The Sativa Seed Bank specialises in, you've guessed it, Sativa cannabis seeds. The sativa high is often characterised as uplifting and energetic . The effects of a sativa cannabis are mostly cerebral. They give a feeling of optimism and well-being, as well as providing a good measure of pain relief for certain symptoms. A few pure sativas are also very high in THC content. They are known to have a quite spacey, or hallucinogenic, effect. Sativas are a good choice for daytime smoking.