plants have red color

i have 4 nirvanna snow white plants going ,there doing great.i noticed 2 of the plants have normal green stems and branches and the other two have a red tint to the stems and branches.all plants planted in the same medium,and same age.3 weeks into veg.could this be a difference in the sex of plants?or common with this strain? anybody have this experience?thanks!

yes sometimes, dependent on strain, you will see, reddish orange stems, my blueberrys and o.g. kush 18's are similar... i don't think its a difference in sex though....

definitely not a difference in sex. what is your average temp range for your room? lights on/lights off. plants will adapt to the climate any way possible. with lower temps the plants will produce sugars that tent to stick to matter below the skin of the branch changing the color a bit. difference in coloration will vary with lower temps. some coloration may even turn dark purple. some plants are naturally stronger and will not have to addapt as much and some may stay green.

just an update ,the two red colored plants have turned green.they are taller and less bushy than the other two.it looks like they may be males but too early to tell.

update : all plants are females yessssssssssss!!!!