Last season I successfully rooted an ambitious air layer on a black mission tree. I left a large canopy and was concerned that the roots wouldn't support it. I potted it and there was some die-back but the bulk survived. I'm getting ready to repot it now and would like to plant it 6-8 inches deeper than it is now with the thinking that it will put out more roots from the buried trunk. Is this correct thinking or is there a danger to planting it this much deeper? Thanks for your help all?

I meant thanks for your help all!!!!!!!!!!

Hi Zeitgeist.  Recommend plant at the same soil level you have it now. Figs, when in a good environment, are aggressive rooters, but are susceptible to rot, so best not to bury trunk, especially if young wood -- it will manage itself.  If you are moving to a bigger pot, you can leave 4" of space in the top of the pot to add thin layers of bark, mulch or amendments later on. Just giving the tree more space to grow will make a huge difference in performance - the plants I left in 3 gallons last year didnt do much, but the ones I moved to 10-15 gal pots near tripled in size.  

Thank you for the advice! I will do that.