Use steel (non-galvanized) nails for best results. Avoid anything coated or painted.

Pair it with coffee grounds for an even richer soil mix — coffee adds magnesium and nitrogen.

Let the banana sit for 10–20 minutes with the nails before burying it, or just bury the whole thing and let nature do the rest.

Other Natural Fertilizer Ideas

Banana peel powder: Dry and blend banana peels into a powder to sprinkle around your plants.

Used coffee grounds: Packed with calcium, potassium, and magnesium.

Eggshells: Crushed and added to soil for calcium.