'Mustard' in the Bible

It is like a mustard seed, which a man took and planted in his own garden; and it grew and became a tree, and the birds of the sky found shelter and nested in its branches.”

And the Lord said, “If you have [confident, abiding] faith in God [even as small] as a mustard seed, you could say to this mulberry tree [which has very strong roots], ‘Be pulled up by the roots and be planted in the sea’; and [if the request was in agreement with the will of God] it would have obeyed you.