Hash Heaven 50/50 Indica-Sativa stain utilizes Hash Plant allowing it to pull away from the rest of the competition. In addition to Hash Plant, Hash Heaven strain also has G -13 Haze and Hash Heaven in it’s genetics. Growers need to have some experience, and indoor climates are ideal. If grown outdoors, a tropical climate would be ideal. Hash Heaven experience relaxes even the most serious-minded patient. Give this stain time to set in as it known to have a creeping effect. Chronic pain is definitely no match for Hash Heaven, as many people enjoy this strain for their medical needs. Growing Hash Heaven Marijuana Has Medical Benefits.