Salvia verticillata ‘Purple Rain’ (meadow sage ‘Purple Rain’)

Salvia x sylvestris ‘Blue Hill’ (meadow sage ‘Blue Hill’)

Salvia x sylvestris ‘Rhapsody in Blue’ (wood sage ‘Rhapsody in Blue’)

Salvia x sylvestris ‘Rugen’ (meadow sage ‘Rugen’)

Salvia yangii ‘Little Spire’ (Russian sage ‘Little Spire’)

Saponaria x lempergii ‘Max Frei’ (soapwort ‘Max Frei’)

Scilla mischtkenkoana (Tubergen squill)

Sesleria x ‘Greenlee Hybrid’ (Greenlee’s moor grass)

Sporobolus heterolepis (prairie dropseed)

Stachys officinalis ‘Rosea’ (betony ‘Rosea’)