Grass Master

A Grass Master, despite their odd name, aren't powerful Wizards or dangerous Supernaturals per se... they are practitioners of hearth magick who bespell common, everyday items around their home. Most of them are simple Witches who live an otherwise ordinary life.
In this case they cast a spell on their grass causing it to resist intruders or entrap foes. Not exactly a real threat, but annoying to anyone trying to sneak in or spy on a neighborhood Witch.