In the Seeds Sutta (SN 22.54), we find there are five kinds of seeds, which can grow, when they are fertile, undamaged and securely planted on the ground with water to nourish them.
Water is delight and lust, or in another translation, relishing and greed.
Earth refers to the four stations of consciousness, or in another translation, four standing-spots of consciousness, i.e. form, feeling, perception and volitional formations.
But what are the five kinds of seeds? This translation of the sutta says "Consciousness together with its nutriment should be seen as like the five kinds of seeds."
What is consciousness together with its nutriment, that forms five kinds of seeds? What five?
In other suttas (e.g. MN 148), there are six kinds of consciousness - related to the six senses (eyes, ears, nose, tongue, body and mind or intellect).
But what are the five in this sutta formed by consciousness and its nutriment?
And what is the nutriment for consciousness? In another translation, this is fuel.