Chicago Horticultural Society is an independent non-profit foundation based in Glencoe, Illinois. Established in 1890, the Chicago Botanic Garden is owned by the Forest Preserve District of Cook County and operated by the Chicago Horticultural Society. Forest Preserve District tax support provides one-third of the garden's annual operating budget. Membership earned revenues, grants, and private donations provide two-thirds of the annual operating budget. The assets of the foundation are managed by the board of directors.Chicago Horticultural Society's investment portfolio is valued at $106.3 million, with investments in domestic and international equity, fixed income, private equity, real estate, hedge funds, and cash.