are there any plants that can grow more than one year? what is the longest life?
Yes, indeterminates will live over the Winter in Frost free areas. I have no idea how long that could go on. LInda
We had tomatoes in the greenhouse for over a year and a green pepper plant for over two years. They really didn't produce in the winter, just stayed alive.
Indeterminate varieties will live until frost or disease or neglect kills them. Determinate varieties average 90 days with good care and no disease.
Dave - is that 90 days from seed or transplant? My Glaciers are still producing though I don't think they're growing any taller. I keep waiting for them all to ripen and die so I can plant more peppers there!
To the OP - I think there is a gigantic tomato plant in Epcot Center that is several years old. Of course they have a huge trellis for it and I think it's grown hydroponically so they're pumping all sorts of fertilizer into it.
Not I said "average" and it is from transplant.
A tomato farmer told me tomatoes are actually bienniels. They produce fruit the first year (obviously) but if they don't die or freeze, will continue producing another year.
Bienniels? Not really. Look up the definition of a biennial plant. ;)
Indeterminate varieties, yes they will live for several years given the right conditions and will develop fruit every year. Determinate varieties, no.