Re:little Hogwort? (Score 3, Informative)

Yes, Hogwarts School of Witchcraft and Wizardry is, indeed, Harry's school. Additionally, a hogwart is a type lily. It can be found, among other places, at Kew Gardens. So, "little hogwart" might be an affectionate sobriquet (like "little pumpkin") a parent might use to refer to their child.