Pattie, guess no one has an answer..lol.
I've never sown seeds from the 3 plants you mentioned..
If one of the seeds are larger, the size of a Morning Glory, it'll root faster if knicked.
I've never sowed seeds in a baggie, but heard it works.
I prefer Peat Pellets..do you know what Peat Pellets are? They're little round, flat disks..soak in warm water about 10 minutes..disks expand. The top of pellet has a hole..Seed is placed in the hole. If seed is large, cover with sand. If small, leaves as is. Set pellets in a tray, water or spray area where seeds are inserted. Cover with plastic until germination. After seedlings are about 2" or more, remove cover. Set pellet and plant in a pot..you don't remove seedling from the pellet. Add appropiate soil when filling container. Set plants in light.

Pellets are soil-less, so a well-dilluted ferilizer helps speed up germination. I also use Superthrive.
Good luck, Toni

Hi Pattie!
Sorry but I'm terrible with remembering latin names of plants! Do you know what the common names are?
You might want to check out the seed growing forums and post there as well. Good luck! :)