Luke 13:6Then Jesus told this parable: “A man had a fig tree that was planted in his vineyard. He went to look for fruit on it, but did not find any. 7So he said to the keeper of the vineyard, ‘Look, for the past three years I have come to search for fruit on this fig tree and haven’t found any. Therefore cut it down! Why should it use up the soil?’ 8‘Sir,’ the man replied, ‘leave it alone again this year, until I dig around it and fertilize it.…

I planted an acorn squash tree a long time ago and it never had any fruit – finally – this year.