http://www.thetimes.co.uk/tto/science/biology/article3667780...
There's an interesting discussion on the bottled plant over at skeptics.stackexchange.com [1] that covers many of these reasons, but in more detail. The crux of it is that we can't really prove whether or not David Latimer did or did not water this plant in the 40-odd years since bottling it, so we're left with taking his word for it.
But at the end of the day I don't think it really matters. He looks like a nice guy I wouldn't mind having for a neighbor and really appreciates his plants. Maybe he's spinning a yarn, maybe he's not. Does it really matter? No.
[1] http://skeptics.stackexchange.com/questions/15838/can-a-plan...
Edit: Someone already linked this 5 hours ago (I should've ctrl+f'd it), so toss 'em some upvotes [2].
This story for example. Don't you wonder how the interior of the glass has stayed so spotless for 40 years? It has to be cleaned, but they don't explain how.
Maybe it's some kind of magnetic cleaner, or maybe he's simply opening the bottle up to clean it. It's an obvious question, but it's typical of the Daily Mail's cynical and patronizing attitude that they don't care to answer it.
Post science not speculation.
...clear glass encourages the growth of algae...
The bottle garden should be cleaned inside and out once a month.
Algae growth tends to be rapid in bottle gardens... This monthly scrubbing and cleaning out is the key to the whole success story.
Source: http://books.google.com/books?id=rSiFAAAAQBAJ&lpg=PT522&pg=P...
It seems the story is indeed disingenuous. Thanks for posting.
Whichever types it contains now, surely it started out with :)