Jesus Christ’s parables are meant to teach those who are spiritually in tune with his underlying spiritual message. Scholars will never attain this level because they seek a learned level, they are not seeking a spiritual level or asking to be fed spiritually.
Paul would have hooted at this notion. Yes even scholars are saved by grace through faith.
The scholars should know the historical context, customs and in this case the agricultural and forestry of the time.
When exegesis is used fully, and not partially, the end product is usually solid.
One of the earlier theologians and teachers John Gill was very good at this.