ID believers and Noah's Flood believers are usually the same. From an earlier post: "Fundamentalists are particularly unhappy that ID leaves scientific skepticism about the flood completely unanswered. They are aware that the flood myth is vulnerable to serious scientific critiques, doubting that it could possibly have occurred. ID is not helpful to YEC believers, and they are very disappointed."
Genesis does not mention how plants survived the "Flood". Anwsersingenisis offers many theories, none of which has a Biblical source. The New Orleans situation offers a clear test of whether plants will survive being flooded for 10 days or 40 days.
The Noah's Flood theory is clearly ridiculous. But here we will see exactly how many tomato plants, flowers, bushes, etc. survived being under water for this time. This observable evidence will not support a Noachian Flood.
Unless all conditions are controlled to be the same as at the Flood, science can't even by its own lights answer this question. Something seems to have been in play at that time which allowed humans to live hundreds of years, for example. Perhaps a relatively brief dunk in virtually pure water would not have any effect on plants at that time.
I was making a joke about witches in answer to someone else's joke. Try to stay calm and focus.