The stunning Japanese Barberry comes in different varieties, all with slightly differing names and alternative coloured blooms. It can be found in colours such as red, yellow, pink, or even as a shrub that remains green all the year round. All Berberis thunbergii are slow growing, taking up to 20 years to reach full maturity. Different varieties will grow to different sizes. Whichever type you choose, they’re all easy to grow and require little maintenance once planted.