The conference would alternate with the Contact conference for the nursery stock industry that takes place every other January.
HTA business development director Tim Briercliffe said: "The Bedding Focus Conference has been a very successful event and could have been very successful this year, but I would rather do it less often and keep up the high quality.
"We've got the Contact conference in January so there would have been two grower events quite close to each other." He added that the HTA is now focusing on the Garden Futures conference in October.
Meanwhile, the HTA Seasonal Plants Group, the new name for the HTA Bedding Plants Group, is supporting an initiative to work with the RHS to provide displays in the four RHS gardens and plant centres in autumn 2012 and summer and autumn 2013. This will tie in with the HTA Plan it, Plant it this Autumn PR campaign.