The Secret Toxin Inside New Zealand Ngaio

The native New Zealand ngaio tree is beautiful but potentially lethal. Its leaves contain a potent toxin that can cause severe liver failure in cattle, sheep, and pigs that graze on them.

While these shrubs are common in coastal landscapes, they have a dangerous defense mechanism against herbivores. The plant produces a toxic compound called ngaione which is specifically harmful to the livers of grazing livestock. Despite this danger, it remains a popular choice for gardens and windbreaks due to its incredible growth rate. Always keep pets and hungry livestock away from these spotted white flowers.