2 - 4 Days • Indoor Grow Training
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Hands-on Education

Work directly with cannabis plants in all stages during Horticulture Labs

Cultivation Law

Learn about Local, State & Federal indoor & outdoor cultivation laws

Seed to Harvest

Learn everything you will need to know from seed to harvest

Grow Room Design

Learn how to construct your own grow space, including tents, rooms, greenhouses, irrigation systems, and more!

Safety & Responsibility

Learn about ventilation, electrical calculations & safety, and much more!

Pests & Pathogens

Learn about Pests & Pathogens, Prevention & Treatment, and much more!

The Horticulture Seminar

The Oaksterdam University Horticulture Seminar provides the most comprehensive indoor horticultural education & training available for the Cannabis Industry. Classes consist of slide presentations, lectures, and workshops led by industry leaders. 

The Seminar program is designed for anyone looking to learn everything from seed to harvest. This comprehensive course will begin with cultivation law, giving you the opportunity to learn about the legalities of growing and ensuring that you operate safely and responsibly. 

Ace Kisch

The Horticulture Department

Our Horticulture Department is comprised of professional growers with decades of experience and a grow facility housing cannabis plants of all stages of growth. Students will gain experience with seeds, mothers, clones, early and late vegetative plants, flowering plants, harvest, and more! Students will also learn about the various types of equipment, soil, nutrients, fertilizers, and pesticides we use here at Oaksterdam University, as well as comparing them to other products.

Horticulture Semester students will be provided ample time for Q&A interaction with our expert instructors as well as additional hands-on lab opportunities with our Friday Horticulture Labs. Click the link below to learn more about our Horticulture Department, Facility & Faculty

Horticulture Seminar Class Descriptions

Civics 101

Understand how to become a qualified patient, or recognize one. Review your rights under the law, including how to exercise your rights when navigating police encounters successfully. Learn your civic rights and responsibilities to positively contribute to our community and the cannabis industry.

Legal 101 – Federal vs State Law

An important introduction to the legal issues surrounding medical cannabis and the cannabis industry. Learn about the laws that govern cannabis distribution, cultivation, possession, and consumption for adults and medical patients. Have your questions answered by prominent cannabis lawyers, many of which helped write the law. Grasp the difference between state & federal law and what each means for you. Learn how to behave safely and responsibly under California and Federal Law.

Politics and History of Cannabis

Cannabis is the world’s first cash crop with proven use that dates back over 10,000 years. The use of cannabis, and the industry that has developed, comes from long and complicated struggle of social, political, and medical activism and awareness. Learn about the political history of cannabis, and the key players and policies that have shaped the policy as we know it today. Learn the history and politics of the Cannabis movement, and figure out what part you play in the future of regulation and reform.

Horticulture 101 – Growing Safely and Responsibly

Learn the basics of how to grow cannabis. This course covers everything needed to get going and produce or improve your personal cannabis harvest. Instructors will detail the basics of watering, lighting, ventilation, life cycles, and equipment options. Indoor and outdoor information is included, as well as hydroponics and organic options. Even experienced folks can learn from this presentation about cuttings, pest and pathogen control, smell abatement, security, pH balance, and drying/curing.

Anatomy and Physiology of the Cannabis Plant

The cannabis plant’s structures, parts, how to identify them, and the functions that each one will be examined. The differences between male and female A&P and their reproductive processes will be emphasized.

Seeds and Cuttings

The beautiful plants we grow began as seeds, but some begin as cuttings. Determine when and why to use seeds instead of cuttings, and the pros/cons of their different applications. This is the beginning of the process. See up close seeds and learn to sprout them. Understand what helps ensure successful cuttings and learn to properly propagate and root a cutting properly. Receive a hands-on demonstration for the OU method of germinating a seed and taking a cutting.

Lab – Seedlings, Transplanting and Topping

Seedlings need to be transplanted before they have outgrown their containers and topped before they grow too tall. This lab will explain how to do these things and explore the reasons for doing so.It will also cover strategies and techniques for coaching vulnerable young seedlings into larger plants. Ways to prevent and deal with common seedling issues such as damping off and stretching will be reviewed.

Vegetative Growth

The vegetative growth cycle is when your plant charges forward towards building the structure needed for your optimal yield. The plant has unique needs during this phase as well as potential challenges, so taking a thoughtful approach to the handling of this process is critical for your success. Strategies and best practices will be discussed and evaluated.


How you choose and combine the appropriate mediums will support your cultivation strategy. Learn the different mediums used in cannabis growing and the details of their preparation when necessary. Learn about the pros/cons of each. Rockwool is currently the most diverse medium but is also slightly hazardous. See the OU method for conditioning rockwool, and experience the process yourself.

Conditions for Optimal Growth

Conditions for optimal growth in cannabis means that all required factors are fully available at all times and in the appropriate ratios. Learn about the specific factors for optimal growth, including CO2 enrichment, PAR conservation via reflection, temperature and humidity parameters, and optimal nutrient levels. Review strategies for achieving these conditions and the major hurdles that are usually encountered in the path to that goal.

Equipment Overview

Cultivating cannabis requires many different types of equipment. The types of equipment used for the different stages of plant growth and what equipment is appropriate will be reviewed. The pros and cons of different equipment technologies, as well as their costs and other consideration will be examined.


There are several different methods for measuring the quantity and quality of light for growing cannabis. Review the proper choices of lighting for each stage of growth and the costs associated with each. Measurements of light will be explained and strategies for maximizing lighting potential will be presented.


Proper ventilation is needed when growing cannabis. There are standards and practices for removing excess heat humidity and providing proper levels of CO2 to the plant. Students will be presented with different ways to achieve and maintain proper garden temperatures by using equipment such as ducting, fans and filters.

Electrical Safety and Load Calculations

Electrical circuits have maximum loads depending on several factors. Different voltages are needed for different equipment. Learn about safe and responsible electrical use in regards to indoor horticulture equipment. Discuss electrical loads and how to calculate available electricity. The difference between 120v and 240v and the necessity of each will be covered and discussed. Observe how to connect and disconnect a ballast and lamp to a power source.

Nutrients and pH

Learn the importance of nutrients and ph for the growth of cannabis with help you best support your plant. What is the optimal time? Why are the full spectrum of essential nutrients only available to the plant within two ranges of ph specific to either soil or hydroponics? This class will review the problems that occur when ph goes out of range and how to correct them. The OU method for adjusting a nutrient mixture to the desired pH will be demonstrated and practiced.

Lab – Nutrients and pH: Measuring, Mixing and Adjusting

Mixing hydroponic nutrients to the proper strength and pH can be confusing, as can the meters necessary for accurately measuring each value. This lab explains how to do this and why it is so important. There are procedures that are important to follow and strict requirements that pH and PPM meters require to operate correctly, all of which will be covered in detail.

Nutrient Disorders

Nutrient disorders are common in both indoor and outdoor gardens. Plants can have either not enough or too much of a nutrient. Learn how to recognize nutrient deficiencies and excesses, the causes of nutrient disorders, and how to correct them in each type of medium. Observe the OU method correcting a nutrient disorder.

Pests and Pathogens – Prevention and Treatment

Pests and pathogens infect both indoor and outdoor cannabis with great frequency and regularity. This can quickly destroy crops and/or make them unfit for human consumption in as quickly as 24 hours. Learn about the multitude of plant pests and pathogens that infect and devastate cannabis crops. Discuss ways to identify various pests and pathogens and learn about their unique life cycles, as well as the damage that they inflict. Strategies and substances for both preventative measures and treatment of active populations will be highlighted, with emphasis on prevention.

CO2 Supplementation

CO2 supplementation unlocks incredible hidden potentials in the growth of the cannabis plant. Learn why cannabis can use two to three times the atmospheric level of CO2, and the design features, equipment and instruments necessary to measure and maintain those levels. Discuss design strategies for controlling temperature, humidity and odor in the closed loop system which is critical to conserving injected CO2. Observe how to program the appropriate equipment and instruments to so proper ppm levels are maintained.

Life Cycle Fundamentals

The natural life cycle of cannabis starts with the germination of a seed and continues with vegetative growth, then flowering. Learn the stages of growth, how long each lasts, and how to manipulate these stages by altering light cycles. Review the needs of the plant at each of these stages and learn how to identify which stage of life the plant is in and best practices for each.

Plant Propagation

Cuttings and their propagation are crucial to commercial and private cannabis cultivation. Mothers and cuttings are usually the most efficient way to produce cannabis with known qualities and characteristics. Learn the pros and cons of using cuttings versus seeds, and the concept of “clone only” varieties. The OU method for taking and rooting a cutting will be demonstrated, and students will learn how to produce their own healthy cuttings.

Organic Gardening

Organic gardening only uses fertilizers, pesticides and fungicides that are derived from natural sources. With an array of benefits, organic gardening also brings unique challenges. Learn about the advantages and disadvantages of organic gardening and understand why cannabis is more important to grow organically than almost any other crop.

Lab – Sprays, Drenches and Compost Teas

Students will learn how to use organic sprays and drenches with cannabis for the prevention of pests and diseases. We will discuss the appropriate methods for the appropriate stage of growth.


Organics without the animal byproducts, ideal for small apartment living and use with automatic systems.

Early Flowering

The first several weeks of flowering requires specific observation. Learn how you ensure that growth is progressing at the rate that it should be. Understand the environmental conditions and nutrient requirements at this stage. A review of timeframes for canopy management and trellising will also be discussed.

Late Flowering

Late flowering is when the flowers increase the most in size and become most vulnerable to botrytis/rot. Plants have special needs during this period. Understand the nutrient and environmental needs of a late flowering plant and the diseases that are associated with it at this stage. Learn to identify, diagnose and take corrective action to keep flowering plants healthy until harvest.

Harvesting Strategies

Cannabis flowers achieve peak ripeness for a short period of time in which it needs to be harvested. A narrow range of temperature and humidity is required for them to dry within the proper period of time and to prevent molds from destroying them. Understand the difference between wet trimming vs dry trimming. Review the different approaches to harvesting a crop of cannabis and the environmental conditions needed to properly dry, process and store cannabis flowers. Learn the importance of collecting all resin glands during this process, and the options for making them into secondary products such as bubble hash or BHO.

Lab – Manicuring, Drying and Curing

Learn how to dry, manicure and cure cannabis after harvest. Determine when flowers are dry and how to manicure them and collect any material with glandular trichomes. Understand the vital curing process, why it's necessary, and the benefits.

hands on education…


The Oaksterdam University required textbooks & recommended textbooks are a great resource for both students & alumni. Students will utilize and refer to Ed Rosenthal's Marijuana Grower's Handbook during the Horticulture program, and will be assigned reading homework throughout the course. Learn more about the required and recommended textbooks by clicking the button below.

Network & Connect

Network with peers and professionals and establish roots in the industry: Horticulture Semester students will be provided with ample amounts of time to connect with their classmates and will have access to 1-on-1 Q&A opportunities with OU Faculty & Staff. Semesters students are also eligible to attend our Volunteer Horticulture Lab Fridays, where they can continue to network with their classmates while getting hands-on experience in our Horticulture Lab.


Oaksterdam University offers certification to students who pass their mid terms and final exams with a 75% score or higher. Certification is only a requirement for students who would like to use Oaksterdam University as a reference for employment.

Certificate of Achievement

Attend (or make up) all classes and labs, complete class lab project & complete the final exam with a score of 75% or greater.

Valedictorian Certificate of Achievement

Certificate of Achievement with Honors as Valedictorian

Attend (without make-ups) all classes and labs, complete class lab project & complete the final exam with the highest score in the class.

Enroll Today!