Norman and Arturo,
Swiss chard grows up until frost, if you are in a frost zone before winter. I would think in a warmer climate where you both are you could start your seeds early in the ground when your weather starts to get warm - of if you are an all around warm climate - you can grow swiss chard. As you cut the leaves, new leaves will start to grow. So the more you cut, the more you get.
I think it has a sweeter taste than kale. You can compare swiss chard to a sweeter tasting spinach type leaf plant.
Good luck if you both should try to grow it. You really don't have to do anything to it - just water it, cut and eat.
WL: Black Jack, Black Genoa, LSU Red, Roberts Golden Rainbow, BNR, LSU Strawberry, Unk Burgan, CDD Noir, CDD Blanc, LSU Black Mutante DC-7, Col.Littman's Black Cross, Eastchester Black Unk., Cavaliere, Petite Negra, Pastiliere, Marteneca Rimada, Figoin, Zingerella, Socorro Black