[oldestschool]

So many firsts for me. 1st grow In tent, 1st led’s, 1st time with purple

I so excited 😊

[nbargen]

Deficiencies in Phosphorus and or magnesium is usually the problem in my indoor grow with LED lights. Potassium def could be the issue as well.

[ohigrow]

Maybe…

https://2fast4buds.com/news/all-you-need-to-know-about-red-stems-on-cannabis-plants

2fast4buds.com

Comprehensive Guide to Red and Purple Cannabis Stems: Causes, Solutions, and When to Worry | Fast Buds

Interested in knowing why some cannabis plants have red stems? Learn all you need to know about colorful stems and what causes cannabis plants to exhibit them.

[burny]

Purple in the stems can mean alot of things. It can be genetics, environmental, or nutritional. LEDs with UV light can cause purple stems.

[m1ghtym0u3e]

Streaks can be genetics, everything means you got problems.

[flowerpower]

Keep in mind that some strains produce purple stems because of their genetics. If your plant is otherwise healthy you probably don’t have to worry. Anthocyanin Is responsilbe for the purple stems, and is responsible for coloration of many plants. It can express as reds, blacks, blue, and purple coloration.

The most common purple problems come from hydroponics nutrients disorders and root zone issues. Phosphorus and magnesium lockout or deficiencies are at the top of the list.

Purple stems can also come from nitrogen or potassium deficiencies or lockouts.

Nutrients issues can be frustratingly complicated. The purple coloring can also be a response to light or heat stress.

[ZoomyCat]

Just to put it out there. It is possible it is a PH issue and that prevents uptake of nutrients.

So people saying its nutrient issues are on point, But its usually due to PH issues. I made a post showing my Lemon Balm doing the same thing. it got put in a tent that was too hot and the VPD went way out of whack and the stems purpled up and all those leaves died off pretty much.

[ZoomyCat]

Colors from what I’ve been told come out through cold temperatures. So if you want colorful flowers and your Cultivar has a color in its name. You can bring it out that way.

This will also change the flavor/composition of the buds of course. I’ve had friends say they don’t like colorful buds due to their effects.

• This reply was modified 3 weeks, 2 days ago by  ZoomyCat. Reason: Added info on flavor and effects changing