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American Agave, American Aloe, Century Plant

American Agave, American Aloe, Century Plant
Photo: Doug Bickerton, SA Department for Environment & Heritage
Invasive Plant
American Agave, American Aloe, Century Plant
Agave americana

This plant has grey, sharp-tipped, strap-like leaves which form rosettes about 1.8 m wide. Its common name is Century Plant, due to the mistaken belief that it only flowers once every 100 years. In fact, after 10 years, it produces pale yellow flowers on a very tall, branched stem.



  • Its spread is mainly vegetative with new plants arising from stolons and from dislodged plant fragments.
  • Commonly naturalized around old rural homesteads and coastal shacks, it has since spread to form dense, almost impenetrable thickets along roadsides and in coastal vegetation.
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Alternative Plants

Agave, Century Plant
Photo: Macbird Floraprint
Alternative Plant Agave, Century Plant
Agave attenuata
Succulent Plants

With and upright habit and heads to 0.9 m wide on stems up to 1.5 m, this plant has high architectural appeal.

Clumping habit when young, this plant is an ideal specimen for pots and a very popular accent plant. Extremely hardy and can withstand extremes in temperature.

Cabbage Tree
Photo: Andrew Smith, Warners Nurseries
Alternative Plant Cabbage Tree
Cordyline australis species and cultivars
Trees and Shrubs

Cordylines are hardy, erect, palm-like trees from New Zealand. They are easy care, generally unbranched and develop a broad crown of spreading sword-like pointed leaves. Plant in a full-sun or partshade position and protect from heavy frosts while young. There are many new and improved colourful cultivars now available. For more information visit your local garden centre.

Spineless Yucca, Soft Tipped Yucca
Photo: © immij pty ltd
Alternative Plant Spineless Yucca, Soft Tipped Yucca
Yucca elephantipes
Trees and Shrubs

A small, evergreen tree and one of the most versatile indoor and outdoor foliage plants. It develops a thick, branching trunk reminiscent of an elephant's foot. Mid-greed leaves are leathery and finely toothed. Adaptable to a wide range of climates and conditions, it is drought, salt and frost tolerant. This plant has high architectural appeal.

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