I did not know that was specifically forbidden. Can you explain?
Yes, please. My Church has flowers on the altar during all major holiday seasons
I could not find the source, but I remember this issue came up about a year ago with some traditional Catholics. I don’t know the exact terms for them, but it is my understanding that you cannot have flowers on the altar where the priest is consecrating the host. I have always seen flowers on the back (?) altar where the tabernacle usually is. But, after this came up, I don’t recall ever seeing flowers on the front (?) altar.