Quote:
Originally Posted by Shoreguy
In a previous post in this thread, you state that in addition to the amount of light that Neof. Shingetsu receives, temperature also affects the red coloration at the base. What temperatures are ideal to promote the best coloration?
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Pigmentation production increases significantly, relative to the light given, when the nightly temperatures drop below about 60F. This needs to be paired with decent light though. In low light it won't produce much pigmentation even when the temps are low.
Obviously it's not possible to grow at these temperatures year round, which is the reason why a lot varieties known for anthocyanin pigmentation (e.g. shingetsu, hokage, taegeukseon, etc) are said to have seasonal pigmentation that shows its best in the spring and/or fall.
These are usually characteristics to be enjoyed during those seasons rather than trying to force them all the time. If you artificially force them to grow them at these temperatures year round, they won't actively grow. If you give them so much light that they have strong pigmentation year round, it's usually way too much light, and even short of burning, it'll cause other problems like stunting.