Ailanthus altissima Tree of Heaven
This large, deciduous tree, native to China and Taiwan grows rapidly. It can grow 15m in 25 years and can reach a height of 20 metres. It is not long lived and usually dies before 50 years but leaves behind many new trees produced by suckers. It has become a pest in many countries. It flowers in May and June. It has a foul smell and has become unpopular in gardens.