You can get seeds many ways. If you’re fortunate enough to have some weed that you like which has seeds in it, there you go. All you have to do is clean the marijuana and extract the seeds. Unfortunately, most weed these days comes without seeds. We don’t even call it sinsemilla anymore, because 99% of weed comes without seeds .
You can buy seeds, of course. In some countries you can buy them over the counter. They’re also sold in magazines or on the web. Buying seeds gives you much greater choice. However, it may be illegal, so check your local laws.
However you do it, you end up with some marijuana seeds.
Different types of marijuana produce different seeds. Some are fat, round balls. They can also be tiny. Some are dark. Some are light. They can come spotted and dotted. They can have stripes or look camouflaged.
What is important is that they are genetically mature seeds. The husks should be hard and should not crush easily (don’t try hard to crush them – you can crush good seeds with your fingernails).
If the seeds are small and bright green they are likely immature.