Common Name: giant hyssop
Type: Herbaceous perennial
Zone: 6 to 10
Height: 2.00 to 2.50 feet
Spread: 1.00 to 1.50 feet
Bloom Time: July to September
Bloom Description: Raspberry
Sun: Full sun to part shade
Suggested Use: Annual
Flower: Showy, Good Cut, Good Dried
Attracts: Birds, Butterflies
Grow in average, medium moisture, well-drained soil in full sun to part shade. This hyssop cultivar is only winter hardy to Zone 6, and may not survive some St. Louis winters. Plant in a well-protected, southern or southeastern exposure and provide a good winter mulch. Otherwise, grow as an annual.
A woody-stemmed perennial in the mint family which grows to 2.5' tall. Agastache produces whorls of tiny, tube-shaped, raspberry flowers closely packed into 6-10" terminal spikes on stiff, purple stems. Leaves are serrated, ovate-lanceolate, and pleasantly aromatic (lemon-scented). Tolerates summer heat and humidity. Long, late summer bloom, sometimes extending to first frost.
No serious pest or disease problems.
A good plant for massing in a protected area of the perennial border.