I purchased this small 3-1/2' tree last year and put it in the ground late last fall. It is so late in leafing out (just little nubs of green on the trunk - not even leaves yet - and we had such an early spring this year!), that I am reconsidering its location in my garden. My backyard, dominated by a 75 year old Norway spruce is small and it's to the north of my house. I just don't think the Albizia will get enough sun to achieve what I had hoped. I envisioned it growing quickly and creating an 8-10' diameter of umbrella of shade within three years. Clearly I am an optimist!! I am now thinking of putting it back into a pot and growing it as a lovely fern-like shrub that I can position in the sunniest part of the patio. I wont feel frustrated if it takes decades to reach 7 feet. Would any of you have experience in growing this particular plant in a container? Assuming it's possible, is it like a Japanese maple in that it's okay for the roots to be contained, or does it have a wide rooting habit? What kind of soil should I have in a container for this tree and how often should I expect to have to re-pot it. What size of pot? What kind of growth should I expect in the next 3, 5 and 10 years? Many thanks in advance for your advice.