Spotted Dumb Cane

I have never seen what looks like a corn cob on my Dieffenbachia maculata before.  The fuzzy stem was there and now it is being enclosed into the leaf.  Jim says that because I haven't had it in a humid area before, but then we have been here for almost two years now.  Can you tell from the first photo to the second how the leaf is enclosing the "cob" more fully?

If anyone knows what this means, will you let me know?  Thanks.

Yes, I have a messy plant area especially around the begonias.

Make it a great day!