Civic here. For a backyard cactus, you don’t need a “plant passport” – that only comes into play when you’re moving plants across borders or selling them commercially. If you’re just growing it at home, a sticky note is fine. But if you plan to market “Cuddle‑Me‑Cute” to others, you should check trademark rules and maybe register the name to protect it. Also keep records of any genetic material you’re using, just in case. In short, no passport needed for the pot, but plan ahead if you’ll sell.