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Ageratum 'Aloha Blue'
Ageratum houstonianum 'Aloha Blue'
A compact, mounded annual with fluffy powder-blue flowers for borders and containers.
- Plant Type
- Annuals
- Width
- 8-12 In.
- Height
- 6-8 In.
- USDA hardiness zone
- 9
- Sun requirements
- Full Sun, Part Shade
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Create design onlineAbout Ageratum 'Aloha Blue'
Ageratum ‘Aloha Blue’ is a compact annual with a rounded mound of soft blue flower clusters. Syngenta Flowers lists it within the Aloha series as a dwarf garden form, and seed supplier William Dam describes it as an F1 selection with early flowering and good garden performance.
## Flowering and garden use
The breeder’s [Aloha Blue profile](https://www.syngentaflowers.com/emea/product/flower/70087567) gives a garden height of 15–20 cm and spread of 20–30 cm, with flowering from mid-spring through summer. [Ball Seed’s variety listing](https://info.ballseed.com/webtrackplantinfo.aspx?ENV=P&phid=001805428000616) lists bloom from late spring through autumn, so the season can extend later under some production and climate conditions. Its compact size suits edging, the front of a bed, dense bedding displays and small containers.
## Siting and growing conditions
Plant after frost in full sun; species-level guidance from [NC State Extension](https://plants.ces.ncsu.edu/plants/ageratum-houstonianum/) also supports partial shade and recommends moist, well-drained soil. Consistent moisture helps support flowering, especially in containers.
## Maintenance
Remove spent flower clusters to keep plants tidy and encourage rebloom. Water during dry spells, especially in containers, and replace the plant after frost because it is grown as an annual.