Wisteria is possibly one of the most romantic, showy and vigorous climbing plants. It has trailing racemes of scented lilac-blue flowers from late spring to early summer. It is a woody climber which can clamber through trees, over archways and pergolas or up sunny walls, where it will require sturdy support. Also ideal for steps and railings at the front of a house - we have planted many in Dublin in this exact location. Plant against a sunny or partly sunny wall in moist but well drained soil. Pruning, which encourages more flowering but is not essential, should take place twice a year: once after flowering, when it can be loosely tidied, and again in the winter, when each piece of new growth should be cut back to three buds. Plants are approx 60 cms tall in a 2L pot.