The new division will serve Scotland and Northern England.
Souters already offers sports turf construction, reconstruction, drainage and maintenance of natural grass surfaces.
The move comes after the recent purchase of the installation division of Turf Irrigation Services (Scotland) (TIS).
Souters Sports managing director Stewart Aird said: "Over the past few years we have worked closely with TIS on several high profile projects so it was a natural progression to bring the specialist irrigation equipment and experienced labour force into the Souter's family. We now have the ability to offer all of our clients a fantastic range of services."
TIS (Scotland) managing director Quentin Allardice said: "TIS can now look forward to focusing and further developing our already well respected irrigation consultancy and irrigation servicing divisions which we have expanded ready for the new season."
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