Board Thread:General Discussion/@comment-5052376-20131004182511/@comment-5565348-20131007031407

And an even trickier thing is, that it can split into a simpler two event splits or at least three due to the following:
 * In PvZ1, Winter Melons are planted over Melon-pults. Potentially just a simple body change, or a replacement. Interpretation can lead to a lot of possible shenanigans.
 * In PvZ2, Winter Melons are plants planted on their own. Just think about it.

So there's no definite event. Even if the Winter Melons did somehow escape vaporization(even though the Sun's heat transmission makes escape rather hard due to the far range it has and light takes slightly longer than usual to get from the Sun to the Earth due to distance), it's entirely possible they got outnumbered, outplayed, the atmosphere killed them, or a rock fell on their shells. The sheer amount of possible shenanigans that can happen from this makes it hard to keep track of stuff. (I love mindgames, specially on you.)