what plants are the best?

[Rockyyy5]

Hello everyone.
My mother has 3 rock gardens in our yard, but they are really old and look ugly. We want to destroy them and on their place create new ones. We wanted to ask you what plants are they best to rock gardens? We want something easy to grow and also looking amazing.

[Véronique Macrelle]

tancetum haradjanii
campanulla rotundifolia

[Maggi Young]

 Aquilegia -  for instance A, flabellata, Antennaria dioica , Alyssum spinosum, Aethionema, Cyclamen hederifolium, Dryas octopetala, dwarf Dianthus, small Erodium,  Gentiana acaulis,  Geranium sanguineum, Globularia cordifolia, Helianthemum,
dwarf Phlox, Polygala calcarea, Pulsatilla vulgaris,  Sempervivum,  Saxifraga,  Thymus......   a good few for you to choose  from there!