Rosie Posie bill williams mountain giant hyssop
Agastache 'Rosie Posie'
USDA zones5 to 9
SunNeeds full sun (6+ hours)
WaterHandles dry to moist soil
Size12 to 24 inches tall2 to 3 feet wide
- Bloom season
- Summer, autumn
- Soil types
- Sand, loam, clay, chalk
- Soil pH
- Acid, alkaline, neutral
Garden uses
Attracts
Notes
'Rosie Posie' Bill Williams Mountain giant hyssop (Agastache 'Rosie Posie') is a perennial for borders, pollinator gardens, containers, and cottage gardens. It is hardy to USDA zone 5, or down to -20°F (-29°C). This plant likes full sun and dry to moist soil of most types. Its fragrant flowers draw butterflies, hummingbirds, and bees. Deer and rabbits tend to browse other plants first. Blooms open in summer and return in autumn.
Pairs well with Magnus coneflower, Russian sage, Lanceleaf coreopsis, and Red-hot poker.