Old man cactus
How plants survive dry mountain conditions.
11 Aug 2011
Image: Anna FahertyOld man cacti (Espostoa superba) may look like they are wrapped up in cotton wool, but they are perfectly adap ...more
Image: Gerd BreitenbrachThese columnar cacti grow near the equator at altitudes up to 2500m, where high levels of ultraviolet (UV) rad ...more
Image: James SmallThe bright white hairs reflect the sun’s intense UV rays like a pair of mirror sunglasses. They also insulate ...more
Image: njg234908You can find other plants adapted for life at high altitudes in the display up the steps. Look for ‘hairy’ pla ...more
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