We do not recommend taking the size or shape of a seed into consideration as a sign of its quality. Some strains simply produce smaller seeds than others, and sometimes the same plant can produce seeds of different sizes and shapes. Never discard a seed just because it is smaller or of a different shape than another one.
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.
Can You Tell The Sex Of Cannabis Seeds From Their Appearance?
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.
The alternative to this is to risk buying seeds from a hobbyist. This isn’t to say that hobby growers cannot produce fantastic genetics, but if you don’t know them or their skills, there’s no way to know whether your seeds will grow.
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.
Knowing whether you prefer e.g. a Kush, a THC rich vs CBD rich strain, a fruity strain or a Skunk strain is a good place to start. If the array of cannabis seed choices can seem overwhelming, the following article may help you select the best strain for you.
One common question from growers is whether white cannabis seeds or dark cannabis seeds have different germination rates. When you compare cannabis seeds you may have noticed that the seeds are rarely identical. Instead you may see a range of different sizes and colours. The differences in size, colour and appearance often produce debate among growers. Why do the cannabis seeds look different and do these differences result in slightly different growth characteristics in the plants which grow from them?
The genetic material in the soft plant tissue inside the seeds is what really determines the type, size, sex and potency of the cannabis you will eventually grow. These genetics, along with the environment you provide, will control the terpenes, cannabinoids, yield and potency of your eventual cannabis harvest.
What should you look out for in a cannabis seed?
Even cannabis seeds produced from the same branch of a plant can have quite different appearances. Size, as well as shape and colour can vary. Some cannabis strains can produce seeds that have certain appearance characteristics. White Widow seeds, for example, can often be very small and pale. Frisian Dew seeds can have a slightly grey colour.
Once you have the best cannabis seeds for you, it’s worth ensuring you get maximum germination rates with a good germination method. The preferred Dutch Passion way to germinate cannabis seeds is with moist (but never soaked) cotton pads. If you spot any issue during the growth of your cannabis seeds, we highly recommend to refer to our illustrated guide featuring the key nutrient deficiencies and excesses symptoms and how to cure them.
One suggestion is that the white cannabis seeds may have a slightly softer shell, allowing the white cannabis seeds a slightly faster germination. The experiment was repeated twice more. On each occasion, the seed germination rates were the same, but the white seeds tended to germinate faster.
The dark cannabis seeds (on the right hand side in the video) showed the same germination rate as the white cannabis seeds (left hand side). However, the white cannabis seeds appeared to germinate a little bit faster than the dark cannabis seeds.
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