What did Mr. Donnelly place all over the top of his house from Tangerine?

In "Tangerine" by Edward Bloor, Mr. Donnelly places orange groves all over the top of his house as a way to showcase his pride in the family's citrus business. This quirky decision reflects his obsession with success and the importance of the orange industry in the community. The groves serve as a symbol of both his ambitions and the pressures that come with them.