Just three or four plants can supply a family of four with a nice weekly harvest. You don't even need a backyard and I don't have one. If I did I would be growing for the whole neighborhood and having salad parties on the weekend. kale grows great in containers. It takes a hot minute to grow Kale it can be done with patience. It can take 55 to 75 days if growing from seed. I prefer to buy ready made babies. I spotted a yellow leave so time to harvest and give the plant more time to use it energy to grow a new one.