There are a few ways to transplant ivy, depending on what you are working with. You have the option of taking a clipping of ivy from outdoors or another established indoor ivy and start rooting it yourself.
Getting a few roots with your clipping will greatly improve the clipping's ability to overcome the shock and start producing new growth. Or you can get an ivy from a store and transplant it to a new pot since the store pots are usually 4 inch pots or plant it in your outdoor garden.
Clipping Ivy Plants
You can easily start your own plant from a clipping. Remove all the leaves to about 1 to 2 inches up the vine from the clipped part.
Put some water in a glass (glass is preferred since it is clear and sunlight can get right to where the roots will sprout) and put the end of the clipping in the water. Leave this in a safe area where it will not get knocked over and that gets lots of sun. In a matter of about 2 weeks you will see roots starting to sprout.
Ivy Root Growth
To get a great start on hearty root growth when you transplant ivy dip about 1 inch of the clipped part into some root growth formula, available at garden centers and some hardware and department stores, and plant into hydrated seed growing dirt pucks.
Wait 10 to 14 days and you will see roots growing out the bottom of the dirt puck. This is the sign that they are ready to transplant.
Once the roots have grown about 1 to 2 inches long you can transplant your clipping into a small pot filled with good potting soil. Make sure all roots are in the hole before filling with dirt to maximize the chances of your clipping to become a luscious ivy plant.
Be sure to use a pot that has good drainage. You can also plant your new little plant outside in a good area and watch it grow quickly.