A fertile land or area has good quality soil that can support plant growth. It's like a garden that produces a lot of flowers and fruits.
When we talk about something being fertile, we often think about natural areas like forests or fields, but it can also apply to people or relationships. For example, if you're in a fertile period in your life, you might be feeling creative and inspired, or you could be in a happy relationship that's producing new experiences together. Some people even say that a business is fertile ground for innovation, meaning it has potential for growth and new ideas.
(of land etc) capable of growing abundant crops; productive
