Last year, I planted a sweet little Magnolia virginiana 'Moon Glow' next to my deck. There is also a young m. grandiflora 'Bracken's Brown Beauty' nearby. Now I'm considering replacing the deck with a patio (in brick or cobblestone or tile), but I'm concerned about what their shallow roots would do as far as pushing up the surface and making it uneven. Bad idea? Would a raised patio work? Thanks for your input.