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The family of ULTRA Biostimulants are certified for use in Organic Farming! Our trial-proven plant biostimulant increases the growth rate of plants and are developed for use in agricultural enterprises as well as home gardens. The complex proprietary formula of ULTRA Biostimulants is the result of decades long research and trials of various crops, in various climates and across a variety of soil types. Working directly with farmers and growers our products are developed as an answer to the pursuit of finding a natural solution for growing larger harvests.

Agents for Sustainable Agriculture


Our mission at Natural Growth Biostimulant, LLC is to reduce the use of synthetic materials in agriculture affecting the ground, aquifer, and waterways.


ULTRA Biostimulants are organically derived microbial inoculants, which in combination with good farm practices, deliver a highly effective solution for agriculture, forestry, and farming.

By introducing ULTRA Biostimulants to the feed protocol we can increase the growth of most plants, without sacrificing the quality or mass of the plant. Developing stronger roots ensures rapid growth rate while reducing time-to-harvest, a benefit for both grower and the ground.

This is the reason we are excited to introduce our natural products for use in organic agriculture, on farms, and gardens, across the world.


Join us in growing a greener and cleaner planet with ULTRA.

Bob Mark

Natural Growth Biostimulants, LLC

What are Biostimulants?


2018 Farm Bill Definition 

“A substance or micro-organism that, when applied to seeds, plants, or the rhizosphere, stimulates natural processes to enhance or benefit nutrient uptake, nutrient efficiency, tolerance to abiotic stress, or crop quality and yield.”

Definition of Biostimulant 2019
U.S. Environmental Protection Agency (EPA)


“A naturally-occurring substance or microbe that is used either by itself or in combination with other naturally-occurring substances or microbes for the purpose of stimulating natural processes in plants or in the soil in order to, among other things, improve nutrient and/or water use efficiency by plants, help plants tolerate abiotic stress, or improve the physical, chemical, and/or biological characteristics of the soil as a medium for plant growth.” 

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ULTRA Biostimulants are

WSDA Registered Material &

USDA National Organic Standards

Natural Growth Biostimulant, LLC is proud to announce that Ultra Bio Green GOLD and Ultra Bio Green GARDEN are registered for use in Organic Agriculture!


Our Washington State Department of Agriculture (WSDA) organic material registration is valid anywhere organic producers and handlers are working within USDA Organic standards.


If you are looking to grow the highest quality plants, flowers, vegetables, trees, or row-crops while using input materials certified for organic production, the ULTRA Bio Green family of biostimulants is the answer you are looking for.

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See what Grows... ULTRA Biostimulants is on Instagram​ @ultrabiogreen

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ULTRA Biostimulants Garden​ 

Formulated for growing plants, vegetables and flowers  Ultra Bio Green Garden plant biostimulant enhances the growth of most plants, fruits, and vegetables. Our all natural and highly concentrated formula can safely be applied in certified organic gardens or yards, working well in all types of conditions and lasting for an entire grow-cycle.

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ULTRA Biostimulants for


ULTRA Biostimulants for


ULTRA Biostimulants for


ULTRA Biostimulants for


ULTRA Biostimulants for

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