A Native turned invasive

Recently they have promoted dwarf trees to match the diminishing lot size of houses being built. With this they have brought in dwarf forms of the native Southern Magnolia, usually from coastal areas. Forms like "Little Gem", "Edith Bogue" etc, are dwarf forms coming from all up and down the eastern seaboard and gulf coastal areas....usually from Maritime forests. With this they brought in an enormous amount of genetic diversity as they cross with their enormous native cousins. Now instead of being an occasional component of regional forests, they are starting to explode. I have seen many dense groves of them, always near a neighborhood or shopping center where dwarfs are planted. They form those large evergreen groves which I think look awesome but also help smother pines. Since they never shed their leaves pine seedlings cannot take hold in the dark shade. But since they are technically native...albeit improved...no eradication efforts warrant any fund approval. Snicker Snicker.