Hi Ven,

What does it look like? Does it look very porous? Does it look like the particle sizes are at least 1/16 to 1/8 inch big?

I have never seen that stuff before.

Do you have access to perlite?
Even a mix with just 'turface' and bark would be great for your tree.

Who told you that you had to repot now? I think it's a bit early if your tree seems to be doing fine thus far.

Mike

This is the one I first mentioned: the Hoffman bonsai mix. It feels pretty gritty too me.

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This other one has more organic materials and fine particles, I guess it really needs to be sifted, but it's still a bonsai mix.

My lemon has fine white roots showing thru the bottom holes of the nursery pot it came with when I bought it. Other than that it looks ok. It has 3 lemons and a lot of babies and flowers. It dropped quite a few of the bottom leaves at the beginning, they turned yellow and dropped. I assume this is normal, specially after moving from the nursery environment into my house. So, do you think I should repot?

What do you think.

i think the gritty mix is pretty much a knock out bonsai mix

here's another example:

http://www.amazon.com/gp/product/B004HMCR2G/ref=ox_sc_act_title_3?ie=UTF8&m=AG8OLTMV8PYLY