Perennial starter 9cm pot.  Verbena hastata Blue Spires is from the Verbenaceae family with branching square stems and purple-blue flowers appearing in summer through to autumn.  Flowers are held in candelabra type formation reaching 70cm - 1m + high.  Leaves are pointy and have a toothed edge, they appear up the length of the dark coloured stems.  Pinching back helps create a bushy plant and dead heading helps encourage more flowers.  Likes a sunny position but moist soil.  Loved by bees and beneficial insects.