Purple Stems

[bigDAWG]

Ok I have a question, not a serious question but..

Why do some plants have purple stems? The weird thing is that not all of my plants stems are purple maybe like half of them. Half I'd say are a nice DARK purple and the rest are bright green. Same thing with the main cola, Its green, fades into purple, green again, then purple, and then green.

I read a thread about this and people were saying it was some sort of deficiency but I can guarantee my plant couldnt be any healthier. My leaves are not purple (so its not temperature) and the bud sites aren't purple yet either (not saying they ever will be) And when I bought the clone at the shop they said it was Platinum bubba kush.

Another question..anyone smoked platinum bubba kush? Is it nice?

 

[neef]

i know exactly what you mean. my hydro has that same thing goin on but the same strain in soil doesnt have it.

 

[bigDAWG]

i know exactly what you mean. my hydro has that same thing goin on but the same strain in soil doesnt have it.

Oh ok.. Yeah, I only have 1 plant and it's in Soil. Its just some of the stems are green and some are purple.

 

[neef]

i just saw it on one of fdd's picture of his 09 crop. so it must be normal.

 

[bigDAWG]

I saw some similiar grow pics as well. guess nobody really has any input

 

[neef]

i found the problem!!!

Phosphorus (P) deficiency:
Figure 11 is severe phosphorus (P) deficiency during flowering. Fan leaves are dark green or red/purple, and may turn yellow. Leaves may curl under, go brown and die. Small-formed buds are another main symptom.
Phosphorus deficiencies exhibit slow growing, weak and stunted plants with dark green or purple pigmentation in older leaves and stems.
Some deficiency during flowering is normal, but too much shouldn't be tolerated. Red petioles and stems are a normal, genetic characteristic for many varieties, plus it can also be a co-symptom of N, K, and Mg-deficiencies, so red stems are not a foolproof sign of P-deficiency. Too much P can lead to iron deficiency.
Purpling: accumulation of anthocyanin pigments; causes an overall dark green color with a purple, red, or blue tint, and is the common sign of phosphate deficiency. Some plant species and varieties respond to phosphate deficiency by yellowing instead of purpling. Purpling is natural to some healthy ornamentals.