---
product_id: 741394559
title: "Overdrive - Best Flower Hardener - 1 L"
brand: "advanced nutrients"
price: "€ 144.58"
currency: EUR
in_stock: true
reviews_count: 5
category: "Advanced Nutrients"
url: https://www.desertcart.gr/products/741394559-overdrive-best-flower-hardener-1-l
store_origin: GR
region: Greece
---

# Optimized phosphorus & magnesium boost NPK 1-5-4 for flower hardening 1L premium liquid formula Overdrive - Best Flower Hardener - 1 L

**Brand:** advanced nutrients
**Price:** € 144.58
**Availability:** ✅ In Stock

## Summary

> 🌿 Harden your harvest, elevate your garden game!

## Quick Answers

- **What is this?** Overdrive - Best Flower Hardener - 1 L by advanced nutrients
- **How much does it cost?** € 144.58 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/741394559-overdrive-best-flower-hardener-1-l)

## Best For

- advanced nutrients enthusiasts

## Why This Product

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

## Key Features

- • **Finish Strong:** Engineered to maintain peak plant performance right through to harvest.
- • **Trusted by Experts:** 4.8-star rating from 144 reviews proves growers never switch brands.
- • **Maximize Bud Density:** Scientifically balanced NPK ratio (1-5-4) to bulk up your flowers like a pro.
- • **Energy-Boosting Minerals:** Phosphorus and magnesium catalyze energy transfer for peak flower maturation.
- • **Liquid Precision Feeding:** Easy-to-mix 1L liquid formula ensures consistent nutrient delivery every time.

## Overview

Advanced Nutrients Overdrive is a 1-liter liquid flower hardener with a precise 1-5-4 NPK ratio, enriched with phosphorus and magnesium to optimize energy transfer and maximize bud density. Trusted by professional growers for consistent, peak flower maturation and growth.

## Description

With an NPK ratio of 1-5-4, this premium bud hardener invites your garden to maintain peak performance all the way to the finish line. Our team of scientists engineered Overdrive with ideal amounts of phosphorus and magnesium to create the optimal conditions for catalyzing energy transfers within your plants, so they’ve got ample opportunity to bulk up your buds before flush.

Review: Will never switch nutrients brand
Review: Love these nutrients.

## Features

- Brand: Advanced Nutrients
- Item form: Liquid
- Specific uses for product: Plant Growth, Flower Maturation, Flower Growth
- Target species: plants

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BBQ8XFY5 |
| Brand | Advanced Nutrients |
| Brand Name | Advanced Nutrients |
| Coverage | Full |
| Customer Reviews | 4.8 out of 5 stars 144 Reviews |
| Item Form | Liquid |
| Item Type Name | Overdrive |
| Item Weight | 2.43 Pounds |
| Item form | Liquid |
| Item weight | 2.43 Pounds |
| Liquid Volume | 1 Liters |
| Liquid volume | 1 Liters |
| Manufacturer | Advanced Nutrients LLC |
| Mixing Ratio | 2 ml per 1 liter |
| Model Number | 4750904 |
| Specific Uses For Product | Plant Growth, Flower Maturation, Flower Growth |
| Specific uses for product | Plant Growth, Flower Maturation, Flower Growth |
| Target Species | plants |
| UPC | 845268001259 |
| Unit Count | 33.8 Milliliters |

## Product Details

- **Brand:** Advanced Nutrients
- **Item form:** Liquid
- **Item weight:** 2.43 Pounds
- **Liquid volume:** 1 Liters
- **Specific uses for product:** Plant Growth, Flower Maturation, Flower Growth

## Images

![Overdrive - Best Flower Hardener - 1 L - Image 1](https://m.media-amazon.com/images/I/51ducyfpM3L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Will never switch nutrients brand
*by D***B on 8 June 2025*



### ⭐⭐⭐⭐⭐ Love these nutrients.
*by T***. on 14 October 2025*



### ⭐⭐⭐⭐⭐ this really does effect bud size
*by J***O on 19 August 2025*



## Frequently Bought Together

- Advanced Nutrients Overdrive - Best Flower Hardener - 1 L
- Xcdiscount B-52 Fertilizantes Booster, 1L
- Advanced Nutrients Big Bud Liquid Fertilizer, 1-Liter

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**Shop now:** [https://www.desertcart.gr/products/741394559-overdrive-best-flower-hardener-1-l](https://www.desertcart.gr/products/741394559-overdrive-best-flower-hardener-1-l)

---

*Product available on Desertcart Greece*
*Store origin: GR*
*Last updated: 2026-04-23*