However, once germinated, cannabis seeds become illegal in many countries. Temperature Although cannabis plants are adaptive to different weather conditions, they are susceptible to extreme temperatures. wide Sun exposure Full Soil type Dry, well-drained Soil pH Acidic, neutral Bloom time Summer Flower color Orange, yellow Hardiness zones 3 9 USDA Native area North America Toxicity Mildly toxic to animals and humans.  Source: <a href="http://smart2water.com/division-of-agriculture-noxious-weed-seed-laws/" / rel="nofollow">http://smart2water.com/division-of-agriculture-noxious-weed-seed-laws/</a>