Yellow Giant Hyssop - Agastache nepetoides
 
- Fast growing strong-stemmed perennial producing whorles of tiny yellow flowers closely packed onto 5" terminal spikes.  
- Toothed, arrowhead-shaped leaves are up to 5" long but lack the fragrance common to the mint family.  
- Long late summer bloom lasting sometimes till frost.  
- Very attractive to bees and butterflies.  
- Often seen in  garden designs of the famed architect Piet Oudolf.
- Leave the dried flower stalks for fall and winter interest.