The tray with the rocks is included with the Gardenia Bonsai plant.
mine did NOT do well inside.
Not sure, but my problem was that I had the plant indoors and I guess they need outdoor sunlight. Mine actually died before I could save it.
4 1/2 inches by 7 inches maybe
NO.. it comes clearly tagged outside plant and water daily. Also in the description someplace as well as if you filter outside bonsai. I wish. Mine came inside for about 2 weeks and stalled . But was fine again outside. Very pretty little trees if you live in the subtropics.
Blooms in June
It can, but sunlight 4-6 hours per day is best.
Yes, you may replant this in a 10" potter.