In this list of most pure sativa strains you can look up and compare the original landrace seeds coming from equatorial regions - Thai, Mexican and African sativas, including Haze. Although not the best choice for indoors, pure sativa strains can be grown 12 12 from seed which shortens veg if not flowering time. Due to their 100 percent pure sativa genetics, these feminized and regular cannabis seeds grow into very tall plants. Some common pure sativa strains like Durban Poison are less demanding and can be successfully grown both outdoors and indoors. By browsing through our list of pure sativa strains and reading grow journals, reviews and smoke reports, you can learn about their effects and find a top 100 percent sativa strain to buy.