Virtual Villagers -- The Secret City Hints

Here's some potions that can help ease game play
1 rose + 2 black orchids = Light and Springy(they jump higher)
3 roses = romantic embrace (good 4 parenting skills)
2 roses + 1 cactus = fertility increase
2 lotus + 1 cactus = restores half health

If you really need to fish in the game, here's a way to fix the shark problem.

Nature Faction: 2 black orchids + 1 pitcher plant
Magic Faction: 2 roses + 1 berry

note: potions may blow up even if you use the right ingredients
happy to help :)