Campanula 'Blue Heron'

Dianthus 'Red Penny'

Echinocereus

Sweet peas -- Lathyrus annuus

Peonies -- Paeonia lactiflora

Joseph Tychonievich, Rock Gardening: Reimagining a Classic Style (Timber Press, 2016).

Hostas: Fire Island, Sum and Substance, Blue Mouse Ears, Empress Wu, Devil’s Advocate, Halcyon.

Heucheras, oxalis, lysomachia

Mountain laurel -- Kalmia latifolia

Winter-growing gladiolus -- Joseph really like gladiolus alatus

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