Tree Echium. Sold in 9cm pots.
A biennial plant with extremely rough, hairy leaves growing to approximately 1.8m in height. As a biennial this plant will not flower in its first year, but in its second year. After producing huge spikes, loaded with small blue flowers, it will self-seed and die. 
Care requirements: plant in a free draining soil in full sun or partial shade.
Attracts bees, butterflies and moths.
 
Half-hardy - hardy depending on location