Cut your bought or home grown spring onions about 3cm (1in) above the root. Use the leaves in cooking and add the stem/roots to a glass with clean water to rehydrate roots. Change water daily & keep in a well lit position such as a windowsill or kitchen bench. Watch green leaves regrow.
Basically, a hard thwack to the balls would do the trick.   Also, a man could stop producing sperm because â¦of a hormone imbalance, especially age related.     Men never stop making spermatazoa after the onset of puberty, as long as their testicles remain intact.
Â· just now. 1  men stop producing fertile sperm about the time they die, in other words a man could produce a child as long as everything else is working good. A woman on the other had stops having her period when she goes through menopause, which is any time from about the age of 40 - late 50s.