He emigrated to the United States and settled first in Cleveland, Ohio, then went to California as part of the gold rush of 1850.
In December 1881 he assisted Nathan Cole Jr. in the establishment of the Los Angeles Times but had to give up the business after only a short time when he could not pay a printing bill for the newspaper,[2] which was then taken over by Jesse Yarnell, Thomas J. Caystile and S.J.
[1] In September 1882 he joined in starting another newspaper, the Los Angeles Telegram, which he moved to Portland, Oregon, after less than a month.
[3] After only a few issues, Gardiner moved to San Diego, where he became advertising manager for the Coronado Beach Company.
Fifty-seven years after his death, a Times reporter wrote that Gardiner "wore mutton-chop whiskers, a high silk hat and a frock coat to the astonishment of Los Angeles citizens" and that Cole, who was the son of a rich St. Louis resident, put up most of the money to found the Times, but it was Gardiner who "imperiously went about the streets as business manager.