This verse combines some of the vocabulary from the previous verse with the vocabulary from Matthew 13:5. In the Greek, the first part of this verse refers to the seed, while the later part refers to the one "getting" it. The "getting it" is the punchline, the last words in the verse. It works a lot like our "getting it" refers both to receiving something and comprehending something.
Christ's Words in Matthew as a Guide to 40 Days of Prayer.