[2] He married Iris Veronica Martin in 1954 and their two sons, Ian and Duncan, now live in Newtownards and Perth, Australia respectively.
Craig Wallace worked at Samuel McGredy and Son, a company that bred and raised roses, immediately after leaving school.
After completing his degree, he joined the horticultural education and advisory service of the Ministry of Agriculture in Northern Ireland.
He led the development of the City of Belfast International Rose Gardens in collaboration with Sam McGredy IV and also began trials of new varieties in Sir Thomas and Lady Dixon Park in 1964.
[2] He was awarded the RHS Associate of Honour in 1981 for his work with Belfast parks, MBE in 1987 for services to horticulture[4] and the Royal National Rose Society Silver Medal (2004).