Best day

I just went and looked again. Both types have a silvery/white underside to the leaves.

Bill

edwmax

I suspect your Blue Java is not, if it does not have reddish/pink coloring on the back of the mid rib. So likely both of your plants are Namwah.

__________________

cincinnana

The jebait gods strike again.

__________________

Akula

Underside leaf color and even the color of the fruit are not perfect tells to differentiate between Blue Java and Pisang Awak (Tall Namwa). I always thought the blue fruit were the obvious tell but I visited a fellow member a week ago and his Blue Java fruit did not look like Crazy Banana's avatar despite the plant being from CB. More like a super dark green than a blue to me. Maybe it was the light. Local growing conditions have a pretty big influence on this plant's demonstratable characteristics and taste it seems to me. In my opinion individual banana attachment to the peduncle seems to me to be the best way to differentiate between Blue Java and Pisang Awak/Namwah.

I think the OP's plant is a Namwah.

Best day

My Blue Java is definitely the real deal. I have grown it for about 6 years and have had fruit from it many times. The fruit of Namwa and Blue Java are very, very different. In my coastal Southern California growing conditions the two plants appear identical. At least there are no distinguishing characteristics that me or anyone at my house has been able to see. That is until one of the two varieties fruits. Then the fruits are very, very different in color, taste and texture. Night and day different.

Bill

crazy banana

I have to say, that not all of my Blue Java bunches have that extreme silverish blue like my avatar photo. It was definitely how the light has hit it when I was taking the picture since I have no photshop or photo skills at all.

Spaugh

I got a "real" blue java from a member here and the leaves are noticeably more wide than the namwahs from the nursery.