Ageratum houstonianum 'Southern Cross'


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Key information

Plant type

Tender perennial

Flower colour





Half hardy

Skill level


photo by John Glover, copyright GAP Photos (42731)

Plant details

This popular dwarf plant has long been used for edging formal beds, since the plants remain neat and compact throughout the season. It is also valuable for filling in gaps in borders and for containers of all kinds wherever fine shades of blue or pink are required. 'Southern Cross' is an old variety, but still in great demand for its ease of cultivation and its extra large clusters of fluffy pink flowers that last well on the strong plants. They are in fact tender perennials and may be potted up in autumn to continue flowering indoors in warmth.

Family: Asteraceae

Genus: Ageratum

Species: houstonianum

Cultivar: Southern Cross

Plant type: Tender perennial

Flower colour: Pink

Feature: Flowers

Sun exposure: Full sun

Soil: Well-drained/light, Boggy

Hardiness: Half hardy

Skill level: Beginner

Height: 25cm

Spread: 15cm

Time to plant seeds: March to April

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