I have seen similar posts on this forum with plants not unlocking. It seems to have become a somewhat common issue. I passed night 15 on the Dark Ages about 5 times, but it will not unlock and when going through the plant selection in the beginning of a level, it is not even shown to pick from nor is it shown as locked. It is only shown in the almanac as locked and when I click "view on map" in the almanac, it just gooes to it and does not do anything either. Please help as this plant is needed to pass some of the remaining levels. I would buy it if I could too, but I can't even do that...
