The best purple strain in the world is just Afghanistan, pure Indica. Grown in the mountains in the southern united states, and left right up to frost it is pure purple, not like a lot of the bluer hues from some of the fancy named breeds. You can also grow it indoors, but the cooler nights are necessary for the purple color.
As far as strength goes, I agree that color is no indication of strength, but the strongest buds I've ever encountered have all been purple. I will also say that I have grown the same indica strain in the mountains, and simultaneously in the foothills of the Appalachians, and the mountainous ones were more purple. As far as strength of the two I can't say there's much difference, but the more purple stuff grown in the mountains has more of a dry lung expansion/exploding ass kicking cough your brains out, drool all over yourself kind of hit for some reason.
scrumby Reviewed by scrumby on . How To Grow Purple Bud? how can I grow purple bud? Grand Daddy Purps and Purple Erkle are clone only strains and all the other solid purple strans are outdoor. There are a few options like blueberry and some others but they only have a slight tint of purple. What strain would possibly cure to look like these buds? PURPLE POTThe color of kings can add a royal flush to your herb. :: hightimes.com GRAPES OF WRATH From Purple Urkel to Grape Ape to Lavender, violet-colored cannabis varieties have piqued the Rating: 5