303 Seeds from Colorado are an organization that specialises in creating medical marijuana strains. They use good old fashioned breeding techniques and have developed an excellent reputation amongst the medical marijuana community in Colorado and beyond.With Bio-Chem 303 Seeds have created a very potent strain using tried and tested genetics. By using a mother from the infamous U.S. Chem Dawg line and an F1 father of their own hard hitter, Bio-Diesel, the offspring is pretty much assured to be a highly potent beast. 303 claim that THC levels can break the 30% barrier and, although we find this a little overly optimistic, there is no doubting that this is a strain that is not for novices or the feint hearted.Bio-Chem will take around 70 days and more to fully mature, but we think you will find that she is worth it. Buds are extremely productive in trichomes which means that the hash/wax/oil/budder makers will be very happy with the results.Although genetically an indica dominant hybrid, there is a lot of sativa in the growth patterns here. You can expect quite a bit of stretch and may need to employ some training techniques to keep her under control, especially if space is an issue in your growing area. 303 state that this is a strain that is suitable for moderate level growers who already have some experience of growing weed.StrainIndica dominantSeed OriginChemDawg #4 X Bio-Diesel F1Seed Breeder303 SeedsAuto Flower Seeds AvailableNoFeminized Seeds AvailableNoGrow IndoorsYesGrow OutdoorYesYieldHighHeight IndoorsmediumHeight OutdoorstallFlowering Period9 - 11 weeksHarvest OutdooroctoberTHC LevelHighStoned or HighbothGrow DifficultymediumAwardsNoneWhy buy 303 – Bio-Chem Marijuana Seeds here?Since 1999 we have dealt with over 30 international seed banks and we only trust these guys. Our trusted partners offer excellent prices on fresh brand name seeds, great support and will make sure your delivery arrives discreetly worldwide.Buy 710 Genetics – Blue Chemdawg Fem Seeds – Worldwide DeliveryBuy Auto – Chemdog Autoflowering Feminised SeedsBuy Advanced – Auto Biodiesel Mass Fem Seeds – Discreet DeliveryBuy Chemdog Feminized Marijuana SeedsFrom the forumInorganic growingInorganic growingCurious about inorganic growing5 Steps To Growing Marijuana Indoors for Dummies! [Infographic]Anything I can do better?