Talk:Guides/Nightmare Fuel Farming/@comment-16379397-20130829111438/@comment-3284423-20130829111950

They don't turn normal flowers into evil ones, they simply increase the numbers of an already existing evil flower population. If you have less than 6 evil flowers you do need to place some regular flowers before the bee can plant anything though, but there's a chance they'll place a regular flower instead of evil when you do that.