How to Grow Cannabis from Seed: Fool-Proof Germination Method

How To Grow Cannabis From Seed

Growing cannabis from seed can be an exciting and rewarding experience. Whether you’re a seasoned grower or a beginner, the germination process is a crucial step that sets the foundation for a successful grow. While there are various methods available, one popular and fool-proof technique involves using a zip-lock bag and a moist paper towel. In this blog post, we’ll guide you through the step-by-step process of germinating cannabis seeds using this simple and effective method.
Grow Cannabis From Seed

Step 1: Gather the Materials

Before you begin, make sure you have all the necessary materials at hand. Here’s a list of what you’ll need:

  1. Cannabis seeds: Choose high-quality seeds from a reputable source, like Flight Cannabis. It’s essential to ensure the seeds are fresh and viable for germination.
  2. Zip-lock bag: Select a small-sized, resealable plastic bag that can comfortably fit the seeds.
  3. Paper towels: Opt for unbleached paper towels, as they are less likely to contain harmful chemicals.
  4. Distilled water: Using distilled water helps minimize the risk of introducing impurities that could hinder germination.
34 Street Seed Co |Multipack | 6 Seeds
Growing cannabis from the seed takes a lot of time and care, but can certainly be worth the effort. Plants grown from seeds tend to be a bit stronger and usually yield more dense flower. Seeds are not guaranteed to sprout male or female plants, so be sure to check the sex of your plant as early as possible.

Step 2: Soak the Seeds

Soak your seeds in a glass of clean water, at room temperature (20°- 25° C) for 12 hours. Keep in a warm place and signal it to prevent accidents (like drinking the water or throwing them out).

Soaking your seeds in a glass of water for more than 24 hours will deprive them of oxygen and they are likely to drown and may not sprout. A seed that sinks after 12 hours it’s likely to be viable and good for germination. If it floats, touch it, and it will probably sink. On the other hand, seeds that float after 12 hours are not likely to sprout soon.

Seedling Cannabis Plant Growing

Step 3: Preparing the Paper Towel

Take two paper towels and dampen them with a small amount of distilled water. Be careful not to oversaturate the towels, as excessive moisture can cause the seeds to rot. It’s advisable to use a spray bottle or gently pour water over the towels to achieve the desired moisture level.

Step 4: Placing the Seeds

Lay one damp paper towel on a flat surface, and gently place the cannabis seeds, ensuring they are spaced apart. Fold the paper towel to cover the seeds gently, creating a moist envelope. Then, place the folded paper towel inside the zip-lock bag, making sure it is sealed tightly to retain moisture.

Step 5: Providing Optimal Conditions

To facilitate germination, it’s essential to create a warm and dark environment. Place the sealed zip-lock bag in a dark location with a consistent temperature between 70-85°F (21-29°C). You can choose a drawer, cabinet, or a dark corner of a room. Avoid exposing the seeds to direct sunlight during this stage, as excessive heat can harm the delicate seedlings.

Young Cannabis Potted Plant

Step 6: Monitoring Progress

Check the zip-lock bag every 24 hours to ensure the paper towels remain moist. If they start to dry out, spray a small amount of distilled water onto the towels to maintain the desired moisture level. It’s crucial to strike a balance between keeping the seeds moist and preventing them from becoming waterlogged.

Step 7: Germination and Transplanting

Within 24 to 72 hours, you should start to see small white roots emerging from the seeds. This signals successful germination. Once the roots reach about a quarter to a half-inch in length, carefully transfer the germinated seeds to a growing medium of your choice. This could be a small pot filled with a high-quality seedling mix or directly into the soil if you prefer. Ensure the growing medium is kept consistently moist but not overly saturated, and provide adequate light for the seedlings. Depending on the strain and growing conditions, the seedlings will continue to develop into healthy cannabis plants.
Small Cannabis Seedlings Growing Under Purple Grow Lights


Germinating cannabis seeds using the zip-lock bag and moist paper towel method is a reliable way to kickstart your cannabis grow. By providing the right conditions, monitoring moisture levels, and exercising patience, you can witness the magic of life emerging from the seeds. Remember, each seed has the potential to become a unique and beautiful plant, so handle them with care throughout the germination process.

Happy growing!

Looking for more resources? Check out these other great articles on growing cannabis from seed:

Flight Cannabis is a recreational cannabis retailer located on Vancouver Island. If you have questions about finding the right products for you, come ask us in our Nanaimo or Langford store! Our knowledgeable team will be happy to help you out and provide personalized recommendations. Be sure to subscribe to our newsletter to stay up-to-date with monthly specials, new products, and more!

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