Hi TallyCat,
I'm wondering it you are talking about Cast Iron plant - Aspidistra elatior.* Is this what you have?
http://www.floridata.com/ref/A/aspi_ela.cfm
If so, prepare the new bed by adding 2" to 3" of compost and mix it in.* Plant, water and mulch.* They have a large root system so have a sturdy shovel.
You don't say which heather or heathers you will be growing.* Some like acid soil, some like the soil lean.* Do you know the name of your heather(s)?
Do your transplanting in the early morning if the temps have warmed up as this will cause less stress on your plants, but both of these are quite hardy and can take a bit of stress.
Newt
When weeding, the best way to make sure you are removing a weed and not a valuable plant is to pull on it. If it comes out of the ground easily, it is a valuable plant.