The eighth level in Challenge Mode for Pikmin 2. It has more Dwarf Bulborbs and Red Bulborbs than anywhere in the game! So it is VERY hard to get a Pink Flower.
Try Finding the bulborb that has a key. Reseting here will help. Take out all Bulborbs in the path to the pod. Lureing away the dwarf's will make it easier. Collect any other treasure by defeating other bulborbs (you don't have to for a pink flower).
Using Ultra Spicy or Ultra Bitter Spray can help a lot while fighting the Red Bulborbs, particularily if you can hit two at once with Ultra Bitter Spary. Also always make sure you can hit them from behind. The Dwarf Red Bulborbs Shouldn't give you much trouble.