This isn't the case with the seeds of the kingdom of God. Look at this verse:
Jesus said, "What is the kingdom of God like, and to what shall I compare it? It is like a mustard seed, which a man took and threw into his own garden; and it grew and became a tree; and the birds of the air nested in its branches."
Luke 13:18-19
The seed sower just threw the seed into his garden and very likely forgot about it.
But that kingdom seed sprouted and grew into a tree! A tiny seemingly insignificant seed planted on the run became a tree!
This gives me comfort for sometimes my kingdom seed plantiing seems haphazard and not effective or whatnot -- but God takes any seed we plant and does something with it.