What is the best way to germinate your cannabis seeds? Growing cannabis at home means you must get creative with emulating the seed’s natural growing environment to sprout its first root to begin growing. Two of the most popular methods for germinating cannabis seeds are:
- Glass water method
- Direct in Soil method
The debate is on for which is the most reliable at delivering a high germination rate. Will it be the simplicity of the glass-water method or the direct-in-soil method’s ability to create an outdoor growing environment best? Let’s explore the pros and cons of each method to determine which is best for getting your beans to pop!
Glass Water vs. Direct in Soil Germination Methods
The overall goal of the germination stage is to stimulate the tap root to emerge from the seed to begin growing your cannabis plant. Water is essential for this stage. Cannabis seeds absorb water, providing the tap root with nutrients to strengthen it and help it break through the outer shell. The glass water and direct in soil methods differ in how they deliver water to the seed.
The glass water method works by filling a small glass cup or bowl with water and letting cannabis seeds soak inside it. Soaking the cannabis seeds helps soften them and provides a direct water source for them to absorb. The direct in soil method involves planting cannabis seeds directly in the growing medium and watering the soil to deliver the resources they need to grow.
Advantages of using the glass water method are:
- It’s beginner-friendly
- It’s easy to monitor your seeds
- Effective for fresh and older cannabis seeds
- Space-saving for germinating multiple seeds
Advantages of using the direct in soil method are:
- Best emulates a natural outdoor growing
- No transfer needed to progress to the next growing stage (seedling)
- Germination speed

Anticipating challenges with each germination method
The perfect germination method doesn’t exist. Each technique has challenges and disadvantages compared to the others, which can lead growers to prefer one over the other. Here are a few things to consider with the glass water and direct in soil method before deciding which is best for your cannabis seeds.
Neither method delivers a 100% germination rate. Glass water and direct-to-soil methods have high success rates when done correctly. However, growers can still encounter seeds that don’t sprout. It could be due to old cannabis seeds, immature seeds, damaged seeds, or other factors.
Downsides to using the glass water method
- An additional step of transferring germinated seeds to the growing medium
Often requires an alternative method (paper towel or direct in soil) to complete the germination stage
Downsides to using the direct in soil method
- Planting one seed per cup takes up more space when germinating multiple cannabis seeds
- More light usage in your grow room
Testing both germination methods
The best way to decide on your favorite germination method is to experiment with both. Our 10-seed packs are perfect for conducting a split-test of the glass-water and direct-in-soil methods.
Divide the pack in half to drop five cannabis seeds in a glass water jar and plant the other five seeds in a cup of soil. For smaller grow setups, try one seed in each. Since the seeds are the same strain, it gives a good side-by-side comparison of the effectiveness of each germination method.
Compare how long each method takes to germinate the cannabis seeds, which has the best success rate, and which has a better overall flow with your grow setup. Remember to document the daily results in your cannabis journal to review notes later.
Which is the best method for germinating cannabis seeds?
The best germination method gives growers the highest success rate for hatching their cannabis seeds. Growers can achieve different success rates even when using the same process. For example, one grower may use better water supplements to boost success with the glass water method. Conversely, growers can use nutrient-rich soil to enhance the germination process with the direct in soil method. Once you learn how to germinate cannabis seeds, you can begin experimenting with various enhancements to modify your preferred germination method.
It’s ultimately up to you to decide which is the most reliable method to germinate cannabis seeds. Both methods are effective for sprouting the taproot, so you can stay loyal to your favorite or switch methods every growing season!

Start Your Grow With Quality Cannabis Seeds
Quality cannabis seeds give the best germination rate. Amsterdam Genetics cannabis seeds have a 95% germination rate. If you’re having trouble germinating your seeds, refer to our Germination Policy so our customer service team can assist.
We proudly feature the finest seeds that are perfect for using in the glass water and direct in soil methods.
- An additional step of transferring germinated seeds to the growing medium