Adding well-decomposed compost enriches the soil with organic matter and nitrogen, improving soil structure and fertility.

Incorporating aged animal manure, such as cow or chicken manure, boosts nitrogen levels and provides essential nutrients.

This high-nitrogen organic fertilizer, derived from animal blood, provides a quick nitrogen boost to the soil.

Used coffee grounds are a great source of nitrogen and can be mixed into the soil or added to compost.

This liquid fertilizer, made from fish byproducts, is rich in nitrogen and beneficial for quick nutrient uptake.

A natural fertilizer high in nitrogen, alfalfa meal also contains other essential nutrients and improves soil health.

Using fresh grass clippings as mulch or compost material adds nitrogen to the soil as they break down.