Typicaly speaking, sativa leaves have longer andthinner blades while indicas have shorter and broader blades. Also sativas usualy grow taller, lankier more branching plants as opposed to the squatter, more compact idicas. There are many exceptions to these basic rules. Hybrids can express any combination of these.

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Don't incarcerate self sufficient sick people. I grow cannabis for ulcerative colitis and to relax. http://www.rollitup.org/grow-journal...ganic-s-c.html