That depends on where you grow it and where, specify please.
They grow as much as 4.5 cm year. But colonies of coral grow as much as 10 cm a year
20 million grow in a year
id say 6. maybe 7
ALOT
they grow so much food because Japan has great weather for their crops and Japan has speacial tequniques to make sure the crops grow perfectly.
no land to grow crops
However much their owners gave them, although some were expected to grow some of their food for themselves.
If you eat a healthy diet they can grow 12 feet
Nails grow at a rate of about 2cm per year.
an inch and a half.
_
It grows about 15cm a year if you don't cut it.