A couple months back, I planted my first round of flowers and shrubs (weeded and composted prior). Everything is growing great EXCEPT my Texas compact sage (2 of them) and my lavender (1 and my wildcard to plant). I've got mostly natives/hardy plants: lantanas (2), satvia greggis (2) , pink autumn sage (1), and knock out roses (2). I figured if there was something wrong with my soil or my watering schedule then all of them would be showing it. Any suggestions/advice would be greatly appreciated.
Background: In south Austin (Zone 8b - Del Rio Clay/Georgetown Formation), water twice a week, area gets 6-8 hours of direct afternoon sun per day and non-direct the rest of the day.