The building will house a100-seater restaurant, café, shop, visitor entrance and indoor plant centre. Christopher Bradley-Hole is designing the surrounds.
As part of the RHS £160 million investment programme, as well as the Welcome Building, there will be opening up of parts of the Laboratory Building and a new centre for Horticultural Science and Learning.
Plans were unveiled for the building in 2015. Programme director is Andy Jasper.
This post was written by: HortWeek