How To Germinate Cannabis Seeds: A Step-by-Step Guide
“It all starts with a seed.” Learning how to germinate cannabis seeds is essential to all future growing success. Properly popping beans puts you on the road to healthy plants and heavy harvests. But there are a few things to consider in order to master how to germinate cannabis seeds the right way.
Step 1: Choosing Seeds
First, you must decide on what seeds to grow and where to get them. Seek out trustworthy seed companies that have been around and have a track record of successful breeding. Take a look at our High Times Seed Bank Hall of Fame for a list of 50 of the most well-known and accomplished strain creators.
Don’t have seeds mailed to the location where you’re growing or planning to grow. Beginners might want to start with an indica-dominant strain that will stay small and stocky with a short flowering time.
Sativa-dominant strains tend to stretch more and have longer flowering times. If your seeds have been sitting around in storage for a while, check out these tips for germinating old seeds.
Step 2: Sprouting Seeds
Some people choose to use the moist paper towel method to germinate their seeds but I recommend just sowing them directly into the medium you plan to grow in. This reduces any stress the seedling will suffer through the transplanting process and secures the young plant firmly into your chosen mix.
Moist Paper Towel: Place seeds on a plate between two moistened paper towels. Put a plate on top to cover and within a couple of days, you should see the seed cracked open and a taproot emerging. Immediately and carefully (using tweezers) place your seed into your growing medium taproot down and water it in.
There’s nothing inherently wrong with using a moist paper towel, as long as you’re gentle with the emerging tap root and as long as you don’t let the taproot grow too long before planting. My belief is simply to start the plant in its own medium to reduce the likelihood of damaging the tender young roots and shoots.
Straight Into Medium: Poke a hole in your pre-moistened grow medium of choice. Drop your seed in about a quarter- to a half-inch deep. Cover the seed with more of your medium and tamp it down gently.
The important thing is to not plant too deeply and to keep the medium moist and warm for the best germination success rate. Clear plastic wrap placed over the top of the container helps maintain humidity. A heating mat underneath your plastic tray will increase your success rate as well.
Step 3: Seedling Care
Within a few days, you should see a minuscule green shoot emerging from the top of your medium. Immediately get your seedling under adequate grow lighting. Ideally, for the strongest growth rate, you want Metal Halide (MH) lighting, but Fluorescent or LED (Light-Emitting Diode) lighting works fine and won’t produce as much heat.
No matter what lighting you choose, always remember not to keep your grow-light too high above your seedling as this will make it stretch to reach the light and leave your young plant looking long and lanky.Use a timer to make sure the lights are on for at least 18 hours per day. Learning how to germinate cannabis seeds also means treating the emerging seedlings with the proper care.
Temperature and Humidity: You never want your seedlings to dry out. Keep your medium moist but not soaking wet. The air in your grow space should be kept warm, between 70-75 degrees Fahrenheit and with a relative humidity between 50-60 percent.
Use a thermometer/hygrometer to keep track of these factors at all times. As your plant adapts to its new environment, you will see new foliage sprouting forth. Your plants are now well into their vegetative stage of plant growth.
Final Hit: How To Germinate Cannabis Seeds
Now that you know how to germinate cannabis seeds, you’re ready to begin the process of growing your own weed. Just remember, provide light, food and water to your plants when they need it and keep the environment within acceptable levels of temperature and humidity. You’ll avoid so many problems by simply maintaining the proper parameters.
One last tip: Remember to label your seeds, seedlings and clones to avoid confusion and costly mistakes. Now get growing!
Do you plant weed seeds pointy side up or down?
Looking closely at a cannabis seed, you’ll notice that it’s more or less oval-shaped, with one end that’s pointy, from which the primary “taproot” will emerge, and the other end with a small “crater”, known as the crown. When germinating seeds using a starter plug, jiffy, rockwool or direct soil planting, there’s a fair amount of confusion and conflicting information around how to plant the seed. The debate generally centers around “pointy side up or down”. Some people get so confused about which way is up that they just plant seeds on their side and let each seed decide for itself how to grow, while others pay little attention to seed orientation.
In nature, wild cannabis seeds surely have an innate intelligence that gives them the best chance of survival. So, logic tells us that the pointy, taproot end should dig itself in and end up facing down. But the other side of the argument says that the crown end is heavier, and so it ends up facing down, with the pointy end directed upward. The taproot then emerges from the point and will habitually curve downwards. So, according to this argument, you should plant your seed pointy side up into your preferred growing medium, in order to prevent it from having to spend extra energy on creating a second, downward-oriented curve. However, many experienced growers will disagree and tell you to simply plant seeds pointing down. With that said, truthfully, chances are good that your seed (assuming it’s of reliable quality) will germinate and develop adequately regardless of which direction you choose. This is because seeds have an instinctive ability, whichever way you plant them, to determine which way is up and which way is down, and their taproots will figure this out and grow accordingly.
Unfortunately, you cannot submit answers if you are not signed in. Please login to continue or, if you are not yet a member, sign up now!
12 Tips for Sprouting Cannabis Seeds
Every tiny cannabis seed represents a potential pound of cannabis flower. It’s crazy to think that so much abundance springs forth from such a small thing. If you’re looking to grow cannabis plants this summer, get started now with a visit to KindPeoples’ award-winning Genetics Department, where you can browse hundreds of strains in seed and clone form and pick the perfect plant to grow.
Once you’ve found the plants you’re looking for, getting started with growing cannabis is easy.
Simply follow these basic tips for germinating your seeds and planting them in soil.
- Look for viable, plump seeds with a telltale “tiger stripe” on the side that indicates maturity. Larger seeds tend to yield more vigorous and hardy plants.
The most common reason for lack of germination is overwatering. Don’t let your seeds get too wet or they can drown, and don’t soak for too long or they will begin to rot. If the seeds haven’t sprouted after 48 hours, let them go another day, but after 5 days the seed is most likely dead.