Centranthus ruber, also known as red valerian, blooms in June/July with bright pink flowers. Centranthus ruber’s bright pink flowers and pointed, blue-green leaves make it very popular. It’s not only a stunner in the garden, but also a standout in a mixed summer bouquet. Perfect for a sunny spot in the centre of a border.

If you buy perennials in autumn they might not look quite as beautiful as usual, because autumn is when they lose their leaves. The big benefit of planting perennials in autumn is that by spring they will be well rooted in the garden and ready to burst into growth.