rainbow!
All photos from my own gardens this morning