No, its no good. You have to buy the potato for planting.
Alugbati will grow in pot in the green house from seeds and lemon grass. Pechay will grow outside in summer time. I tried kangkong,okra, sitao and etc., they germinate but they will not grow they slowly died.
Will you can try papaya,plant it in a big pot and put it in the green house.
Actually if you got a big green house and high enough and have a heater and maintain a temperature of 24 degree in the winter I think the tropical plants will survive.