hay wusup tiff? to answer ya question most weed plants have puple stems, really purple is a color trait all weed strains have some where in their gene pool
my grow: http://www.rollitup.org/general-marijuana-growing/186814-look-me-now-wow-5.html
my grow: http://www.rollitup.org/general-marijuana-growing/186814-look-me-now-wow-5.html