Sorbus 'Joseph Rock'Rocks Mountain Ash trees are an outstanding choice to add colour and interest to a small garden. They also have a special feature the berries are amber yellow and birds do not realise that they can be eaten, leaving them on the tree as decoration for the entire season! Sorbus 'Joseph Rock' has pinnate foliage which is a light to mid green in summer and matures to a stunning display of red, orange, copper, scarlet and purple in autumn. This truly