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Purple Stems in Cannabis (Red Stems in Cannabis)

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Bulls
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Purple Stems in Cannabis (Red Stems in Cannabis)

Post by Bulls »

When a cannabis plant or seedling has a purple stem without any other signs of problems, it is often the result of genetics. However, sometimes you'll see red stems which can sometimes be caused by stress, environment or pH problems. Don't rush and make massive changes if your plant otherwise grows fast and healthy.



If there are no other symptoms and the rest of the plant is growing fast and healthy, red stems usually aren't a big deal. Often stems turn green on their own. As long as you're continuing to take good care of your plant and responding quickly to any other problems, you should be okay.


If you believe there is a nutrient problem with your cannabis plant, for example if your plant is also growing slowly or the leaves are discolored, then the plant may be suffering from:

Incorrect pH – The pH being too high or too low at the roots is the most common reason to see purple or red stems! (or any deficiency)

Magnesium deficiency can cause purple stems. A good cannabis-friendly nutrient system has a significant amount of magnesium, but if you're using very soft water, or RO water, you may need to add a Cal-Mag to your nutrient regimen.

Temperature – heat or especially cold can trigger red stems in some places

Humidity – very high or low humidity can stress plants (especially young seedlings)

Other types of stress such as light burn, transplant shock, or overwatering can trigger red stems
Sometimes you'll never know why and plants just grow out of it 🙂
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TTL11 (Wed Apr 29, 2020 12:51 am)
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Re: Purple Stems in Cannabis (Red Stems in Cannabis)

Post by WeedJunkie »

Great read buddy


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Bulls (Sat May 02, 2020 5:26 am)

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Re: Purple Stems in Cannabis (Red Stems in Cannabis)

Post by Viz »

Good information Bulls.
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Bulls (Sat May 02, 2020 5:26 am)
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Re: Purple Stems in Cannabis (Red Stems in Cannabis)

Post by MrNice »

Bulls very intresting read
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Bulls (Sat May 02, 2020 5:26 am)

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Re: Purple Stems in Cannabis (Red Stems in Cannabis)

Post by captain beefheart »

i seem to think you forgot to mention to much P /K in flower / over feeding at any stage during the grow ? :Stoned:
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Bulls (Sat May 02, 2020 5:27 am) • GMO (Sun May 03, 2020 6:36 am)

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Re: Purple Stems in Cannabis (Red Stems in Cannabis)

Post by Bulls »

I just haven't expirienced that myself Captain, hence I haven't added it to the list. If you're sure and you've expirienced that yourself I'd happily add it to the list brother.
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GMO (Sun May 03, 2020 6:36 am)
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