The move is the first step in a general streamlining of the business, which will see Westons' 32 ciders grouped into brand families, including Stowford Press, traditional ciders and draught traditional ciders.
The new-look organic range comes in a bespoke bottle, which is 10% lighter than Westons' previous bottles.
The relaunch is being backed with a £500,000 marketing campaign, including trade advertising focusing on the brands' heritage, consumer ads in organic titles and neck collars made from recycled card on the first 380,000 bottles.
"Our organic sales are growing 20% year on year by value and volume, according to Nielsen - it's becoming a huge market for us," said brand marketing executive Helen McIlveen.
"It's been 12 years since Premium Organic was given a face-lift. Now it's time to lift the image - it's a premium-end cider, so it's got to have a premium look and
appeal. We need to differentiate ourselves very strongly from the others in the category."
The move with the organic range follows Westons' corporate re-branding earlier this year.