Fungicide (2002) [Visual Vengeance Collector’s Edition] [Blu-ray]

Deep within a tranquil forest, five strangers meet at a secluded bed and breakfast. But one of these guests happens to be a mad scientist, who uses his vacation to accidentally create an army of killer mushrooms. Now unleashed on the other guests, and with the body count quickly piling up, it's up to the survivors to arm themselves and fight back against the slaughtering shrooms!