AGERATUM houstonianum

Floss Flower



Height: 6-24" (15-60cm)
Flowering Time: Summer
Flower Colour: Blue, mauve, pink, white

Botanical Classification:


Angiospermae (Angiosperms)
Subclass: Dicotyledonae (Dicotyledons)
Superorder: Asteridae (Daisy Superorder)
Order: Asterales (Daisy Order)
Family: Asteraceae (Daisy Family)
Genus: Ageratum (Floss Flower)
Species: houstonianum (Houston's)
Ageratum houstonianum

Ageratum houstonianum is one of the most popular annuals for edging a border. It makes a neat bushy plant with slightly coarse leaves, with clusters of neat fluffy flowers in shades of blue and mauve, or even pink or white, in summer. Taller varieties are now becoming popular, which can be placed further back in the border or in containers, and can also be used for cutting and indoor decoration.


Harvesting and Growing from Seed:


(29 days)

Seed Pod There is no seed pod. Each individual flower produces a tuft of seeds, looking like an
old-fashioned shaving brush.

Seed The seeds are tiny dark brown logs. There are many seeds from each flower.

Seedling The seedleaves ae rounded, and the first true leaves are wide and pointed.

(You can check the meaning of any technical terms new to you in the Botany section of the site)

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