Prickly pears or cactus plants seen growing in Australia.
Titles read: "Prickly Pear. Australia's prize pest."
Various shots of the 'Prickly Pear' or cactus plants growing in the wild. Commentator says the former garden ornament has become a pest, spreading rapidly across 100 million acres.
The plants have wrapped themselves around a bottle tree and are slowly strangling it. We are shown how to get at the fruit inside the plant. Caterpillars of the cactoblastic moth are seen eating away at the prickly pears. The leaves are cut open to show them crawling around inside.