| Hi Alison, I am new too! And also want to make topiaries. It sounds like you have some pretty unique and fun ideas. If you stuff it with moss and use ivy you will get more instant gratification from the moss sculpture rather than waiting for a form to fill with a shrub. Though I would like to point out that I think Ivy is evil! I am sure I will hear it, posting this on a topiary forum. But I will share anyway. Ivy is a highly invasive plant contained in a pot for topiaries it can be very lovely however if it is left unchecked the results are dreadful. It is fast growing and takes down trees and is almost impossible to get rid of once established. I am constantly struggling with it invading my yard and garden from my neighbor’s yard, which is entirely ivy! Have fun, Annette |