In April 2013, Waitrose launched its flower garden raange and waitrosegarden.com, offering 6,000 garden products.
An extension of its Alan Titchmarsh range launched this week.
Waitrose says it will open 130 garden pods in 2014 in addition to the 40 opened in 2013.
Waitrose could not confirm sources which suggested there will be a full roll out of pods for its 304 supermarkets.
It hopes for 10 per cent of the garden market within two years.