Ageratum houstonianum 'Blue Horizon'
Best low-maintenance annual for gardeners seeking long-lasting, butterfly-friendly summer color.
These fuzzy, blue-hued clusters offer reliable color that thrives through summer heat and humidity. Perfect for adding texture to containers or cutting for indoor arrangements, they provide a long-lasting, low-maintenance display that butterflies love.
$13.00
Who it's for
- Gardeners seeking a vibrant, non-fading blue accent
- Floral designers needing tall, sturdy stems for arrangements
- Landscapers wanting reliable color through intense summer heat
Who should skip it
- Gardeners preferring low-maintenance, permanent perennial plantings
- Growers in damp climates without optimal airflow
- Busy homeowners looking for strictly hands-off garden varieties
Performance breakdown
Bloom longevity
Continuous flowering from early summer until the first frost arrives.
Weather resilience
Sturdy stems withstand heavy rain and humidity without flopping over.
Pollinator appeal
Consistently draws butterflies to the garden throughout the entire season.
Cut flower utility
Long, upright stems make these ideal for fresh indoor arrangements.
Maintenance ease
Thrives with basic care and standard soil moisture requirements.
Deer resistance
Reliably deters browsing animals, protecting your garden investment.
Key Specs
Ships as
1 PINT (28.86 CU IN.)
Mature Height
24-30 inches
Spacing
10-12 inches apart
Blooms In
June through September
Exposure
Sun to Part Shade
Deer Resistance
Yes
Know before you buy
Still have a question?
Ask Metto anything about the Ageratum houstonianum 'Blue Horizon' before you decide.