[5] Unlike many other large botanical gardens in North America, the TBG does not receive funding from the provincial or federal governments, and it produces over 95% of its operating budget from self-generated income through membership fees, fundraising events, course revenues, and from the generosity of individual and corporate donors.

Part of the TBG's Silver LEED Certification[11] includes the collection of rainwater from the water features as well as the building, which is stored in two cisterns found in the perennial borders.

Each year TBGKids educates over 6000 children through school visits, summer and March break camps, family programs, and outreach initiatives.

The library's resources surround themes of domestic horticulture, such as landscape design, flower arrangement, plant species, growing herbs and vegetables, urban agriculture, and many others.

[13] The library offers courses and programming for adults and children, and features an art gallery with rotating exhibitions with horticultural themes.