LemonBonsai
Shohin
Just checked, nothing that resembles scale, still didnt see any other insects when checking either. Could this be anutrient deficency?Throwing this out there...on a slight possibility. Did you check the tree for scale. Those sap suckers weaken a tree...and make the new growth not so strong when pushed. What I've read...is scale can cause leaf curl in bougainvillea as well...and also discussed elsewhere. (Made me pause because not seen that as a side effect on my tigerbark. But also different foliage thickness.) You mentioned checking leaves for pests. What about trunk and branches for scale?
Also do bougies do good in dry heat? Because right now in canada its very dry heat. Do they thrive in hot humid temperatures? Because theres not been much humidity here.