Dahlia imperialis Alba

The white form of the Tree Dahlia.  Truly spectacular, growing over 3.6 metres in one season in the UK. Mature plants have massive tubers and are hardy in most areas of the UK if protected with a mulch/straw.  Flowers very late in the year in October/November, so can be susceptible to early frosts.  The foliage alone, with leaves over a metre long and massive bamboo like stems makes it a very valuable addition to the jungle garden