I'm thinking of selling plants with caustic pollen in my flower shop
I hope you are joking. It doesn't sound safe to sell this to your customers.
I have no feelings for my customers. It would be better to have a corpse of a customer than a live one.
Selling customers flowers with toxic pollen is immoral. They could become ill or sick. You'll lose customers or even be charged for a crime.
I'm going to offer it for free to people. People should learn that I'm a big evil after this.
Don't you want to have customers that like your store? It will upset everyone if you sell toxic plants.