This compact new Buddleia fits easily into urban gardens with its compact, rounded habit. Unlike other dwarf Buddleias that become very wide-spreading, 'Dark Dynasty' keeps its neat shape as it ages, growing to a petit 3' tall and 3 1/2' wide in two years. The rich purple, highly fragrant flowers adorn graceful branches from late summer to early autumn, feeding migrating Monarch butterflies on their trek.