The BudTrainer Method™

The BudTrainer Method™ #3: How to Plant Hemp Seeds

Cannabis seedlings in the BudCups self-draining, easy transplanting seed starting containers

 Updated on Dec 15, 2023


Everything taught and sold by BudTrainer is to be used strictly for legal purposes. We condemn the production of illegal substances and it is your duty to ensure that you are complying with the law. The words "hemp", "cannabis", "weed", and "marijuana" are used interchangeably to refer to the same plant (legal hemp with less than 0.3% THC) for the purposes of this lesson.


Planting for Success: Optimizing Hemp Growth from the Get-Go


Understanding the "why" behind proper planting techniques is essential for a healthy and bountiful harvest. After all, a strong start is the foundation of a successful growing experience. BudTrainer's mission is to empower you with the knowledge and premium gardening accessories necessary to grow your own high-quality, massive buds with confidence. So let's get started on this important lesson and set you on the path to becoming a master cannabis cultivator!


Cannabis seedling with root ball exposed beside the BudCups self-draining easy transplant cups


1. Tools & Materials

  • Enriched soil or coco coir

  • The BudCups™

  • Dechlorinated tap water




2. How to Plant Marijuana Seeds


Step 1 - Prepare your BudCups

Drop the bottom plate inside your BudCups and make sure it sits flat around the edge, with the convex, pointy end facing up. This last part is very important, as using your bottom plates upside down can lead to water-logging.

Hand holding the BudCups bottom plate, about to drop it into the BudCups self-draining easy transplanting cups


Step 2 - Prepare your soil

Fill your BudCups with enriched soil, up to ¼" away from the top. Make sure to break down any dense chunks of soil, and do not push your soil down. Roots need oxygen in order to grow, and loose soil creates oxygen pockets for that to happen (contrary to popular belief, roots get rotten if submerged in water).

Hand filling the BudCups self-draining easy transplanting cups with soil and a black trowel


Step 3 - Water your BudCups

The best time to water your media is before planting, so that you don't disturb your seed with the water once it's planted. Using 150ml (5oz) of dechlorinated tap water, moisten the soil slowly (ideally, over 60 seconds), until a small amount of runoff starts coming out of the raised bottom. This means your BudCups are fully saturated and your seed will grow its roots over the next 2 weeks in search of all that water, thus growing in all directions.

BudCups self draining easy transplanting gardening containers with some dark runoff water coming out from the bottom edges


Step 4 - Plant Your Seeds

Make a small ¼" deep hole in the center of your soil. Place your seed into the hole, with the pointed end of the seed facing downward and the crown facing up. Cover the seed with a small amount of growing medium, just enough to cover the ¼" hole.

Hand planting a seed in the BudCups self draining easy transplanting gardening containers


Step 5 (optional) - Cover Your BudCups

If you are growing from seed, it's important to provide it with a high-humidity environment in the beginning. For this reason, you can use either a humidity dome (with the window open) or a simple transparent plastic cup (make a hole in the top) flipped upside down, on top of the soil.

The dome or the perforated transparent cup will make sure the humidity stays at around 80% while still allowing the light to come through. You can remove the transparent cup or the dome once the seedling reaches more than 3" in length, at which point they will be strong enough to continue growing.

Seedling sprouted inside the yellow BudCups self draining easy transplanting gardening containers


Pro Tip: Add Warmth & Light

Marijuana seeds need warmth and light to germinate, so try and keep the temperature between 70-79°F (21-26°C) and provide 18-20 hours of light per day. If you are growing in a windowsill, you can still supplement it with artificial lighting after the sun goes down. Weed plants need long days in order to thrive.

Now that you have planted your seeds and created the perfect environment for them to thrive in, it's time to leave them alone for at least 2 weeks, at which point you will be watering them for the second time.


Behind the Leaves: Why Not Plant in the Final Pot?

The reason why we don’t plant our cannabis seeds directly into their final containers is because they end up developing weaker root structures than if we transplant them. Here is why.

When your seeds start in the BudCups, the tap root (the main root that comes out of the seedling) reaches their edge within a couple of days, which forces more roots to be produced from the center of the rootball. This allows for multiple root tips to form, so that when the young plant is transplanted into the next pot, those root tips are ready to shoot out and grow in every direction.

Conversely, if you were to plant your seed in the final container right away, the tap root would grow all the way to the bottom, and root tips would only form around the bottom because that is where the water stays after each watering session.


Diagram showing the difference between planting directly in the soil vs transplanting

The BudTrainer Method™ #2: How to Select Hemp Seeds
The BudTrainer Method™ #4: How to Transplant for Success

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