#CoSo I need an honest friend right now: Am I stupid??

I bought cat grass seed. I planted in a little seedling tray. It grows like a champ, woot. All the grass😻 many happy feelings.

I took the lid off and walked away. The cat found the cat grass. The cat ate the cat grass. The cat promptly threw up the cat grass.

IS IT NOT FOR CATS? 👀
I'm so confused. I...