Hmm.. wracking my poor old brain to come up with anything the defense might have to give to the prosecution..if their case is that the body was placed there while KC was in jail, then there should be some expert entomologists and botanists and such to testify as to plant and insect life that might support that theory. Maybe some sort of animal expert too.. I don't see any of that. They need to get moving on this subject.
somewhere out there is an expert witness who will testify that some weed or another might have grown there after august. And if that is the way they are going to proceed with the case, then the prosectuion needs time to go marshal it's own experts that will testify about when the area was flooded and how long the body must have been there, according to its own botanists and such.
I haven't heard that the defense has any such witnesses, nor, I think, is it apt to find any ..not any reputable experts who would lay their hard won reputations on the line. Perhaps they have approached some, but found what they could honestly testify to would not support the defense time line.
so I can only conclude the reason the defense hasn't handed over their evidence is that they don't have any to hand over.