[Agastache rugosa] 'Anise Hyssop'
This 'All American Winner' produces golden-yellow colored foliage with 3 inch spikes of blue flowers. Plants grow 20 to 36 inches tall and stand up very well even under humid conditions. Grows best in well drained but moisture retentive soils in full sun to some morning shade. Blooms from June to October but later up north. Can be grown as an annual with good performance the first year. The golden leaves contrast well with the medium blue flowers in the landscape. In the spring the emerging foliage is a deep yellow with an orange cast and reddish brown tinting.
In zone 4 over winter dry and use a dry winter mulch, most years we have no problems with this plant coming back but it is a short lived perennial lasting for three or four years but self seeding.. Surface sow seeds with germination in 5 or so days at F 65. Easy.