Starter plants of this spectacular Butterfly Bush salvifolia Lavender. If you are looking for a butterfly attracter for your garden, this one is for you. These gorgeous 6 to 8 inch flower spikes are just covered with hundreds of these tiny lavender blossoms, and the butterflies flock to them for all their nectar. The bush will grow to 6 feet and 4 feet wide and is hardy in zones 6 to 9.