Okay I have a list of the commonly sold plants in the pet stores in the city (going there this Saturday!) And I am wondering which ones are okay... It's a 20 gallon and someone pointed out I needed taller plants 
Cabomba plant: I haven't heard of this one, but it looks nice.
Hornwort plant: pretty sure some people on here have them
Wisteria: I know this one is compatible with bettas, I've heard people have them
Moneywort plant: never heard of it
kyoto plant: again never heard of it?
Anubius plant: I think someone here has them?
Medium sword plant: That'd be a tall one for them right?
Anarchis plant: don't think I have heard of it
Java fern plant: I know people have this one
My 20 gallon has purple gravel, that's smaller than my regular gravel. Any plants that don't need special care would be lovely... like, no special substrates and such
I want to go in already knowing, and have heard your experiences with certain plants, then go in blindly. That way no "but the employee said" problems!
Cabomba plant: I haven't heard of this one, but it looks nice.
Hornwort plant: pretty sure some people on here have them
Wisteria: I know this one is compatible with bettas, I've heard people have them
Moneywort plant: never heard of it
kyoto plant: again never heard of it?
Anubius plant: I think someone here has them?
Medium sword plant: That'd be a tall one for them right?
Anarchis plant: don't think I have heard of it
Java fern plant: I know people have this one
My 20 gallon has purple gravel, that's smaller than my regular gravel. Any plants that don't need special care would be lovely... like, no special substrates and such