One of me cacti has a flower coming. It is one of them it only flowers when it is really happy types and rewards the wait with a magnificent bloom. The neat trick is that it has lived outside for about 12 years now. The centre started dying off badly a couple of years ago and half a dozen babies are living quite happily around the edge of the debris. One of them has one three day old inch and a half long furry bud pointing straight out and getting longer by the day, very phallic it is. It will open in about a week for three or four days and then just wilt overnight. If there is a series of them it lasts about three weeks, one opening just as the other closes sort of thing. Easy in a greenhouse.