Luke indicated that Jesus said that those seeds that fell among the thorns (τὸ δὲ εἰς τὰς ἀκάνθας πεσόν) were like the ones who hear the word (οὗτοί εἰσιν οἱ ἀκούσαντες), but as they go on their way (πορευόμενοι), they are choked or crowded out (συνπνίγονται) by the cares (καὶ ὑπὸ μεριμνῶν), the riches (καὶ πλούτου), and the pleasures of life (καὶ ἡδονῶν τοῦ βίου). Their fruit does not mature (καὶ οὐ τελεσφοροῦσιν). This explanation about the seeds among the thorns can be found in all 3 synoptic gospels, Mark, chapter 4:18-19, Matthew, chapter 13:22, and here, with Matthew closer to Mark. Both Matthew and Mark said that the seeds sown among the thorns were the ones who heard the words of the kingdom, but the cares and anxiety of this present age, as well as the allure or deceit of material wealth, choked or crowded out the words. Thus, it yielded nothing, because it was barren. The thorns were the cares about physical riches that choked off the growth of the seeds or the words of the kingdom. There had to be good circumstances or pre-depositions to hearing and understanding for the word or the seed to be effective. There had to be follow up or acting out on the word for it to mature into a full mature faith belief in Jesus Christ. Have the seeds of the word of God matured in you?
This saying is unique to Luke. He was the only one of the gospel writers who put an age on Jesus. He said that Jesus was about 30 years old when he began his work (Καὶ αὐτὸς ἦν Ἰησοῦς ἀρχόμενος ὡσεὶ ἐτῶν τριάκοντα). Perhaps this is an allusion to King David who was 30 when he became king in 2 Samuel, chapter 5:4. For some the age of 30 was considered mature. Anyway, this concept of Jesus being about 30 with a 3-year public ministry put his death at age 33, a common Christian tradition.
The northern Israelites were in a unique position. They would sow with the wind, but it suddenly would become a whirlwind. The planted grain would never mature in the field, since there would be no heads of grain. Therefore, there would be no harvesting of the grain for meals. Even if it yielded any grain, foreigners, and not them, would devour it, because of the invasion of the Assyrians.