Search  for anything...
Mammoth

Mammoth Organic Bloom Booster | Mammoth P Organic Fertilizer Microbial Inoculant | 16% Proven Increase in Yield | University Developed and Growers Approved (250 ml)

    • Based on 564 reviews
Condition: New
Checking for product changes
$54.00 Why this price?

Buy Now, Pay Later

As low as $9.00 / mo
  • – 6-month term
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout. Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Free shipping on this product

This item is eligible for return within 30 days of receipt

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

Availability: In Stock.
Fulfilled by MAMMOTH MICROBES
Arrives Monday, Nov 25
Order within 5 hours and 53 minutes
Available payment plans shown during checkout

Features

  • ORGANICALLY DERIVED MICROBIAL INOCULANT: Utilizing natural beneficial soil bacteria and microorganisms to liberate phosphorus and plant nutrients. This results in more efficient use of fertilizer and soil nutrients by plants to maximize bud growth, increase yield, and enhance plant health.
  • UNIVERSITY TESTED AND DEVELOPED: MAMMOTH P Bloom Booster was developed by Growcentias founders at a leading US university using next-generation technology. Rigorously tested by Colorado growers, and proven to increase plant growth by independent labs.
  • CONTAINS BENEFICIAL BACTERIA: Beneficial bacteria act like micro bioreactors! Live microbes release bound phosphorus in soil and other growing media 30x better than the average soil and continually produce enzymes that release nutrients reducing the need for a separate enzyme additive.
  • GROW BIGGER BUDS WITH P: A microbial biostimulant that unlocks and converts phosphorus into soluble forms for plants to easily take up through their roots. Increased levels of phosphorus keep internodes shorter and focuses energy on bud production. 16% increased average yield. 6% increased stem strength.
  • SAFE FOR USE IN SOIL, SOILLESS AND HYDROPONIC SYSTEMS: Great to use in soil, coco, rockwool, hydroponic systems, and any growing media. Fully compatible for use for use as supplement in any plant fertilizer program.

Brand: Mammoth P


Item Weight: 8 Ounces


Item Form: Liquid


Coverage: Full


Liquid Volume: 0.25 Liters


Is Discontinued By Manufacturer ‏ : ‎ No


Product Dimensions ‏ : ‎ 0.01 x 0.01 x 0.01 inches; 8 Ounces


Item model number ‏ : ‎ 250 ML


Date First Available ‏ : ‎ February 24, 2016


Manufacturer ‏ : ‎ Mammoth P


Best Sellers Rank: #76,904 in Patio, Lawn & Garden (See Top 100 in Patio, Lawn & Garden) #1,695 in Garden Fertilizers


#1,695 in Garden Fertilizers:


Customer Reviews: 4.7 4.7 out of 5 stars 564 ratings


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Nov 25

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Overnite availability was huge plus
Got it next day and plants loved it.
Reviewed in the United States on July 15, 2023 by JEFFERY K HUNTER
    • Mammoth P is king!
Microbes are soooo important to plant health and Mammoth P delivers in spades! Worth every penny!
Reviewed in the United States on July 4, 2023 by Bill W.
    • Sold as set?
This single unit came labeled ”sold as a set, do not separate.” Perhaps that’s just standard company practice but I’m hoping the bottle isn’t diluted in someway, being that it’s the smallest size. Seal looks legit though. Maybe I’m just paranoid lol I like to have confidence in what goes into my garden. ... show more
Reviewed in the United States on April 30, 2023 by Michael
    • This stuff just works.
Worth every penny. Easy to use and 250ml bottle lasts if you don’t have a large garden.
Reviewed in the United States on April 14, 2023 by Bob Rutkowski
    • All bottles have black rock like pieces
My local hydro have this and no black mold like substance in it. So not sure if i should be using it
Reviewed in the United States on December 2, 2022 by Kratos
    • You get what you pay for
Review Image by Austin blair Austin blair
I like this product. Never ran a side by side without it, but always get great results using it!
Reviewed in the United States on August 2, 2022 by Austin blair Austin blair
    • If you are into growing and are like me you are always looking to improve
If you are into growing and are like me you are always looking to improve. I bought this product after seeing so many good reviews. I went through about 90% of the bottle during a flowering period lasting 10 weeks (4 plants). I am not quite sure what to think yet. I was a little neglectful during this round, but I credit the use of this product to helping my plants survive. In the end they smelled delicious, and density was increased as was growth. I believe the price has increased since my original order, so I am holding off on my next order. You dont need to use much, but if you have multiple plants that little usage can add up very quickly. ... show more
Reviewed in the United States on May 1, 2018 by Rumplestiltskin
    • Consistency is key 🗝!
Over time you definitely see Improvement in your bud size by using this. You must be consistent, at least the entire bloom cycle. I use through veg and bloom to keep my plant strong and bountiful. This item is pretty expensive which is why I must take away at least a star.
Reviewed in the United States on November 19, 2020 by J. I. Dean

Can't find a product?

Find it on Amazon first, then paste the link below.