Growing marijuana takes a certain level of commitment: time, energy, and financial resources, so be sure you can commit to the whole process.
After completing these steps, it’s time to wait. Check the paper towels once a day to make sure they’re still saturated, and if they are losing moisture, apply more water to keep the seeds happy.
Marijuana seeds can be acquired from an array of sources and can vary in quality. For more info on how to buy marijuana seeds, check out our Guide to buying cannabis seeds.
Was the seed found in good weed?
This is the beauty of seeds—often, you can tell which plants or genetics will thrive right from the get-go. This will help you determine which plants you want to take cuttings from for clones or for breeding if you want to create a seed bank of your own.
Pre-flowers can initially be extremely small and hard to identify with the naked eye, but you can use a magnifying glass to get a better look.
Ask yourself a few questions to decide if it’s worth the time and energy to grow the seed.
Within a week or so you should see a seedling begin to grow from the soil.
To test the viability of a seed you can place the seed in a glass with distilled water. Seeds that sink within 2 hours have sufficient mass. These seeds generally have a better chance of sprouting than seeds that still float.
Although it isn’t always visible with the blind eye, on a quality cannabis seed you can see a pattern of “tiger stripes” or dark spots.
Fertile cannabis seeds are black, dark brown, red-brown or gray with a shiny glow as if there is a bit of wax on the peel. Cannabis seeds with a different color such as white, yellow or light green will probably also germinate, but indicate lesser quality. Such seeds have been harvested too early and haven’t had enough time to ripen.
Cannabis seeds have a unique shape. They are oval, have the shape of a drop and are small in size. On average, a cannabis seed is about 2 to 5 mm long and 2 to 3 mm thick. If you want to know what you can expect in advance, then we can advise you to take a look at the seeds of a tomato.
Note: the moisture from your fingers can damage the seed. Please use linen gloves to prevent this.
Note: this test isn’t 100% accurate and only provides an indication of the viability. In addition, the water will activate the germination process. Therefore, only carry out this test if you want to germinate the seed immediately. After performing the float test, you can’t longer store the seed.
Healthy cannabis seeds are sufficiently matured and therefore have a different appearance than unripened cannabis seeds. For example, viable cannabis seeds meet a number of criteria. Think of the size and shape, hardness of the outside and color.
A fully formed male plant – this is what male plants typically look like if you let them grow out
Closeup of a single pollen sac as it grows in
Another example of spilled pollen
Sometimes when they first start growing in they look like a bunch of grapes
When pollen sacs open up, they look like flowers – well they are flowers in a way, but you know what I mean ?
This male-looking plant was covered in pollen sacs in a similar formation as buds. Before this, I’ve never seen a male plant with such little pollen sacs before! I learned this is a female plant that was reversed to make pollen sacs as part of the process of making feminized seeds.
Here’s a picture gallery of several different male marijuana plants for your reference!