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Floss Flower, Ageratum 'Hawaii Blue'

Ageratum houstonianum

Family: Asteraceae (ass-ter-AY-see-ee) (Info)
Genus: Ageratum (ad-jur-RAY-tum) (Info)
Species: houstonianum (hoos-toh-nee-AH-num) (Info)
Cultivar: Hawaii Blue



Foliage Color:

Unknown - Tell us

Bloom Characteristics:

Flowers are good for cutting

Flowers are good for drying and preserving

This plant is attractive to bees, butterflies and/or birds

Water Requirements:

Unknown - Tell us

Where to Grow:

Suitable for growing in containers


6-12 in. (15-30 cm)


3-6 in. (7-15 cm)

6-9 in. (15-22 cm)


Not Applicable

Sun Exposure:

Full Sun

Sun to Partial Shade


Unknown - Tell us

Bloom Color:


Bloom Time:

Late Spring/Early Summer

Mid Summer

Late Summer/Early Fall



Other details:

Unknown - Tell us

Soil pH requirements:

6.1 to 6.5 (mildly acidic)

6.6 to 7.5 (neutral)

Patent Information:

Unknown - Tell us

Propagation Methods:

Unknown - Tell us

Seed Collecting:

Allow seedheads to dry on plants; remove and collect seeds

N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed


This plant has been said to grow in the following regions:

Granite Bay, California

New Milford, Connecticut

Palm Harbor, Florida

Panama City, Florida

Carrollton, Georgia

Burlington, Iowa

Broken Arrow, Oklahoma

Salt Lake City, Utah

Kalama, Washington

Spokane, Washington

show all

Gardeners' Notes:

No details have been posted.