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The old man cactus [Cephalocereus spp] grows a downy beard of long, silky, soft white spines around its stem. Its beard makes it difficult for wildlife to access its stem, for nesting. Its yellow, white or pink Trumpet shaped flowers aren't followed by wildlife friendly fruits. Instead, they're followed by round seedpods that split conveniently open when ripe. Wildlife therefore need not attack the intimidating columnar stem, whose mature height is a lofty 50 feet/15 meters. Instead, area birds and rodents just need to wait for the pod to open, for them to eat the contents.

The cactus has to worry more about environmental conditions than about wildlife. It grows in subtropical and tropical Mexico, where it favors seashores and mountains. So it has to worry about being eaten by such humidity lovers as bacteria, fungi, and microbes.

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15y ago

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