The 1st and 2nd open age sides played senior home matches at Cardiff Arms Park during the 2015 Welsh Conference season.
The initial success of rugby league teams Carlisle and Fulham RLFC which were backed by Carlisle United and Fulham association football clubs respectively, encouraged Cardiff City to form Cardiff City Blue Dragons for the 1981–82 season.
The club initially signed three (former) rugby union internationals – Steve Fenwick, Tommy David and Paul Ringer.
A fourth (former) international, Brynmor Williams, was signed later ish Their first game against Salford on 30 August 1981 attracted a crowd of 9,247.
The new owners came under pressure from the Welsh FA who wanted Ninian Park as their permanent headquarters and were opposed to ground sharing with rugby league.
Four days before the start of the 1986–87 season, the Rugby Football League dropped Bridgend Blue Dragons from the fixtures for failing to secure a ground.