Have anyone observed the effect of temperature on pitcher color? This year , winter in Bangkok is a little bit colder (15 degree celcius compare with average 18 deg.) and last longer. My lady customer , who I gave her young N. xKuchingensis (mirabilis 'Chumphon' x ampullaria 'Songkhla') as gift last year , send me some photos.
This is the young I gave her
This is the young I gave her