W Tree is a locality in Victoria, Australia, located on the Gelantipy Road, in the Shire of East Gippsland's high country near the Snowy River.

W-Tree is home to an ecovillage, a Tibetan Buddhist centre, and other ecosensitive businesses, among them the headquarters for WWOOF Australia.

Leo was educated at the original W Tree State School (which has since disappeared and only a few rocks that formed the garden beds survive).

He did not have any formal horticultural training and was self-taught, but hosted hundreds of visitors including many noted plant naturalists and botanists.

For many years and still today Grevillea Poorinda Royal Mantle is grown, in grand display, on the slopes around Parliament House in Canberra.