I rinse the leaves and then put them inside a ziplock bag, which I microwave for a minute. Then I open the bag to let the air out (be careful, it's very hot). I then microwave two more times for 30 seconds each, opening the bag in between to letthe air out.
wash the leaves in a 10% bleach solution scrubbing the leaves with your fingers (I didnt do this which was probably why i got infested)
boil, microwave, and bake til dry and crisp @ 300 degrees
when you microwave them put them in a bowl with a bit of water in the bottom and microwave at about 3 5min intervals checking the leaves and water.
you could also try getting some steam bags....they make some for sterilizing baby bottles and whatnot...I used them for my daughters stuff. got em at Target.
leave the leaves in the tank for a bit and if you see any inhabitants pop up the you can co2 bomb the tank
and no I wouldn't use the seed/flower bulbs in the viv