2Brazil nut, Bolivia

Oddly, the best place to see brazil nut trees is in the forests of Bolivia. They’re massively tall with impossibly straight trunks – you’ll need binoculars to see its large white flowers.

The nuts (pedantically, seeds) are arranged like orange segments within an outer casing the size of a cricket ball, and tough enough to withstand hitting the ground at 60mph. Unless they’re found by humans first, agoutis (hefty local rodents) can gnaw through the casing and disperse the seeds.