Dobbies development surveyor John Sherwood said: "We expect the planning application for the proposed Dobbies Garden World at Orton Grange to go before the planning committee in mid-November.
"If the application is approved it will enable us to target an early opening in 2010, bringing substantial investment and jobs to the local area.
"We have already established a strong relationship with Westwood Nurseries, which we expect will supply us with bedding plants, and we hope to establish further links with local businesses and suppliers."
Klondyke has objected to the new centre, saying that Tesco has not proved a need for the site.
Dobbies has submitted design alterations to Carlisle City Council.
Planning agent GVA Grimley said: "Dobbies is willing to accept a separate, additional condition that will ensure that the garden centre cannot become a food store."
Dobbies wants to build on the site of Westwood Nurseries, owned by fabric company and joint applicant Linton Tweeds.
Dobbies has altered its original design for the centre to include a more discreet entrance area with natural landscaping outside, as opposed to the previous, ornamental landscaping design.
The height of the building has also been lowered, from 6m to 4.8m, while concerns about the safety of pedestrians accessing the garden centre have been addressed, with the revised plans showing a new traffic island on the A595.
A further 15 local sites have now been examined and discounted by the company.