McDermott left Lead the Good Life in April 2011 after selling the gardening shopping channel, mail-order and internet company that also trades under the name Garden Bargains to Ideal Shopping Direct, an independent TV and online shopping business, for an initial £5m in January 2010.
After gardening leave, he launched You Garden, which mainly runs on-page adverts for specimen plants. He said results were "broadly in line" with his expectations, despite poor weather.
He stands to turnover in excess of £300,000 selling 18,000 Olympic bouquet cut flower rose bushes at £20 from Chessum/Schreurs.
McDermott predicted 2013 will be "a cautious year because everyone's had a stinker in 2012, but demand will be better as long as there's fair weather".
He said pent-up demand could kick in as early as autumn and grow your own and Mediterranean big-impact plants will be important. Customers buying "fewer, better plants is a trend that will continue into 2013 - not 100 or 250 but two or three dozen".