how long can you keep mothers for

[bobby]

i have seen that some people have mother plants up to two tears old. can you keep them indefinately or do they start to decline

[Trichome Creator]

years. As long as you keep them in vegitative state. Cannabis can live as long as 12 years in perpetual light although in it's later years it will begin to decline. It does not keep growing either. It's height is set by the plants genetic code.

[bobby]

ok thanks for that,also what effect does pot ash have on plants. i was told to put it on during flowering. but i read here somewhere that for vegging you
want something high in nitrogen low in p-k for flowering you want something higher in p lower in N-K so whats the go