How do you grow catnip?

With a bucket and spade and water.

"Catnip plants are easy to grow. They do, however, take a long time to grow."

"It is legal to grow a catnip plant. It grows like a weed by throwing seeds in the garden. The seeds can be purchased from Home stores such as Home Depot, or Lowes."

Your Cells are growing always, even when You have stopped growing in size.

With a proper amount of water, sunlight, soil, and carbon dioxide, yes, you can.