The application was due to be discussed at a planning meeting at Sefton Council on Wednesday evening (19 August).
More than 500 people in Southport are on the waiting list for an allotment and could wait up to four years to grow their own fruit and vegetables in one of the town's existing three sites.
If the plans are passed, people could soon combine a visit to their allotment with a trip to the garden centre from next spring.
Garden Retail columnist and executive adviser Leslie Kossoff said: "This is why you have to have unending respect for these guys. It makes perfect sense to build on an already successful trend — grow-your-own — by providing yet another means of generating revenue — allotments — so that, in one fell swoop, you can cross-sell and build new customers in the bargain."
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