as far as sexing i have no idea, when adults the males will croak (especially if misted). that is the only way that i know of. i have tried lots of plants with american toads, they tend to wreck them within a month or so. plants that make good gorund cover are good, and a hardy plant that can stand the burrowing. they uproot most other plants. devils ivy, pothos, very similar seem to work very well, water the plants about every 1.5 weeks and douce it with water. i would recommend getting a large pothos because the smaller ones could be uprooted much easier. like one of the ones in the hanging basketw work well. make sure to have a thick layer of substrate ( i use the dirt from the expanding brick things) maybe 2-4 inches. i also put a thin layer of sheet moss over it (very thin) and that provides very good hiding spots along with the plants. they don't need any type of special lighting. they are nocturnal so they don't need a lite at all. i used to have a florescent on his tank but then took it off because he'de just hide from the lite. i did a test, i put it along the width of the tank so the other side was shady and he barly ever came to the lighted side. if you want one though just get one of the 1-2$ ones from home depot or something. getting one that doesn't run the full length of the tank woudl probally be better so they can have shade if they want it. make sure that you dust the food with vitiman/calcium supplements though, Rep Cal makes good ones, this is esp. important if there is no UVB light. glad i could help!