Purple Buds

[white_cluster]

Plants go purple because of the breakdown of chlorophyll, and excessive anthocyanin build up.

It is mainly an environmental change, but sometimes can be genetic, some genetically purple strains are purple kush, purple northern lights, purple haze(1970's) and appalachian indica. These strains will show purple colouration in 50% of the plants, no matter the conditions. Purple colouration is a recessive genetic trait, so it can only ever be 50% true for purple colouration.

Some plants are genetically purple less so, meaning without frost they will not show purple colour but with frost all plants will show purple/black colouration. These are usually dutch indicas and can be jet black when dried. examples of strains like this are Purple Star, Passion #1 and dozens of other early dutch indica's.

Most strains in frost will show some purpleing. This is usually due to their afghani or colombian heritage.

 

If you want white buds add ice to your res when their ready. Keep the lights off and freeze them for 2 days to a week depends how white you want them. It will stop THC accumulation. But for a super-white white widow crop its pretty cool, the buds look so frosty its not funny. (shame that their really less frosty)