Stem Coloration

[monkaj]

Noticing a few of my plants have this dark coloration up the stem, is this normal or a problem with my care? First year growing. Thanks
 
 
[img]http://postimg.org/image/69uf1nxez//img]

 

[queequeg152]

completely normal. especially in annums.

 

[hogleg]

+1 normal. Welcome to THP

 

[mpicante]

I must agree quite normal.