I have only owned it since February and it is still growing in the bark and perlite mix in which it arrived. It started sending out an inflorescence a couple of weeks after it arrived. All my slippers get fertilised mainly on the foliage, with some sprayed on the potting media, using either Kelpak or Easygro (South Africa), every two weeks. I water fairly heavily during the summer and let the pots dry totally before I water during the winter. I pull the label out of the potting media to check for moisture, only watering when it is just moist.