The main difference between indica and sativa is in the marijuana leaves. Sativa marijuana leaves are much smaller and thinner then Indica marijuana leaves. Indica is a short plant.  It's  marijuana leaves  have short, wide fingers and are deep green, often tinged with purple. At maturity, the leaves start to turn even darker purple. It has short branches laden with thick,  dense  marijuana buds, which mature early. Sativa cannabis plants grow very tall escpecially if grown outdoor. The  marijuana leaves  are  long  and  thin  fingered  and  are  light  green. The marijuana leaves of some varieties yellow and fall off during maturity. The marijuana plants have  long branches. The flowering cycle takes longer... » Read more