I don't think there is anything wrong with asking for proof when someone tries to pass something off as fact. I also don't think there is anything wrong for asking for a control when that person then says it's an experiment. I also don't think there is anything wrong with pointing out these 2 things when the person refuses to acknowledge that they could be wrong without any credible evidence to back them.

Rusty might have come across as brash but I feel his intentions were good.

FYI; I'm tired about hearing of the Farmers Almanac. The farmers Almanac is not the end all debate stopper. As a matter of fact 1/3 - 1/2 of the things in the almanac are just ridiculous or plain wrong. Personally when trying to back someone up I wouldn't source a reference that is known to contain as much bad information as it does good.

Horticulture/agriculture is a science. Let's practice good science and not hoodoo voodoo.