expression, godan verb (-tsu)
nature itself is a good mother; even without parents, children grow up
Proverb meaning that children will grow up even without parental care, implying that nature or the environment will provide. Often used to reassure or to note the resilience of children.
親はなくても子は育つというから、あまり心配しなくても大丈夫だよ。
They say 'even without parents, children grow up,' so you don't need to worry too much.
A traditional Japanese proverb. The exact origin is uncertain, but it reflects a common folk belief in the natural resilience of children.