..Had to look this up....
In Aug.,2007 I grew the Grandpa Ott MG in the corner by my Sweet Surrender Rose.
It grew up to the second story windows. VERY aggressive!
To this day--almost 10 years old seeds from it continue sprouting every year.
I pull them all out--as, otherwise, the vine would grow into my big Azalea bush
or travel around my poor Multi-Blue Clematis, which is, by now, almost dead.
I think MG seeds last forever.....
