マータイさんって「もったいない」っていう言葉を世界に広めた人なんだよね。。
日本語にしかないらしいよ。。。このニュアンス。。。

これステキですね。
でも、大きくなったら、どうするのでしょ〜。

でかい鉢にうつしかえてね。と書いてあります。。。

http://www.babytree.info/catalog/faq.php?language=en

How to pot your Babytree ?
The babytree do not like the extreme temperatures or the sudden changes of temperature. Take care not to leave it When your babytree grows, you will be able to replant it in a terra cotta pot according to following indications :

Delicately separate the capsule from its base, by taking care well not to damage neither the plant nor the roots.
Use a toothpick where tweezers to extract the small transparent lid which retains the ground.
Prepare a hole in the ground of your new pot (3 to 4 times larger than the "cradle" of origin) to accomodate your plant.
Deposit your plant there, slightly cover it with a little ground, pack end of the fingers and sprinkle moderately.
To ensure long life your plant, ask council your florist.

Here it is the party for a new life.