I planted some mustard seeds a few years ago, because I wanted to see how they grow.
When Jesus explained the parable of the sower, He said this:
Luke 8:11 Now the parable is this: The seed is the word of God. When we read the word, and hear the word, a seed is planted.
I know that when I planted those mustard seeds the ground had to be prepared, rocks and other debris had to be removed and the soil had to be broken up. (plowed).
Natural seeds need water, so do spiritual seeds.
John 4:10 Jesus answered and said unto her, If thou knewest the gift of God, and who it is that saith to thee, Give me to drink; thou wouldest have asked of him, and he would have given thee living water.
Natural seeds need light, so do spiritual seeds.
John 8:12 Then spake Jesus again unto them, saying, I am the light of the world: he that followeth me shall not walk in darkness, but shall have the light of life.
Natural seeds sometimes need fertilizer. So do spiritual seeds.
Luke 13:6 He spake also this parable; A certain man had a fig tree planted in his vineyard; and he came and sought fruit thereon, and found none.
Luke 13:7 Then said he unto the dresser of his vineyard, Behold, these three years I come seeking fruit on this fig tree, and find none: cut it down; why cumbereth it the ground?
Luke 13:8 And he answering said unto him, Lord, let it alone this year also, till I shall dig about it, and dung it:
Luke 13:9 And if it bear fruit, well: and if not, then after that thou shalt cut it down.
1 Corinthians 3:6 I have planted, Apollos watered; but God gave the increase.