---
product_id: 326352756
title: "Petramax Liquid Nitrogen Fertilizer 28-0-0 NPK - 1 Gallon Spring & Summer Liquid Grass Fertilizer for Lawn, Spray on Easy to Apply for Deep Green Lawn Care - Slow Release High Nitrogen Turf Builder"
brand: "petra"
price: "815.54 DT"
currency: TND
in_stock: true
reviews_count: 13
category: "Petra"
url: https://www.desertcart.tn/products/326352756-petramax-liquid-nitrogen-fertilizer-28-0-0-npk-1-gallon
store_origin: TN
region: Tunisia
---

# 70% quick + 30% slow release N 28% ultra-high nitrogen boost 1 gallon easy spray application Petramax Liquid Nitrogen Fertilizer 28-0-0 NPK - 1 Gallon Spring & Summer Liquid Grass Fertilizer for Lawn, Spray on Easy to Apply for Deep Green Lawn Care - Slow Release High Nitrogen Turf Builder

**Brand:** petra
**Price:** 815.54 DT
**Availability:** ✅ In Stock

## Summary

> 🌿 Turn heads with the greenest lawn on the block—fast, easy, and built to last!

## Quick Answers

- **What is this?** Petramax Liquid Nitrogen Fertilizer 28-0-0 NPK - 1 Gallon Spring & Summer Liquid Grass Fertilizer for Lawn, Spray on Easy to Apply for Deep Green Lawn Care - Slow Release High Nitrogen Turf Builder by petra
- **How much does it cost?** 815.54 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/326352756-petramax-liquid-nitrogen-fertilizer-28-0-0-npk-1-gallon)

## Best For

- petra enthusiasts

## Why This Product

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

## Key Features

- • **Rapid Green-Up Power:** Ultra-high 28% nitrogen formula transforms yellow, tired lawns into lush, vibrant green in just days.
- • **Effortless Application:** Mix and spray with ease—treats up to 25,600 sq. ft. for maintenance or 12,800 sq. ft. for nitrogen-deficient lawns.
- • **Trusted American Quality:** Family-owned USA brand with 100% satisfaction guarantee and dedicated customer support for peace of mind.
- • **Dual-Action Nitrogen Release:** 70% quick-release for instant growth + 30% slow-release for sustained lawn health between feedings.
- • **Universal Grass Compatibility:** Perfect for all grass types—warm or cool season—ensuring consistent, thick turf no matter your lawn.

## Overview

Petramax Liquid Nitrogen Fertilizer delivers a potent 28-0-0 NPK formula with advanced 2-in-1 quick and slow nitrogen release technology, designed to rapidly green and thicken all grass types. This 1-gallon liquid concentrate is easy to apply via spray, covering up to 25,600 sq. ft. for maintenance or 12,800 sq. ft. for nitrogen-deficient lawns. Proudly made by a family-owned USA company, it guarantees professional-grade lawn care with sustained growth and vibrant color all season long.

## Description

desertcart.com : Petramax Liquid Nitrogen Fertilizer 28-0-0 NPK - 1 Gallon Spring & Summer Liquid Grass Fertilizer for Lawn, Spray on Easy to Apply for Deep Green Lawn Care - Slow Release High Nitrogen Turf Builder : Patio, Lawn & Garden

Review: Wow. - Look if you're using iron but you're not using nitrogen you're kinda wasting your time. It's gotta be both. This stuff worked great for me. A noticable difference just with the first 24 hours (which means I definitely had a nitrogen deficiency). If you apply it but don't water the daylights out of the lawn for the first week you're not going to see growth or color improvement. Water grows grass better than anything. You can't just spray nitrogen on the lawn then water for 15 minutes every other day and expect growth. You can't just put down nitrogen and never put iron and expect a huge improvement. In the high desert of Colorado if you're watering for less than 30 minutes daily you're really just wasting water because the water you are applying never makes it to the roots and just cooks off. Big drinks less often are better than tiny drinks more frequently. If you're going to water every other day or every two days it's gotta be 30-60 minutes, or more specifically 3/4"-1" of rainfall per week. Anything less and you're just "keeping it alive", you're not gaining ground. If you use this product as directed and a healthy water regimen you will absolutely notice a difference. Grass is very difficult to grow here and this product will absolutely become a regular application for me.
Review: Great deal - Great price and good product

## Features

- ULTIMATE LIQUID NITROGEN FERTILIZER: This liquid lawn food supplement has an ultra-high nitrogen formula to promote green grass and quick growth. Easily turn yellow & nitrogen deficient grass into a lush thick green!
- 28-0-0 QUICK & SLOW RELEASE TECHNOLOGY: This 2-in-1 liquid lawn fertilizer formula provides 70% quick-release nitrogen for rapid green and growth and 30% slow-release nitrogen for ongoing growth between applications.Get the best of both worlds in 1 easy application.
- WORKS WITH ALL GRASS TYPES: Whether you have warm- or cold-season grass, this is the perfect liquid grass food for quick green-up. It's super-effective in making your lawn green and to achieve consistent growth. Ideal for both new and old lawns.
- Apply Nitrogen to Your Lawn Quickly: PetraTools created our NPK lawn booster to be simple and easy to use. Mix 5oz of liquid nitrogen per gallon of water for maintenance or 10 oz per gallon to correct nitrogen levels. Treats up to 25,600 Sq. Ft. for maintenance or 12,800 Sq. Ft. of nitrogen deficient grass. For best results, use a PetraTools sprayer to evenly spray mixture across lawn.
- American Family-Owned Company & USA Support: PetraTools is a USA-based company located in Carlisle, Pennsylvania. All PetraTools products have a 100% satisfaction guarantee and excellent USA customer service members waiting by the phones to answer any questions you may have. PetraTools continues to work hard to deliver top-quality sprayers & solutions to keep your home, lawn, and places of business clean, green, and safe.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B095BP65VY |
| Best Sellers Rank | #26,018 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #899 in Garden Fertilizers |
| Brand | Petra |
| Customer Reviews | 4.4 4.4 out of 5 stars (889) |
| Item Form | Liquid |
| Item Weight | 5 ounces |
| Item model number | 28-0-0-1Gallon |
| Liquid Volume | 128 Fluid Ounces |
| Manufacturer | Petra |
| Number of Items | 1 |
| Package Dimensions | 10.59 x 7.2 x 4.84 inches |
| Specific Uses For Product | Lawn,Lawns |
| UPC | 850029123408 |
| Unit Count | 128.0 Fluid Ounces |

## Product Details

- **Brand:** Petra
- **Item Form:** Liquid
- **Item Weight:** 5 Ounces
- **Liquid Volume:** 128 Fluid Ounces
- **Specific Uses For Product:** Lawn,Lawns

## Images

![Petramax Liquid Nitrogen Fertilizer 28-0-0 NPK - 1 Gallon Spring & Summer Liquid Grass Fertilizer for Lawn, Spray on Easy to Apply for Deep Green Lawn Care - Slow Release High Nitrogen Turf Builder - Image 1](https://m.media-amazon.com/images/I/81l+IUfYfEL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Wow.
*by J***. on August 5, 2024*

Look if you're using iron but you're not using nitrogen you're kinda wasting your time. It's gotta be both. This stuff worked great for me. A noticable difference just with the first 24 hours (which means I definitely had a nitrogen deficiency). If you apply it but don't water the daylights out of the lawn for the first week you're not going to see growth or color improvement. Water grows grass better than anything. You can't just spray nitrogen on the lawn then water for 15 minutes every other day and expect growth. You can't just put down nitrogen and never put iron and expect a huge improvement. In the high desert of Colorado if you're watering for less than 30 minutes daily you're really just wasting water because the water you are applying never makes it to the roots and just cooks off. Big drinks less often are better than tiny drinks more frequently. If you're going to water every other day or every two days it's gotta be 30-60 minutes, or more specifically 3/4"-1" of rainfall per week. Anything less and you're just "keeping it alive", you're not gaining ground. If you use this product as directed and a healthy water regimen you will absolutely notice a difference. Grass is very difficult to grow here and this product will absolutely become a regular application for me.

### ⭐⭐⭐⭐⭐ Great deal
*by J***S on February 4, 2026*

Great price and good product

### ⭐⭐⭐⭐ Expensive but worth it.
*by G***T on November 4, 2024*

Surprised at the small quantity. It is also expensive. But don't be fooled by either. This works really well. A single application made my lawn looking from dismal to good. A second application made it very good. What's the point in buying large quantity of something that's cheap but works mediocre at best? I would buy this again next season.

## Frequently Bought Together

- Petramax Liquid Nitrogen Fertilizer 28-0-0 NPK - 1 Gallon Spring & Summer Liquid Grass Fertilizer for Lawn, Spray on Easy to Apply for Deep Green Lawn Care - Slow Release High Nitrogen Turf Builder
- PetraTools Liquid Iron For Lawns - Chelated Iron, Liquid Iron for Plants, Liquid Lawn Fertilizer Concentrate Solutions, Chelated Iron for Plants, Lawn Iron Formula, EDTA-Free & Made In The USA (1 Gal)

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.tn/products/326352756-petramax-liquid-nitrogen-fertilizer-28-0-0-npk-1-gallon](https://www.desertcart.tn/products/326352756-petramax-liquid-nitrogen-fertilizer-28-0-0-npk-1-gallon)

---

*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-03-13*