Act of Legislature assented to April 14, 1965 Queen Elizabeth II's approval of use of Royal Union flag given on May 11, 1965
Flag raised on May 21, 1965
Royal Warrant of Queen Victoria, May 26, 1868
Gazetted, November 16, 1869
Augmented of crest, supporters and motto by Royal Warrant of King Edward VII of February 27, 1909
Gazetted, April 24, 1909
In Ontario, the white trillium (Trillium grandiflorum), also known as the wake-robin and the white lily, was officially adopted in 1937. It was recommended by a special committee of botanists to the Ontario Horticultural Association, which canvassed the views of other horticultural societies in the province, also of high schools and collegiate institutes. In a British botanical work published in 1760 there is a reference to the trilliums as "the herb True Love of Canada."
The white pine, the loon, the amethyst and the colours green and yellow.