---
product_id: 31545353
title: "Organic Bloom Booster | Mammoth P Organic Fertilizer Microbial Inoculant | 16% Proven Increase in Yield | University Developed and Growers Approved (250 ml)"
price: "€ 78.27"
currency: EUR
in_stock: true
reviews_count: 8
url: https://www.desertcart.hr/products/31545353-organic-bloom-booster-mammoth-p-organic-fertilizer-microbial-inoculant-16
store_origin: HR
region: Croatia
---

# Safe for soil, soilless & hydroponics 16% proven yield increase Beneficial bacteria micro bioreactors Organic Bloom Booster | Mammoth P Organic Fertilizer Microbial Inoculant | 16% Proven Increase in Yield | University Developed and Growers Approved (250 ml)

**Price:** € 78.27
**Availability:** ✅ In Stock

## Summary

> 🌿 Unlock Nature’s Secret to Explosive Growth & Bloom Brilliance!

## Quick Answers

- **What is this?** Organic Bloom Booster | Mammoth P Organic Fertilizer Microbial Inoculant | 16% Proven Increase in Yield | University Developed and Growers Approved (250 ml)
- **How much does it cost?** € 78.27 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/31545353-organic-bloom-booster-mammoth-p-organic-fertilizer-microbial-inoculant-16)

## Best For

- Customers looking for quality international products

## Why This Product

- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Soil & Beyond:** Perfectly safe and effective across soil, soilless, and hydroponic systems.
- • **Microbial Powerhouse:** Harness next-gen beneficial bacteria that unlock locked nutrients naturally.
- • **Scientifically Proven:** University-developed and rigorously tested for consistent 16% yield improvements.
- • **Universally Compatible:** Seamlessly integrates with any fertilizer program for effortless growth boosts.
- • **Flower Stage Game-Changer:** Maximizes phosphorus availability to produce rock-hard buds and sturdy branches.

## Overview

Mammoth Organic Bloom Booster is a 250 ml microbial inoculant fertilizer developed by university researchers and approved by growers. It uses beneficial bacteria acting as micro bioreactors to release locked nutrients, especially phosphorus, enhancing plant growth by 16% on average. Safe for all growing media including soil, soilless, and hydroponics, it integrates easily with any fertilizer program and is ideal for maximizing bloom and yield in organic and living soil setups.

## Description

Product description

Review: THE GAME CHANGER. If you aren’t Growing with this, you’re not growing. - Mammoth P is the most unbelievable product that has touched and blessed the market of cannabis and other plants alike. My plants love this it is like ambrosia to them. They particularly like this during the flower stage when the phosphorus is most needed. Agro with mostly microbial products, and I grow with all organic products. Mammoth P is the way to get those rock hard buds you have been looking for. Hard sturdy branches to hold them up. This is a way to liberate all of the nutrients that have been locked away in your soil, unable to feed your plants. I would not suggest using this and adding another fertilizer with extra phosphorus of any kind as this increases phosphorus so incredibly much. If you are using build a soil or something like that Or are you are a No till living soil grower Honestly, this is the product for you. This really lends itself more towards Soil growing not that hydroponic feeding tube style of growing. The real way to Grow plants has returned lol.
Review: Huge results with this product - Huge blooming and growth when using this product

## Features

- BENEFICIAL BACTERIA Our beneficial bacteria act like micro bioreactors, continually producing enzymes that release nutrients. Reduces the need for a separate enzyme additive.
- PROTECTS RHIZOSPHERE
- SAFE FOR ALL MEDIA Safe for use in soil, soilless, and hydroponic systems.
- FULLY COMPATIBLE For use as a supplement to any fertilizer program.
- UNIVERSITY DEVELOPED Developed by Growcentias founders at a leading US University using next generation technology. Extensively tested by Colorado growers and proven to increase growth by independent labs.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Best Sellers Rank | #230,303 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #3,945 in Garden Fertilizers |
| Customer Reviews | 4.7 out of 5 stars 615 Reviews |

## Images

![Organic Bloom Booster | Mammoth P Organic Fertilizer Microbial Inoculant | 16% Proven Increase in Yield | University Developed and Growers Approved (250 ml) - Image 1](https://m.media-amazon.com/images/I/61mtsp1JoFL.jpg)

## Questions & Answers

**Q: Is Mammoth any different to other beneficial bacteria? There's an awful lot on the market to choose from its finding the best thats the expensive part**
A: Mammoth P is different from other beneficial bacteria because it is one of the first organically derived microbial inoculant that unlocks phosphorus and micronutrients to maximize growth and easily increased yields of 16% and increased stem strength of 6% and improves quality. It also increases the level of phosphorus and keeps internodes shorter and focuses energy on bud production. The beneficial bacteria act like micro bioreactors, continually producing enzymes that release nutrients. It reduces the need for a separate enzyme additive as well as shields the plant rhizosphere by outcompeting potentially harmful pathogenic microbes. This product is is fully compatible with all supplements and any fertilizer program. It is also safe for ALL medias: soil, soilless & hydroponic systems.

**Q: Can you add with other bloom boosters**
A: yes

**Q: Can this be used with trichoderma strains of microbes?**
A: Yes

**Q: Would this work well with tribus microbes?**
A: Works well with anything and everything,  just make sure your not just doubling up the same  types of microbes that would just be throwing money out the window .

## Customer Reviews

### ⭐⭐⭐⭐⭐ THE GAME CHANGER. If you aren’t Growing with this, you’re not growing.
*by T***L on February 27, 2024*

Mammoth P is the most unbelievable product that has touched and blessed the market of cannabis and other plants alike. My plants love this it is like ambrosia to them. They particularly like this during the flower stage when the phosphorus is most needed. Agro with mostly microbial products, and I grow with all organic products. Mammoth P is the way to get those rock hard buds you have been looking for. Hard sturdy branches to hold them up. This is a way to liberate all of the nutrients that have been locked away in your soil, unable to feed your plants. I would not suggest using this and adding another fertilizer with extra phosphorus of any kind as this increases phosphorus so incredibly much. If you are using build a soil or something like that Or are you are a No till living soil grower Honestly, this is the product for you. This really lends itself more towards Soil growing not that hydroponic feeding tube style of growing. The real way to Grow plants has returned lol.

### ⭐⭐⭐⭐⭐ Huge results with this product
*by D***R on January 20, 2026*

Huge blooming and growth when using this product

### ⭐⭐⭐⭐⭐ Staple in our grow.
*by D***N on December 7, 2024*

Mammoth P has become a staple in our grows. Ever since we incorporated Mammoth P into our grows we notice an improvement in the quality and health of our plants. Nutrients can be expensive. M.p. is a product worth the money.

## Frequently Bought Together

- 250ml - Mammoth P
- Canna Coco 1L A&B Bottles Set
- VitaLink 06-251-100 250 ml CalMag

---

## 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.hr/products/31545353-organic-bloom-booster-mammoth-p-organic-fertilizer-microbial-inoculant-16](https://www.desertcart.hr/products/31545353-organic-bloom-booster-mammoth-p-organic-fertilizer-microbial-inoculant-16)

---

*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-03-10*