The one true method to test the genetic potential of a seed is to simply put it in the soil. It won’t take too long to see the results. This option is best for the hobby home grower who has time and space to spare for a risky project. Growers cultivating cannabis for commercial use likely don’t have the excess time to invest.
We hear this question all the time from clients and beginner growers, and the answer is a resounding no. There is simply no way to tell the sex of a cannabis seed just by looking at it.
However, slight patience is required when conducting the float test, as results are not immediately apparent. You’ll have to wait for approximately 1–2 hours before confirming the results. Some good-quality seeds will need adequate time to absorb enough water for them to sink. Use this time to go water the garden and get some much needed pruning done. Upon your return, any seeds that remain on the surface are most likely not viable and won’t be worth further time and effort.
Source Your Seeds Well
Unlike other agricultural crops (like vegetables, fruit, or grain), cannabis hasn’t undergone the vigorous breeding techniques that ensure a stable crop. This means that you’ll sometimes sow a pack of seeds technically labeled as the same “strain,” but may end up with very different looking plants. It also means that the individual seeds you buy from a seed bank can vary in appearance.
The fact that cannabis seeds can vary in appearance has led some growers to think that the size, shape, or color of a seed dictates its quality.
Quality seeds are the key to healthy plants and good harvests. While proper feeding/watering and good light quality obviously also affect the health and yield potential of your plants, starting a grow with top-shelf genetics is equally, if not more important. But how exactly do you tell quality cannabis seeds apart from the rest? In this article, we’ll show you exactly how to spot top-quality cannabis seeds, avoid duds, and start your grow off right.
This simple and cost-effective method is a great way to tell the good genetics from the bad; they will sink or swim, literally. Seeds that remain buoyant on the surface are more than likely of poor quality and are to be discarded. Seeds that sink to the bottom like a botanical cannonball are probably healthy and should be germinated.
If you’re looking at your weed and you’ve noticed it has seeds in it, it’s important to figure out why. This will help to determine whether or not it is bad they are there. There are two main reasons why you may have seeds in your weed.
If you are growing cannabis and are here to figure out if you have a male, female or a potential hermaphrodite: we want to introduce you to “ nanners ” which is a tell tale sign that pollination has taken place. Check out this article about how soon you can tell the sex of your cannabis plant.
Why This Matters
This seedy weed could mean that the grower didn’t properly identify the male plants. Most growers will remove these plants immediately to ensure that their female plants are not pollinated.
If you’re going to try growing with seeds, check on their viability first. Seeds that are dark in color are best. Whole dark, mottled seeds are mature and ready to plant, but the lighter, softer or cracked seeds are not as viable for successful germination . The image below is an example of healthy looking cannabis seeds that should be viable.
If you’re feeling ambitious you can take the seeds out of your pot and try to grow from them. Here are a couple tips for determining whether or not to grow with the seeds you find: