| Add to Export List | Image | Common Name | Scientific Name | Cultivar/Variety | Plant Type |
|---|---|---|---|---|---|
| Add To List Remove From List | Ruby Stella Daylily | Hemerocallis | 'Ruby Stella' | Hardy perennial | |
| Add To List Remove From List | Ruby Wedding Masterwort | Astrantia major | 'Ruby Wedding' | Hardy perennial | |
| Add To List Remove From List | Rubyfrost Maple | Acer rubrum | 'Polara' | Deciduous tree | |
| Add To List Remove From List | Rue Anemone | Anemonella thalictroides | Hardy perennial | ||
| Add To List Remove From List | Ruffled Apricot Daylily | Hemerocallis | 'Ruffled Apricot' | Hardy perennial | |
| Add To List Remove From List | Ruffled Velvet Siberian Iris | Iris sibirica | 'Ruffled Velvet' | Hardy perennial | |
| Add To List Remove From List | Rugosa Rose | Rosa rugosa | Deciduous shrub | ||
| Add To List Remove From List | Rumba Weigela | Weigela florida | 'Rumba' | Deciduous shrub | |
| Add To List Remove From List | Running serviceberry | Amelanchier stolonifera | Deciduous shrub | ||
| Add To List Remove From List | Rushmore Arborvitae | Thuja occidentalis | 'Rushmore' | Evergreen shrub | |
| Add To List Remove From List | Russell Hybrid Lupine | Lupinus perennis | Hardy perennial | ||
| Add To List Remove From List | Russian Cypress | Microbiota decussata | Evergreen shrub | ||
| Add To List Remove From List | Russian Hawthorn | Crataegus ambigua | Deciduous tree | ||
| Add To List Remove From List | Russian Peashrub | Caragana frutex | Deciduous shrub | ||
| Add To List Remove From List | Russian Sage | Perovskia atriplicifolia | Hardy perennial | ||
| Add To List Remove From List | Sagae Hosta | Hosta | 'Sagae' | Hardy perennial | |
| Add To List Remove From List | Sakhalin Honeysuckle | Lonicera sachalinensis maximowiczii | Deciduous shrub | ||
| Add To List Remove From List | Salsa Mariachi sneezeweed | Helenium | 'Salsa Mariachi' | Hardy perennial | |
| Add To List Remove From List | Salud Embers sneezeweed | Helenium autumnale | 'Balsaluemb' | Hardy perennial | |
| Add To List Remove From List | Salvia | Salvia farinacea | Annual | ||
| Add To List Remove From List | Samba Weigela | Weigela florida | 'Samba' | Deciduous shrub | |
| Add To List Remove From List | Samurai Hosta | Hosta | 'Samurai' | Hardy perennial | |
| Add To List Remove From List | Sand Cherry | Prunus pumila | Deciduous tree | ||
| Add To List Remove From List | Santa Cruz Majoram | Origanum | 'Santa Cruz' | Hardy perennial | |
| Add To List Remove From List | Sapalta Cherry Plum | Prunus besseyi x P. Salicina | 'Sapalta' | Deciduous tree | |
| Add To List Remove From List | Sapphire Aster | Symphyotrichum dumosum var. strictior | 'Sapphire' | Hardy perennial | |
| Add To List Remove From List | Sapphire Blue Oat Grass | Helictotrichon sempervirens | 'Saphirsprundel' | Hardy perennial | |
| Add To List Remove From List | Sarah Bernhardt Peony | Paeonia | 'Sarah Bernhardt' | Hardy perennial | |
| Add To List Remove From List | Sarah Sands Lilac | Syringa vulgaris | 'Sarah Sands' | Deciduous shrub | |
| Add To List Remove From List | Sarastro Bellflower | Campanula | 'Sarastro' | Hardy perennial | |
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