I have Drosera filiformis appearing everywhere and since I have never had a flowering one in the house I can only assume that they were transported on Nepenthes foliage or maybe in the NZ sphagnum, coire brick or bag of peat. I see most in the cookie boxes of coire that I germinated Nep seeds in. I have already moved the Nep seedlings to their own pots and will just keep the cookie boxes moist to see how the Drosera do. I think I will move all of them into one box and then document with pictures.