In 1989, Desert Orchid again won at Wincanton, this time with a new jockey, Richard Dunwoody. After a second in the Tingle Creek Chase, he headed for Kempton, where he took his third King George, this time as the 4/6 favourite. He followed up with a win at Wincanton and then took the Racing Post Chase at Kempton. The Racing Post Chase of that year included many top-class handicappers and graded horses but Desert Orchid, carrying the huge weight of 12 stone & 3 pounds (77.6 kg), beat the opposition, led by the top-class Delius - a feat the official handicapper said could not be done on ratings. A third in the Cheltenham Gold Cup preceded Desert Orchid's convincing win in the Irish Grand National at Fairyhouse. He was given top weight of 12 stone (76.2 kg), but was even money favourite and won by twelve lengths. This was despite an uncharacteristic bad jump at the final fence.