I have an old plant that i have kept alive for 3 years now,shes just been seeded once again and i will get a few smokes off of her and about 100 seeds.
The plants are not as strong as when they are young this is true and you cannot expect the same from them as when they are young and healthy but they are great at making fat large seeds and still worth smoking whats left.
I am going to let this girl die this year as she is very tired now i think,3 years is a long time for a weed plant.
I have taken 3 crops a year off of her for 3 years so this is her 9th time flowering lol she is tired.
Heres a pic of her from a few weeks ago and i will take a pic in a minute and post it