Beaucoup de Bacopa

I planted this mixed Bacopa into an old chimney pot in the spring because I wanted foliage and flowers that would fall down over the sides. I've found that it needs a lot of water and that if I gently shake off the dead flowers it will keep flowering - although I am not a fan of the smell that emits from a shake! I think it's an annual but will probably leave it and see what happens.