Choice of plants for a cemetery plot

I have been advised that the following list of perennials are acceptable for our cemetery plot.
Could you advise which is the hardiest or indeed the best choice, not sure how good availability is for any of them
African Lily, Bears Breeches, Columbine, Cranesbill, Elephants Ears, Foxglove, Hardy Forget- me- not, Ice Plant, Jacobs Ladder, Ladys Mantle, Lupin, Musk Mallow, Primrose, Red Hot Poker.

the cemetery site will be returned to nature, which is why the restrictions
Thank you

 

I take it you are looking for something that will thrive when the area is naturalised?
Not something I know much about but I'm sure others will help.

 

If the grass isn't cut at all I'd probably go with canesbill ( geranium ) lots to pick from reliable and unlikely to be pushed out by others . if the soil is sandy the bears breeches ( Acanthus ) can make quite a statement and smoother its neighbours when established .

The only ones on your list I'd consider are the two I've mentioned and Combine ( Aquilegia ) - elephant ears (Bergenia ) / foxgloves / ladys mantle / primroses