Beginners can grow cannabis seeds relatively quickly, but some strains are more difficult to grow than others. Some of the easiest cannabis seeds to grow are delicate and require much attention or are vulnerable to disease or mold, whereas others are resilient and can survive without water for a day or two. BLUE DREAM Blue Dream is a Sativa-dominant strain. AK-47 AK-47 has a lineage that you can trace back to four top-quality landraces. Also, it cannot be overlooked by cannabis growers. CRITICAL MASS Critical Mass cannabis is ideal for novice cultivators. It has strong cannabinoids, which is one of the reasons for its popularity.