Fertilizing Zelkova seedling

[WetCoast]

I have a Zelkova seedling which germinated a couple of weeks ago. When should I begin fertilizing it? And with what? Thanks in advance for any advice.

 

[cmeg1]

You can begin fertilizing when first two leaves harden.

 

[Eric Group]

I have a Zelkova seedling which germinated a couple of weeks ago. When should I begin fertilizing it? And with what? Thanks in advance for any advice.

Start with some mild organic slow release stuff.