I planted 3 Jerusalem artichokes (relatives of sunflowers but with edible tubers) two years ago. Last year we had bushfires around us and 50-degree heat and no rain all Summer. Today -- middle of Summer, hot and rainless I notice there are about 100 of them. Over 6 feet tall with little yellow flowers on top. AND they're marching on through the vegetable garden like a tribe of Trifids.
I've got those tomatoes too, Bobert. Wonderful taste. Mine are Black Russians, but they're purplish.
Cheers, Joy