The service launches in March and is targeted at people who lack design experience or the time to create their own gardens, said Hervey-Brookes. There will be 10 design options and three levels to the service, called Bradstone Design.
Five designs are vernacular, with traditional influences. The other five are "mood driven and boutiquey" in feel.
The first level of service is free - customers visit the Bradstone website, choose a garden theme and download plant and product lists.
"This costs nothing and they do it themselves," said Hervey-Brookes. "But if they are not that handy, a Bradstone-assured landscaper can visit, costing from £200. But plans are sent to me before construction starts to make sure the design fits the chosen garden theme."
The third level of service is for people with large gardens, bigger budgets and a desire for a bespoke creation. It involves site visits from Hervey-Brookes - an award winner at Chelsea, Hampton Court and Malvern shows - and costs more than £10,000. See www.aggregate.com/bradstone/ideas.