How long does a plant live?
Mine is age 1028 now, the plant itself looks like dead but the flowers are still blooming.

I really don't think there's a limit to how long plants can live, as long as you keep them watered and free of disease. I don't usually keep my plants for very long, since the only thing they are good for after they have produced their batch of seeds is for pollinating other plants (which I can do with new plants). Since there are only 15 pots, I usually make the seeds I want, sell the current batch of plants, and plant all new seeds.

The plant looks dead but it have flowers? If i were you, trash it. Those plants are a real disaster (and sometimes, a real wonder) but only certain plants like these change the game for good.

The oldest plant i have by normal process haves 8412, but the infestations on it are very common.