Cactuses, Flower Festival, Chiang Mai, Thailand
20 images Created 6 May 2011
Every year on the first weekend of February, towards the end of the cool season, the Flower Festival in Chiang Mai Thailand takes place. Their distinctive appearance is a result of adaptations to conserve water in dry and/or hot environments. In most species, the stem has evolved to become photosynthetic and succulent, while the leaves have evolved into spines.