I own a jade that is now over 15 years old .......when I first bought it I planted it in a decrorative vase over the years I never transplanted it because I thought the material the container was made of was magic.......now I have about 6 upright stems where there was once 1 and it is over 2 feet ....I recently noted that the plant is sending out air roots ....does this mean it shoud be repotted?