Why are these leaves yellow?

[bodhi]

Are these leaves yellowing? What could cause that? Or is that normal for little baby leaves.

[callisto9]

I've found it can be normal. Several of my new stuff had a little yellow when they were first growing. I think you're ok.

[Bobbie]

Yellow leqves can be a sign of chlorosis, which is a kind of nutrient imbalance.  AG suggests switching to distilled (NOT spring) water. 

[msopinionated]

My salsa garden tomatoes have some yellow leaves, but only on one stem on each plant, the yellow is surrounded by green. No issues with my pepper plant, and the rest of the tomato plants are super green.

Cynthia

[drdave501]

 
     Good day Bodhi,
      Like Bobbie said, it could be chlorosis, and distilled water could help. It seems that only the plant on the left side is affected.  You need to thin tomato plants anyway so take out the one on the left.  When you planted, did you put these guys on full strength nutrients?  The starter nutes are a weaker concentration, it seems some plants are more sensitive to this than others.  If on full strength nutrients dump out half the water and refill.  This should thin the mixture.  Here is a link on chlorosis.

http://plantclinic.cornell.edu/FactSheets/microchlorosis/microchlorosis.htm