The least of all seeds. — The description is, of course, popular, and need not be pressed with micro scopical exactness.
The greatest among herbs. — More literally, greater than the herbs — i.e., belonging to a higher order of vegetation.
Related Commentaries of Matthew 13:32
Matthew 13:32
32 Which indeed is the least of all seeds: but when it is grown, it is the greatest among herbs, and becometh a tree, so that the birds of the air come and lodge in the branches thereof.