So, what kind of soil would you be considered to be? Whoever has ears to hear, let them hear (v. 8).
While a large crowd was gathering and people were coming to Jesus from town after town, he told this parable: “A farmer went out to sow his seed. As he was scattering the seed, some fell along the path; it was trampled on, and the birds ate it up. Some fell on rocky ground, and when it came up, the plants withered because they had no moisture. Other seed fell among thorns, which grew up with it and choked the plants. Still other seed fell on good soil. It came up and yielded a crop, a hundred times more than was sown.”
When he said this, he called out, “Whoever has ears to hear, let them hear.”
His disciples asked him what this parable meant. He said, “The knowledge of the secrets of the kingdom of God has been given to you, but to others I speak in parables, so that, though seeing, they may not see; though hearing, they may not understand. Luke 8:4-10 (NIV)
If you want the explanation, check out Luke 8:11-15.