Blue Bayou bill williams mountain giant hyssop
Agastache 'Blue Bayou'
USDA zones5 to 9
SunNeeds full sun (6+ hours)
WaterHandles dry to moderate soil
Size15 to 18 inches tall15 to 18 inches wide
- Bloom season
- Summer, autumn
- Bloom color
- Lavender-blue
- Soil types
- Sand, loam
Garden uses
Attracts
Notes
'Blue Bayou' Bill Williams Mountain giant hyssop (Agastache 'Blue Bayou') is a perennial for borders, pollinator gardens, 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 average, sandy or loamy soil. Lavender-blue flowers appear from early to late summer and again in early autumn, and butterflies, hummingbirds, bees, and birds visit the blooms. Deer and rabbits usually look elsewhere for a meal.
Pairs well with Nepeta, Little bluestem, and Feather reed grass.