The Zohar, Chapter “Bo (Come Unto Pharaoh),” Item 57: And He planted that seed in one righteous man, which is Yesod de Zeir Anpin.
I have to imagine that I have this quality – Yesod of Zeir Anpin, which is called a righteous man, and this is where my seed is planted, being the point from which I grow.
He is the garden’s gardener. And the seed in the garden, which is Malchut, is the concealment and hiding of that Light. This means that the concealment is not absence, but on the contrary, it is a seed of blessing. The concealment itself will become Light once more, like a plant that buds from the seed.
In his article, “Freedom of Will,” Baal HaSulam gives this example: We have to try to plant ourselves in a Kabbalistic group like planting a seed in the soil, where we annul ourselves completely before the environment. Then we will become a seed that has to disintegrate completely and “rot” in the soil in order for a tree to grow out of it.