Posted: 13/07/2017 at 19:14
that's what the internet says, it is is oft repeated. I have found what Fidget has found. I wonder if it's about the time zones they come from and where they find themselves growing. One of the common names is Four o'clock flower, they should obey the rules.
Much of what you read on the internet and in books has been copied from the same place. If the original info is wrong, on it goes