- Mon May 05, 2014 11:35 am
#202250
Precisely, that is why people always have red heliamphoras and I have green ones.
At higher elevations you get more sunlight but lower temperatures, so that makes a supossed higher photosinthetic rate, but as the temperatures are lower, that rate cannot go up with the sun uptake, and that ends up on the need in the plants to make anthocianins to protect themselves against too much sun, other protections involve a thicker cuticle to filter sunlight.
And this means, that, I having a little less sunlight, but higher temperatures, plants that live in colder places would need more sunlight to compensate the higher metabolism, and as that is not possible due to genetic regulations, they become green as trying to get as much sun as possible to try to have the balance they had in a mountain.
Some plants die due to stress on the process by not being able to addapt to the fast rate of growth needed.
Summary: in cold+less light→red obtained in heat+much more light→red obtained or death and heat=more growth cold=slower growth
I have personally and 3º personally see and heard it. VFT plants just 300m above my house get red and really nice, clumpy as any tropical VFT, but they do grow really nicely. D. capensis is 1/3 bigger and so with tokaiensis, N. ventricosa grows faster (weird, maybe the less stress it has). And some say they even have had VFT seed formation.