Purple Rain was one of the best alliums in the recent RHS Trials at Wisley. It is reliable and fast growing. They prefer to be grown in the sunnier more sheletered parts of the garden that is also free draining. Alliums are superb for bees, butterflies and ther pollinating insects and will naturalise very well in most soils that are well drained. Feed with bone meal or similar during the leaf and flowering stage to ensure future good growth and performance. Alliums perform very well with early flowering perennials. Will also benefit from using bulb starter when first planting.