Drop snail vine seeds into a container of water and soak them overnight.
Clear the growing site of vegetation and loosen the soil 4 to 6 inches deep.
Plant the snail vine seeds at a depth equal to half their diameter. Water until the soil feels damp.
Add additional water only when the top 1/2 inch of soil feels dry. Watering more causes the seedlings to rot.
Cut a 4- to 5-inch piece of the vine. Use sharp pruning shears and make a smooth cut.
Fill a 3 inch growing container with perlite and add enough water to moisten it evenly.
Pull the leaves from the lowest half of the cutting.
Dip the clipped end of the cutting in rooting compound.
Poke a hole in the perlite with a pencil so that the rooting compound isn't accidentally rubbed off the cutting. Insert the bottom 2 inches of the cutting into the perlite.
Slip the container into a clear plastic bag and seal it.
Move the container to a brightly lit area away but from direct sunlight.
Pull gently on the cutting every week until you feel resistance, which means roots are growing. Remove the container from the bag when this occurs.
Transplant the new snail vine to its permanent location before cold weather arrives.