Purple?

Hey i planted about 20 seeds in two different pots outside about a week and a half ago and yesterday when i looked there were about 20-30 sproutings. I then noticed in a group of three were 3 purple plants one fully purple the other twwo with purple tips. Just wondering what this may be thanks the other ones look normal so far.

can you post any pics?

Strains react differently to their conditions. In a healthy plant, purple color expression is determined by genetics and then by the conditions being correct for that pigment to show. Low temperatures bring it out, as does application of PurpleMaxx/ SnowStorm. If that is the only weird thing about your plants, cool. If you see tip burn, it's more likely the sign of a soil problem.