To a botanist, there is no plant on this earth named marijuana.
Cannabis, also known as marijuana (from the Mexican Spanish marihuana), and by other names, is a preparation of the Cannabis plant intended for industrial and medical use.
For the purpose of using cannabis as a medicine, we will only discuss the following.
There are three distinctly different varieties of cannabis.
Which cannabis seeds to grow will depend on many things, not least which type of cannabis you actually prefer. When choosing a cannabis strain for medicinal purposes, you may refer to this Cannabis Strains vs Medical Symptoms section.
Some careful home research will make the selection much more rewarding. *Some cannabis seeds are adapted and engineered to grow indoors, while some seeds are best suited for growing outdoors.
Some strains of cannabis is much more difficult to grow than others. Similarly, some have been engineered to be easy to grow, resistant to pests and can handle a lot more stress. The less experienced the grower, the more important it is to choose an easy strain to grow.
Indica and Sativa seeds
Cannabis seeds basically fit into two categories; Indica and Sativa. Breeders will often cross strains to change the growing or properties of the originals. The reason to do this is different for each cross strain. Sometimes it is to increase the yield, sometimes to increase the potency. It can also be used to strengthen the plant and to achieve a more consistent result.
Indicas tend to be shorter, stockier plants which have smaller, denser and much smellier buds. Indicas also flower much earlier than Sativas, usually with a 6-9 week flowering period.
Sativa strains will grow much bigger and the buds will be less compact. Some strains may take up to 90 days to mature.
Sexing Cannabis Seeds
Cannabis also evolved into both male and female species. Some plants also go hermaphrodite (both sexes) when stressed.
The female plant is the desired species for growing, and anything else, including seeds should be destroyed by the everyday grower. With a keen eye, anyone can easily sex cannabis seeds. Please Read Sexing Here
A question often asked by new growers is how to store seeds and how long do seeds in storage remain viable. Essentially the rules to follow are to keep your seeds in a cool dark place using an air tight container.
Some people believe that storing seeds in the freezer is the best way to keep them viable , however the freezing process itself ruptures cells that make up the seed which is why the recommendation is often accompanied with the warning that some seeds will be lost through the process. There are specially designed pieces of laboratory equipment which slowly bring the cell tissue to a freezing temperature however cost effectiveness and availability don't really make them a consideration for most.
If you do wish to use your freezer , place the seeds into an air tight or vacuum sealed container with a food grade desiccant satchel before putting them into the freezer.
A refrigerator is a suitable place to store your seeds though you have to remain cautious about moisture build-up as failure to do so can lead to the loss of your collection.
If you want to store your seeds in the fridge place the seeds into an air tight or vacuum sealed container with a food grade desiccant satchel or two before putting them into the fridge. This will help avoid the build up of moisture in the container.
Seeds stored in the fridge should remain viable for quite a few years , many have reported success after over 8-10 years storage. Though they will go off eventually and as time goes on you can expect the viability and rate of germination to slow until an eventual failure.
For storage lengths of a few years or less, room temperature storage in a dark cool area like a cupboard is satisfactory.
If you want to store your seeds at room temperature, place your seeds into an air tight or vacuum sealed container with a food grade desiccant satchel or two before putting them into a cool , dark place. This will help avoid the build up of moisture in the container.
Seeds stored at room temperature should remain viable for quite a few years so long as you use an airtight container. Though they will go off eventually and as time goes on you can expect the viability and rate of germination to slow until an eventual failure.
Hope that has answered a few initial questions , of course everyone has their own opinions on the topic so always look around for other peoples opinions as well.