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cannabis seeds not sinking

After a total of four days since the cannabis germination started a majority of the cannabis seedling should begin to sprout from the surface of the growing medium.

7pH. The cannabis seeds were placed with taproots sideways or with the seed hull standing upright and the taproot pointing downwards about ½ to 1” inch deep into the promix growing medium.

In general, growing cannabis from seed can offer the opportunity for growers to possibly create something new which can be exciting and different. Besides genetics, phenotypes based on the grow environment can create different alterations of the same cannabis strain (Conviron, 2017). An individual can easily purchase seeds online or by pollinating and hybridizing one’s own seeds for use. Cannabis growers may find more success by first floating or soaking their cannabis seeds in filtered water, than planting directly into a growing medium.

Why Float Cannabis Seeds?

Properly floating cannabis seeds is as easy as placing these seeds in warm filtered water with a

The germination of cannabis seeds depends on the right amount of heat and moisture (NGA, 2018). Since viable cannabis seeds float on the surface of the water, they are able to retain the proper ratio of moisture and air. Seeds that do not float may be sterile or underdeveloped. When you roll the seed in your hands prior to floating the seed, it should be firm and brown with the occasional dark stripes in appearance. Immature cannabis seeds appear green or sometimes white and as stated above they will sink to the bottom when you attempt to float them.

7pH in a container that is covered from direct light. When the tap root is about ¼ to ½ inch in length, you know the cannabis seeds are ready to be placed into their growing medium.

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We have identified this seed and now we need to put it away in a warm and dark place for 24-30 hours. This allows the seed to absorb water. The seed does not need or like any light yet, but likes everything warm.

Pre-soaking Method
(shot glass method)

Cannabis Seed Germination

Giving the seedlings a mild nitrogen mixture in your water* will help vigorous, healthy growth at this stage (if your soil does not compensate in this important area). Be careful! They are still young and very impressionable.

For our tutorial, we are using a shot glass, mineral water at room temperature, and our chosen seed(s). We use masking tape and a black marker to identify our seeds when germinating multiple cannabis strains.

I use a solo cup and slice four slits in the bottom for good water drainage and added aeration. It also makes the transplant very easy.