Dwarf Magnolias - How Big Do They Really Get?
I have some confusion about "small" magnolias such as "Teddy Bear" (pictured below) and "Little Gem." Teddy Bear, for example, is listed as around 12 feet wide at maturity. A nursery recently advised me that "Little Gem" (similar) will get much bigger than its 15-20 foot width in time and outgrow its space. Another designer says not so: that they can be maintained to size. The internet continues to say 12-15 wide everywhere I look.
Can anyone advise on how feasible it is to plant a dwarf Magnolia in an allotted space based on its (roughly 15-foot wide) listed measurements?