Mammoth Organic Bloom Booster | Mammoth P Organic Fertilizer Microbial Inoculant | 16% Proven Increase in Yield | University Developed and Growers Approved 1 Liter


  • 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 Growcentia’s 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.

Free Shipping rates apply to the lower 48 contiguous states. Contact Us to get shipping cost to your area if not in the lower 48 states before purchase.

We ship all items discreetly
Whether you are a novice gardener or a mad scientist in the greenhouse, you will find a plethora of inventory and knowledge at the Spokane Organic & Hydroponic Supply centers. Our first store opened its doors in 2006 when Paul and mother Susan, both avid and life-long gardeners, joined together to share their passion and gardening experiences with the Spokane community. In 2010, Susan moved on to pursue other endeavors while Paul continued to expand the business.
Each of our two stores employ experienced staff members with traditional garden expertise and modern industry knowledge. With real-life experiences, our plant experts know the challenges of outdoor and year-round gardening and strive to help customers eliminate avoidable mistakes. Our alternative and earth friendly stores we have created will leave you with a sense of empowerment to develop your own efficient methods of growing and caring for plants. We look forward to your visit and hearing the plant stories you have to share with us!

We ship daily Monday - Friday. All orders will be shipped within 3 to 5 working days. Most will go within 24 hours. You will automatically receive a tracking # via email once we have shipped your order.
All domestic orders will be shipped by UPS, Fedex ground, USPS priority mail or USPS ground. If you need to use a special carrier i.e. PO BOX w/ USPS, please email us and let us know.
We will only ship to the address provided during payment.
We are not responsible for any packages that are lost or damaged if insurance is not purchased.
Shipping and handling rate is fixed and non-refundable.
Free Shipping rates apply to 48 contiguous United States.
Contact us for shipping cost to your area.
No returns
No returns are accepted on any nutrients and fertilizers
Be sure the item is what you want because of the no return policy 
Pictures may be different then product sold
We ship all items discreetly

Satisfaction :
Discreetly labeled, Professionally packaged, shipped as fast as possible with care read the feedback for proof. Our prices are competitive but the service is Priceless! We know how to ship liquids with no leaks and 100% satisfaction guaranteed.
Your satisfaction is very important to us! If you have any problem with your order, please do not leave negative comments.
Please Contact us ... we will help you out!
In the unlikely event that the item is sold out from our stock or on back order, we will contact you to see if you want to wait a few days or we will refund 100% of your money. YOUR choice.

Occasionally items sell from our brick and mortar store front before we are able to pull down our listing or adjust quantities. We try our best to fulfill these orders in a timely manner if possible. These cases are very rare, we will let you know as soon as possible and refund your money.