There is no visible difference between regular, feminized, or autoflowering cannabis seeds, indica or sativa seeds, and seeds for growing industrial hemp. For this reason, always buy from a reputable seed bank to be assured of authenticity.

Most marijuana seeds are around the size of a match-head, but can vary by variety from not much larger than a tomato seed to as big as a small pea. This is not an indication of the size or health of the cannabis plant that will grow from it. Often - but not always - the seeds of sativa plants are smaller than those of indica types.

Marijuana seeds contain a near-perfect balance of the essential fatty acids Omega 3, 6 and 9. These are vital to human health and cannot be produced by the body. It is better to eat seeds of hemp rather than cannabis as the former are a lot cheaper, and there is no difference in the EFA content - just the THC content of the plants they produce.

The oldest known cannabis seeds are 2,700 years old and were found in 2007 in a grave in China. Ancient cannabis bud which would have produced THC, CBD and other cannabinoids, has also been discovered.

A single plant can yield hundreds and even over 1000 seeds depending on its size and the efficiency of pollination during flowering. Some hemp strains are bred to enhance this production for when seeds are the primary crop.

The best temperature to store your seeds is 5 - 7 degrees centigrade, which is usually the temperature of the door in a domestic refrigerator, handily enough. They should also be kept perfectly dry to avoid both mould and premature germination.

In many countries, the possession of cannabis seeds is legal whereas growing them is harshly punished. Many people are forced to buy and preserve their seeds as collectors’ items.

Hemp seeds were taken on long sea voyages during the Dutch Golden Age of naval exploration. If stranded, the sailors could use some of the seeds as a nourishing food source and plant the rest, relying on the rapid growth and multiple uses of hemp to fix their ships.

Hemp seeds were used in religious rites by the Scythians, the ancient race which gave their name to the scythe thanks to their use of these curve-bladed tools to reap their crops, including hemp.

Hemp seeds are a common ingredient in bird food, and there is a urban legend in the UK of someone - usually a grandmother - emptying the bird food bowl at the bottom of the garden and later being arrested for the bushes they were unwittingly growing from their "weed seeds".

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