Plants stem purple

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Bizzy323Bizzy

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Hello anyone have a idea why they turn all purple and yellow in 2-3 days after transfering them to flower room. Could it be because of cold?
 

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what are you feeding them and how cold is it...plants look stressed...did you hit them heavy with flower nutes...cal mag will help the yellowing...
 
what are you feeding them and how cold is it...plants look stressed...did you hit them heavy with flower nutes...cal mag will help the yellowing...
oR IS IT BELOW 70 DEGS
 
How much water did they get, could be over watering or even under watering but I think you said they were just transplanted too
Looks like shock and a feed or ph problem on top of the temp swing
 
overwatered and heat is to low and you need some fans to move the air
 
Yes they got moved from a warm humid veg room

The plants are going thru a bunch of confusion atm.. up potting them, new environment, new light schedule.. this is all normal stress.. Idea is to keep it to a minimum and get them to recover quickly.

Next time you go to flip them, begin feeding them flowering nutrients a week before so as soon as you flip them they have more P & K avail as needed.. then calmag right away. these will help curve this purple stem issue a wee bit, but don't over react either.. luck
 
The purple coloration in plants is caused by anthocyanin, a photoprotective pigment. The plant produces this naturally, and increases production during temperature extremes. Anthocyanin absorbs light energy as heat. This serves to warm the plant when it is cold, and to cool the plant when it is hot.

Like most things, purpling can be caused by many factors. Genetics, temperature fluctuations, and overfeeding can increase anthocyanin production, or suppress masking chlorophyll production.

Try to make every transition as gradual as possible so your plants have time to adjust.
 
Just like the leaves on my Bradford Pear. In the winter they turn a purple color.
 
Yeah but those are little blue berries. 😁
 

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