Help needed. Nutrient deficiency I think?

I cant seem to find anything like this. All the purpling I've seen usually starts at the bottom and works its way up but this is all only on the new growth at the top bud sites. I have a variety of strains but its only doing it on my blue dream girls. Thanks in advance for anyone that can help.

you need to write more about what the soil the plant is in or what hydro method you use, and what nutrients if any you're giving and how much and the pH and ppm of said nutrients. room temp and lighting might be helpful. just a pic isn't enough.

Sorry about that. They are outside, northern California weather. High 60s during the day and low to mid 50s at night. Fox farm ocean forest soil, feeding maxsea once every 10 days or so and water is ph'd around 6.5 every watering.

you don't need the extra fert, at least for many weeks anyway. growing under the sun, plants can get to 20 feet tall. but it might be best to dig a large hole, fill it will ocean forest and nothing else. see what happens.

tjjohnson said:

Sorry about that. They are outside, northern California weather. High 60s during the day and low to mid 50s at night. Fox farm ocean forest soil, feeding maxsea once every 10 days or so and water is ph'd around 6.5 every watering.

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That's very, very cold. There are many strains of marijuana that actually turn purple in colder temperatures. It could be just that and nothing more. Proceed with extreme caution. Just let it grow for a bit and do nothing. If the leaves look fine structurally, but are simply purple tinted, you're good to go. It's just the cold doing it.

I was under the impression that blue dream doesn't turn purple like that but they are the only ones doing it. Guess I'll jus keep am eye on them and see how they turn out