I have had clover growing in the pot with one of my tropicals that I
brought indoors last fall.

I doubt whether it is clover. It is probably Oxalis, a common weed. Some
growers leave small stands of Oxalis as an accent or companion plant, but it
has a tendency to take over.

Iris,
Central NY, Zone 5a, Sunset Zone 40
"If we see light at the end of the tunnel, It's the light of the oncoming
train."
Robert Lowell (1917-1977)