About Prairie Plant Systems Inc

Sub Terra LLC

SubTerra Logo

SubTerra LLC is a plant-based pharmaceutical manufacturer located in White Pine, Michigan, committed to the production of Active Pharmaceutical Ingredients (API) such as high value proteins and phytochemicals.

SubTera Growth Chamber While traditional growing methods, including greenhouses, are limited by soil conditions and climate, SubTerra is unique in that all crops are grown in a biosecure underground environment, resulting in several key benefits:

Controlled Environment - Year-Round Growth

Conditions within the growth chambers are completely controlled through automation of lights, heat and water. With no drought, floods, wind, insects or harsh natural elements, SubTerra crops are afforded uninterrupted growing cycles, resulting in maximal product yields on a continuous basis.

Rapid Growth Potential

Potentially as a result of slightly higher carbon dioxide levels, plants grow better in biosecure underground facilities than in fields or greenhouses.

Growing Excellence

SubTerra is committed to quality assurance and is compliant with Good Agricultural Practices (GAP) and Good Laboratory Practices (GLP).

Pesticide and Herbicide Free Accelerated Growth

With no threat of insect, pests, or the plant diseases they can carry, there is no need for pesticides or herbicides and no residues on unpurified bulk material from SubTerra plants. This practice streamlines regulatory compliance requirements by eliminating the need to quantify unwanted material residue throughout the production process.

High Containment Facility

As a result of the production site being far removed from any surface agricultural activity, SubTerra meets the U.S. Department of Agriculture (USDA) regulations, ensuring no risk of unintended genetic release. The facility has been issued a level 2 containment rating.

Bio Security Below Ground

SubTerra biosecure growth chambers not only keep the plants safe from external threats, the facility also protects the intellectual property of the high value crops. High-tech intrusion alarm further ensures crop safety.


Biosecure Growth Chambers

Prairie Plant Systems has grown significantly through development and acquisition of our key subsidiary companies:

CanniMed Ltd.

CanniMed Ltd. was established in 2013 to provide Canadian patients with access to a standardized and trusted supply of pharmaceutical-grade cannabis under the Marihuana for Medical Purposes Regulations (MMPR) governed by Health Canada.

SubTerra LLC

Sub Terra LLC is a plant-based pharmaceutical manufacturer committed to the production of Active Pharmaceutical Ingredients (APIs) such as high value proteins and phytochemicals.

PPS Fruit Trees

Decades of research and development have made PPS a leading supplier of fruit trees to orchards around the world. Our continued commitment to excellence can be seen in the uncompromising quality of every plant PPS grows and sells.