I believe the template should have Level Adjustments, but I'm no homebrew expert. It seems a little powerful for a 2DH creature (even commoner). The template is too powerful for just that 1HD of adjustment (JMHO)

Place Spore seems just a little WAY too overpowered. You should add someway to counter the place spore ability, since this could end the life of any high level character adventurer pretty quickly, and he couldn't do anything about it.