Several images of The Grange show a domed glass conservatory on the east side of the house, which would have been filled with plants readily available from catalogues. One 1827 catalogue advertised 79 varieties of apple among other fruit and ornamental trees, as well as a wide variety of shrubs, flowers and greenhouse plants. We know that there was an orchard house on the property growing peaches, nectarines and grapes. William Boulton won prizes at the 1844 Toronto Horticultural Society Show for geraniums, roses, greenhouse plants and pansies. The gardener, John Gray, named a geranium he developed "Pelargonium boultonianum" after the Boultons.