When people think of Bonsai, they usually think of small indoor plants, usually kept on a countertop, table, or mantle. However, among collectors, some of the most prized Bonsai are blooming outdoor trees, which can create a beautiful and dynamic effect in your front yard.Generally, outdoor Bonsai trees are no harder to care for than indoor trees, although most breeds will need to be brought into shelter during freezing winters. For that reason, they're best kept in a pot, like o …