Online garden retailer, Crocus.co.uk, have appointed Linger as head of buying - products.
She had been at Wyevale since since July 2014.
Crocus chief executive Mark Fane said: "Crocus has built its success and reputation on plants but we feel there is a huge potential to grow our sales of other products for the gardener. Caroline has the experience and contacts to give us huge momentum over the next few years and we are absolutely delighted she is joining us."
Linger said: "I am excited to be joining Crocus and look forward to the opportunity to be part of the future growth of such a successful customer-focused and creative garden business."
Crocus has seen compound growth of 15 per cent over the last five years. This year the company says it is on track to achieve sales of £15m.
In May the company also swon gold at the Chelsea Flower Show. Crocus’s garden designed by Andy
Sturgeon for the Daily Telegraph won Gold and ‘Best in Show’. This is the eighth time in 11 years that Crocus has been awarded ‘Best in Show’. This year, Crocus will build James Basson's garden for The Telegraph.
Linger's move comes at a time of a shortage of top buyers in the industry.
Homebase have a vacancy for a similar role and Canadian Tire are actively trying to recruit in the UK too.