Very interesting! Makes a lot of sense too! Just like plants grow leggy trying to get to the light, it makes sense they would move away or not grow towards the light if it meant self preservation. Great facts Fluffy!Exactly!
Cresting is when succulents stop growing vertically, and start growing horizontally. It mostly applies to species that grow horizontally in the first place. In cacti especially the result is a plant that kind of resembles a brain, or at least, to me. I believe they found that it's a way to conserve water, and protect the plants from the sun's harshest rays by staying farthest away from it