Ursula, You're probably right. I check again and the flower is nearly 3" cross; that's the regular size for zygo bloom, I think.
tarev, Glad to know you grew this zygo too. I don't have a big outside garden/yard and any way my main goal of growing plants is to do so indoor (make indoor garden?) -- make us and plants happy enjoying life indoor (of course we are not shut out from outside world, just try to make no discrimination between indoor and outdoor as possible. Can you imagine you can't distinguish if it is inside the house or outside when you sit beside a big window?) So far I have tried keeping all my plants indoor except some giant aloes, one big fragrant Camellia, several big jade plants and some other outdoor plants (don't know names) I don't have space for them inside...
Any way, fertilize and repotting will be my next study for this zygo b4 taking action. Any thoughts/advice? Thanks