Buy seed at Walmart, a wide range of selection and plant when you like. The planter boxes may be inhibiting growth. Plant one in the dirt if you can . If you must plant in boxes water from the bottom if possible. If you lived next door I' give you one to stuff. Will hold nearly a half pound of ground round.Thanks guys. I'm limited to big box stores for starter plants, so variety is whatever Bonnie decided to call yellow Bell. They are good, but I'm going to look for a source for some other varieties next season.