HEYBOT!
The Art of the Bonehead! How to Raise a Screw Tree!
S1 E4:
Heybot buys a mysterious screw seed off a mysterious woman. But although he and Nejiru put a lot of love into raising it, it ends up growing into one flat tree! Enlisting the help of the ninja Naganagamaru and his Stretchy-Stretchy screw, they manage to get the screw to grow... and grow... and it won't stop growing until it reaches the moon!