---
product_id: 740464742
title: "12-12-12 Starter Fertilizer with 3% Iron and Bio-Nite - 45lbs Covers 15,000 Square Feet Granular Lawn Fertilizer 12% Ammonium Sulfate, 12% Phosphorous, 12% Potassium with Micronutrients"
brand: "yard mastery"
price: "3988.94 DT"
currency: TND
in_stock: true
reviews_count: 5
category: "Yard Mastery"
url: https://www.desertcart.tn/products/740464742-12-12-12-starter-fertilizer-with-3-iron-and-bio
store_origin: TN
region: Tunisia
---

# Slow release for sustained feeding 12-12-12 balanced NPK formula 3% Iron + micronutrients boost 12-12-12 Starter Fertilizer with 3% Iron and Bio-Nite - 45lbs Covers 15,000 Square Feet Granular Lawn Fertilizer 12% Ammonium Sulfate, 12% Phosphorous, 12% Potassium with Micronutrients

**Brand:** yard mastery
**Price:** 3988.94 DT
**Availability:** ✅ In Stock

## Summary

> 🌿 Unlock the secret to envy-worthy lawns with every granule!

## Quick Answers

- **What is this?** 12-12-12 Starter Fertilizer with 3% Iron and Bio-Nite - 45lbs Covers 15,000 Square Feet Granular Lawn Fertilizer 12% Ammonium Sulfate, 12% Phosphorous, 12% Potassium with Micronutrients by yard mastery
- **How much does it cost?** 3988.94 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/740464742-12-12-12-starter-fertilizer-with-3-iron-and-bio)

## Best For

- yard mastery enthusiasts

## Why This Product

- Trusted yard mastery brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Seed Starter Excellence:** Optimized for new lawns with superior seed germination and early growth support
- • **Iron-Enriched Green Boost:** 3% Iron plus essential micronutrients for deep, rich green color and stronger roots
- • **Long-Lasting Growth Power:** Advanced slow-release formula feeds your lawn over time, reducing reapplications
- • **Perfectly Balanced Nutrition:** 12% Nitrogen, Phosphorus & Potassium for lush, vibrant lawns
- • **Versatile & Easy Application:** Granular, water-soluble formula covers 15,000 sq ft for professional-grade lawn care

## Overview

Yard Mastery's 12-12-12 Starter Fertilizer is a premium granular lawn food designed to deliver balanced nutrients with 12% each of nitrogen, phosphorus, and potassium, enhanced by 3% iron and vital micronutrients. Its slow-release formula ensures sustained feeding, promoting vigorous growth and deep green color across up to 15,000 square feet. Ideal for new seedings and all-season lawn care, this fertilizer supports robust root development and overall turf vitality, making it a top choice for both amateur and professional lawn enthusiasts.

## Description

Introducing our premium All Purpose Fertilizer, a water soluble fertilizer designed to meet the varied needs of your lawn. Crafted with precision, this formulation ensures greener grass and lush landscapes, making it an ideal choice for both novice gardeners and seasoned yard mastery enthusiasts. As a versatile grass fertilizer, it caters to green grass lovers and is perfect as a starter fertilizer for newly seeded lawns or as a seedling fertilizer for young plants. Our fertilizer is engineered to deliver the essential nutrients required for complete lawn care. It acts as a potent lawn fertilizer, enriched with nitrogen fertilizer components, including urea fertilizer, to promote vigorous grass growth. The inclusion of phosphorus and potassium fertilizers enhances root development and overall plant health, ensuring your lawn becomes a showcase of vitality. For lawn enthusiasts, this product excels as a lawn fertilizer and weed control solution, offering a balanced approach to spring, summer, and fall lawn applications. Transform your outdoor spaces with our All Purpose Fertilizer and witness the difference in your turf builder projects and overall lawn food quality. Elevate your lawn care with our trusted product, synonymous with greener grass and enhanced garden vitality.

Review: great product. yard and seeding looks great Good value for money. Comes up in approximately ten days
Review: Best stuff for beginning is season or if you just want a green lawn! I won’t buy anything else. Great price too!

## Features

- Premium Lawn Fertilizer: Our lawn fertilizer provides a balanced nutrient mix tailored for lush, healthy lawns. Enriched with nitrogen fertilizer, it supports robust growth and vibrant green grass. Ideal for all-purpose lawn care, ensuring your lawn stays healthy year-round.
- Advanced Slow Release Formula: This slow release fertilizer offers prolonged nutrient delivery, reducing the need for frequent applications. As a top-tier npk fertilizer, it ensures nutrients are available when your lawn needs them most, promoting sustainable growth and enhanced lawn vitality.
- Efficient Seed Starter Mix: Designed for optimal seed germination, our seed starter mix is perfect for new lawns. It complements grass fertilizer for lawn use, establishing a firm foundation for greener grass. Ideal for both amateur and professional lawn care enthusiasts seeking superior results.
- Versatile Water Soluble Fertilizer: This water soluble fertilizer is suitable for diverse lawn needs, offering flexibility in application. As an all purpose fertilizer, it dissolves easily, ensuring even distribution and immediate nutrient absorption, resulting in healthier, more resilient outdoor plant food.
- Comprehensive Lawn Care Solution: Our lawn fertilizer includes essential plant food outdoor, providing a complete lawn care package. It acts as an effective grass fertilizer, enhancing root development and promoting vigorous growth, ensuring your lawn remains the envy of the neighborhood.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BK9Y2S6V |
| Brand Name | Yard Mastery |
| Coverage | 6,000 square feet (for 18 lbs bag) or 15,000 45 |
| Customer Reviews | 4.6 4.6 out of 5 stars (57) |
| Item Form | Granules |
| Item Weight | 18 Pounds |
| Manufacturer | Yard Mastery |
| Mixing Ratio | 1:1:1 |
| Model Number | 12-12-12 |
| Number of Items | 1 |
| Part Number | YM121212-45 |
| Specific Uses For Product | Lawn Fertilizer |
| Target Species | lawn grasses |
| Unit Count | 720.0 Grams |

## Product Details

- **Brand:** Yard Mastery
- **Item form:** Granules
- **Item weight:** 18 Pounds
- **Manufacturer:** Yard Mastery
- **Specific uses for product:** Lawn Fertilizer

## Images

![12-12-12 Starter Fertilizer with 3% Iron and Bio-Nite - 45lbs Covers 15,000 Square Feet Granular Lawn Fertilizer 12% Ammonium Sulfate, 12% Phosphorous, 12% Potassium with Micronutrients - Image 1](https://m.media-amazon.com/images/I/61E-MiL-fkL.jpg)
![12-12-12 Starter Fertilizer with 3% Iron and Bio-Nite - 45lbs Covers 15,000 Square Feet Granular Lawn Fertilizer 12% Ammonium Sulfate, 12% Phosphorous, 12% Potassium with Micronutrients - Image 2](https://m.media-amazon.com/images/I/71JqpX26z6L.jpg)

## Available Options

This product comes in different **Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by A***R on 15 October 2025*

great product. yard and seeding looks great Good value for money. Comes up in approximately ten days

### ⭐⭐⭐⭐⭐ Review
*by J***E on 22 September 2025*

Best stuff for beginning is season or if you just want a green lawn! I won’t buy anything else. Great price too!

### ⭐⭐⭐⭐⭐ Review
*by P***A on 15 March 2024*

I used this balanced fert while seeding rye on a large backyard renovation in progress. The ryegrass was just for getting cover and roots in the ground until temps warm up and I can plug zoysia for my permanent lawn. I spread the fert and then cultivated this and several other ‘test areas’ before seeding to get absorption into the seed bed and then watered it all in. I had germination in a week and 3-4” tall rye within 15 days. The photo doesn’t do it justice because my first cut was yesterday. I got great results and the rye is a rich dark green. I seeded at 2x so it’s nice and thick too.

## Frequently Bought Together

- 12-12-12 Starter Fertilizer with 3% Iron and Bio-Nite - 45lbs Covers 15,000 Square Feet Granular Lawn Fertilizer 12% Ammonium Sulfate, 12% Phosphorous, 12% Potassium with Micronutrients
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**Shop now:** [https://www.desertcart.tn/products/740464742-12-12-12-starter-fertilizer-with-3-iron-and-bio](https://www.desertcart.tn/products/740464742-12-12-12-starter-fertilizer-with-3-iron-and-bio)

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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-07-08*