6 weeks into flowering, having a problem... help!

[Minnesnowta]

Ah.. perhaps phosphorus deficiency... or more than one thing I would say to be honest. The different angles in the pictures, at least to me, show a different variety of nutrient deficiency symptoms. Some of it looks like phosphorus, and some of it looks like Cal/Mg deficiencies. At any rate, I don't think we'll be able to give you a perfectly accurate answer to your problems.

[Minnesnowta]

Ah.. perhaps phosphorus deficiency... or more than one thing I would say to be honest. The different angles in the pictures, at least to me, show a different variety of nutrient deficiency symptoms. Some of it looks like phosphorus, and some of it looks like Cal/Mg deficiencies. At any rate, I don't think we'll be able to give you a perfectly accurate answer to your problems.

[drudown11]

what color are your stems?

[Minnesnowta]

drudown idk about you but I've noticed that stem color can sometimes be a poor indicator of phosphorus deficiencies. I am guessing thats why you're asking about the stem color? I think it varies greatly by strain. I have a strain that always grows with red stems and loves it, but it also doesn't have any purple color changes in the bud or anything like that without being forced.

However, stem color can definitely be an indication of that under the right circumstances.

[Geek]

+1 recommendation for the AzaMax! I had a nasty bout w/microscopic pests that couldn't be seen w/the naked eye. One thorough fogging of the plants w/the AzaMax 4 weeks before harvest, and not a single living mite to be found anywhere. :thumbsup:

[theforthdrive]

drudown idk about you but I've noticed that stem color can sometimes be a poor indicator of phosphorus deficiencies. I am guessing thats why you're asking about the stem color? I think it varies greatly by strain. I have a strain that always grows with red stems and loves it, but it also doesn't have any purple color changes in the bud or anything like that without being forced.

Its not always a deficiency! Pretty much any plant under stress with turn a purple/red color.... Having said that a deficient will cause stress. I do mostly hydro in rockwool so nute deficiencies are not real common for me but pest issues and liquid light both cause the stems to change!

[drudown11]

I do mostly hydro in rockwool so nute deficiencies are not real common for me but pest issues and liquid light both cause the stems to change!

I am in no way trying to be rude, im just trying to get clarificadtion before. Ive read quite a few books on cannabis and have been a very active forum member and Ive never heard of Pest damage causing red stems. If you could explain this i would appreciate it, i just want to hear opposite viewpoints.

Let me clarify what i mean by red stems.

Red Leaflets, the steams connecting leaves to the actual branches, are very common in cannabis and don't really mean anything except for genetic differences. Next time you take cuttings you may notice that they start out nice and green and over time they may start to turn red while your waiting for roots to form. The plant is using its stored nutrients in order to form adventitious, while becoming deficient in the process.

A lot of plants will show spoty reddening on the main stems, but I have grown hundreds of plants and never seen one that had full on red stems that were natural. When i see red stems in my garden I know that its one of two things, a nutrient defiency or a ph problem(which in turn causes a nutrient defiency).

If you have a strain that grows blood red stems while still maintaining vigor....plz post pictures so i can stare i wanna seeAttachment 283429

[theforthdrive]

For sure man, We are kinda stating the same point, I think. Correct me if Im wrong, you are stating that the red is from a nute issue or a ph issue. I am expanding and saying that its a sign of stress. Stress from a deficient, ph, pests, drought, and the excess metabolizing that liquid light causes.

Attachment 283435Attachment 283437Attachment 283436 last photo has no reding

For some reason a flush with azamax missed up a couple of plants. Other than lack of vigor in the leaves some blood red at the stem showed up.... in one of the pics another plant is still healthy and green. It didnt get stressed like the other two did. Not real sure why... I didnt mean active damage from pests, like one would see from mites. I meant that if one has nats the larvae feeding on the roots with stress the plant out. One way to see this is when that purple/red shows up. But its not limited to pest, just stress. I hope that helps!