The large, dark green leaves of the avocado plant grow up to 25 centimetres. The tree requires climates without frost and little wind to flourish and have a long history of culivation in central and South America. The leaves are succulent and thick, harvested for culinary usage from the Mexican avocado plant. It should be noted that leaves of the Guatamalen avocado plant have been shown to contain toxicity and should not be consumed. The leaves are used either fresh or dried, and impart a faint anise flavour most commonly in Central Mexican cuisine.