It grows wild along the road down here, but I wouldn't call it an invasive. It probably wouldn't be invasive in zone 7. I'm sorry I don't have any seeds to share at this time. We had one in the yard, but it died.

here is photo:

My plant is in a large container (20 to 25 gal. size) against a wall. I cut it back but I can't actually remember if it died back or not after that. It's been green and growing for a while. Shoots keep coming up around the pot. I think I dug 3 for the swap, and there's 2 or 3 more up. I bought it at Natives of Texas in October 2011 and didn't get flowers last year, although the plant did grow a lot.

Okie doke...As it turns out those banana plants werent exactly as rooted as I thought they were and when I cut them from mama banana...well they wont be at the swap..sorry bout that guys. But I got some new things to add...this is the revised list: Gerbera daisies(orange, red, pink, yellow, and unknown) patty and donna Dragonfruit cuttings-patty and donna Selenicereus antonyanus(aka ric rac cactus) cuttings-donna,plant-patty Aporophyllum flagelliformis cuttings-rattail cactus White rain lily bulbs desert willow seeds trichocereus pups-donna trichocereus-patty worm castings worms zexmenia transplants Moy Grande hibiscus seeds(Im not sure if grow true to type...anyone wanna experiment?) Passiflora foetida seeds striped crinum bulb unknown crinum bulb anyone want the common trumpet creeper? I got a whole bunch of it Also I got some more cactus and succulent soil. I know I swapped it last year with someone but not sure if yall actually liked it? Patty...Id love some mexican flame vine, bulbispermum crinum or soap aloe.