| Name | Bloom Season | Sun Exposure | Soil Requirements | Height (inches) | Hardiness Zone | Flower Color | Propagation |
| Ageratum, Hardy Eupatorium coelestinum | Late summer to frost | Sun to partial shade | Moist; tolerates poor drainage | 12 to 36 | 6 to 10 | Blue, violet, white | Division in spring |
| Alumroot, 'Palace Purple' Heuchera 'Palace Purple' | Foliage: spring to fall | Sun to partial shade | Well drained | 12 to 24 | 4 to 8 | Purple (foliage) | Division; seeds |
| Anemone, Japanese Anemone x hybrida | Late summer to fall | Partial shade | Well drained | 24 to 48 | 4 to 8 | Pink, white | Division in spring; root cuttings in winter |
| Artemisia Artemisia absinthium | Late summer | Sun | Dry | 24 to 36 | 3 to 9 | Yellow | Seeds; division |
| Aster Aster spp. | Late summer, fall | Sun | Well drained | 12 to 48 | 5 to 8 | Blue, pink, violet, white | Spring or fall division; cuttings |
| Astilbe Astilbe x arendsii | Early to mid summer | Sun to partial shade | Moist; fertile | 24 to 48 | 4 to 9 | Pink, red, white | Spring or fall division; seeds |
| Baby's breath Gypsophila paniculata | Summer | Sun | Well drained; alkaline | 18 to 36 | 3 to 8 | Pink, rose, white | Seeds; grafting |
| Balloon flower Platycodon grandiflorus | Late spring to summer | Sun to partial shade | Well drained, slightly acidic | 12 to 36 | 3 to 8 | Blue, white | Seeds; division in spring |
| Bearded tongue Penstemon spp. | Late spring to summer | Sun | Well drained | 18 to 36 | 5 to 8 | Orange, pink, red, rose, violet, white | Seeds sown late summer; cuttings in summer; division |
| Bear's breeches Acanthus spinosus | Midsummer | Partial shade | Well drained | 36 to 48 | 7 to 10 | Purple and white | Root cuttings in spring |
| Bee-balm Monarda didyma | Summer | Sun to partial shade | Moist | 24 to 48 | 4 to 9 | Pink, red, rose, violet, white | Division in spring; cuttings; seeds |
| Begonia, Hardy Begonia grandis | Summer to fall | Partial shade | Rich; moist | 24 | 6 to 9 | Pink | Bulbils formed in leaf axils; seeds |
| Bellflower Campanula spp. | Summer | Sun | Well drained | 9 to 60 | 3 to 7 | Blue, lavender white | Seeds |
| Bergenia Bergenia cordifolia | Early spring | Partial shade | Rich; moist | 12 to 18 | 3 to 8 | Deep pink | Seeds; division in spring |
| Black-eyed Susan Rudbeckia fulgida var. Sullivantii | Late summer | Sun to partial shade | Well drained | 18 to 30 | 3 to 9 | Gold with black center | Division in spring or fall; seeds |
| Blanket flower Gaillardia x grandiflora | Summer, long flowering | Sun | Dry; sandy; well drained | 12 to 36 | 2 to 10 | Red and yellow | Seeds, division in spring |
| Bleeding heart Dicentra spectabilis | Spring | Partial shade | Rich; moist; well drained | 14 to 24 | 2 to 9 | Rose pink, white | Seeds sown late summer; division in fall or spring |
| Bleeding heart, Fringed Dicentra eximia | Early summer | Partial shade to shade | Rich; moist; well drained | 12 to 18 | 3 to 9 | Deep pink | Seed sown late summer; division in spring |
| Blue wild indigo Baptisia australis | Spring | Sun to partial shade | Well drained | 36 to 48 | 3 to 9 | Blue | Seeds sown when fresh in mid-summer |
| Butterfly weed Asclepias tuberosa | Spring, summer | Sun | Dry; well drained | 24 to 36 | 4 to 9 | Orange, red, yellow | Seeds |
| Candytuft Iberis sempervirens | Spring | Sun | Well drained; alkaline | 9 to 18 | 3 to 9 | White | Cuttings in midsummer; seeds |
| Cardinal flower Lobelia cardinalis | Late summer | Partial shade | Moist; high in organic matter | 36 to 48 | 3 to 9 | Cardinal red | Remove offshoots in late summer; seeds; cuttings |
| Chrysanthemum Deudranthuna x grandiflora | Fall | Sun | Well drained | 12 to 36 | 5 to 9 | Lavender, orange, red yellow, white | Division in spring |
| Columbine Aquilegia canadensis | Spring | Partial shade | Moist; well drained | 12 to 24 | 3 to 8 | Red and yellow | Seeds |
| Coneflower, Purple Echinacea purpurea | Summer | Sun to partial shade | Well drained; drought tolerant | 24 to 36 | 3 to 8 | Rose pink or white with gold centers | Division in spring; root cuttings |
| Coral bells Heuchera sanguinea | Late spring | Partial shade | Well drained; high organic matter | 12 to 18 | 3 to 8 | Deep pink, red | Division |
| Coreopsis, Lanceleaf Coreopsis lanceolata | Late spring | Sun to partial shade | Well drained to dry | 12 to 24 | 3 to 8 | Gold, yellow | Seeds; division in spring or fall |
| Coreopsis, Threadleaf Coreopsis verticillata | Summer | Sun to partial shade | Well drained; dry | 9 to 18 | 3 to 9 | Yellow, gold | Division in spring or fall; seeds |
| Daisy, English Bellis perennis | Spring | Sun to partial shade | Cool; moist; fertile | 3 to 6 | 4 to 10 | Pink, red, white | Seeds; division in spring |
| Daisy, Shasta Leucanthemun x superbum | Spring, summer | Sun | Well drained | 12 to 36 | 4 to 9 | White, yellow centers | Division in fall |
| Evening primrose Oenothera speciosa | Summer | Sun | Well drained; infertile | 12 to 24 | 5 to 8 | Pink, white | Seeds; division |
| Flax, Perennial Linum perenne | Spring, summer | Sun to partial shade | Well drained | 12 to 18 | 4 to 9 | Blue, white | Seed; cuttings in summer |
| Foamflower Tiarella cordifolia | Spring | Partial shade to shade | Moist; cool | 6 to 12 | 3 to 8 | White | Division in spring; seeds sown spring |
| Foxglove Digitalis purpurea | Late spring | Partial shade | Moist; well drained | 24 to 60 | 4 to 9 | Purple, white | Seeds sown in late summer |
| Foxtail lily Eremurus spp. | Summer | Sun | Rich, well drained | 24 to 60 | 5 to 8 | Bronze, pink, white, yellow | Division in fall every 3 to 4 years |
| Gas plant Dictamnus albus | Early summer | Sun | Well drained | 36 to 48 | 3 to 8 | White | Seeds |
| Gaura, White Gaura lindheimeri | Summer to fall | Sun to partial shade | Rich; well drained | 24 to 48 | 5 to 9 | White fading to light pink | Seeds; division seldom necessary |
| Geranium, Cranesbill Geranium sanguineum | Spring, summer | Sun to partial shade | Moist; drought tolerant | 9 to 12 | 3 to 8 | Magenta | Division in spring or fall; cuttings; seeds |
| Gerbera daisy Gerbera jamesonii | Early summer to frost | Sun | Well drained | 12 to 18 | 8 | Peach, pink, red, yellow | Seeds; division in spring |
| Geum Geum spp. | Late spring to early summer | Partial shade | Well drained | 9 to 18 | 5 to 7 | Orange, scarlet, yellow | Annual division in late summer; seeds |
| Globe thistle Echinops ritro | Summer | Sun to partial shade | Well drained | 24 to 48 | 3 to 8 | Deep blue | Division or root cuttings in spring |
| Goat's beard Aruncus dioicus | Late spring | Partial shade | Moist; rich | 48 to 60 | 3 to 7 | Creamy white | Seeds; division in spring |
| Goldenrod Solidago spp., S. hybrids | Late summer to fall | Sun | Well drained; high organic matter | 18 to 72 | 2 to 8 | Gold, yellow | Division in spring; cuttings of cultivars |
| Green and gold Chrysogonum virginianum | Spring, sporadically in summer | Partial shade to shade | Moist; well drained | 6 to 9 | 5 to 9 | Gold | Division in spring |
| Heliopsis Heliopsis helianthoides | Summer | Sun | Well drained | 48 to 60 | 3 to 9 | Orange, yellow | Division; seeds |
| Hibiscus, Red Hibiscus coccineus | Mid to late summer | Sun | Moist; tolerates poor drainage | 6 to 8 | 5 to 9 | Deep red | Division; seeds |
| Hollyhocks Alcea rosea | Spring to fall | Sun | Well drained | 24 to 60 | 5 to 9 | Apricot,pink, purple, white yellow | Seeds sown during winter |
| Hosta Hosta spp. | Summer | Partial shade | Rich; well drained; high in organic matter | 18 to 24 | 3 to 8 | Lilac, white | Division early in spring as leaves emerge |
| Hyacinth bletilla Bletilla striata | Spring | Partial shade | Moist; rich | 8 to 12 | 5 to 9 | Deep rose, white | Division in fall |
| Ice plant Delosperma cooperi | Summer | Sun | Dry; sandy or rocky | 3 to 6 | 6 to 9 | Purplish pink | Seeds |
| Iris Iris cristata | Spring | Partial shade | Well drained | 6 | 3 to 9 | Lilac | Division in fall; seeds |
| Iris, Japanese roof Iris tectorum | Summer | Sun to partial shade | Acidic; moist; high in organic matter | 12 to 18 | 4 to 9 | Lilac | Division in spring or fall |
| Jacob's ladder Polemonium reptans | Late spring to early summer | Sun to partial shade | Well drained | 18 to 36 | 3 to 7 | Blue, white | Seeds; cuttings; division in late summer |
| Lamb's-ears Stachys byzantina | Early summer | Sun | Well drained | 12 to 15 | 4 to 8 | Purplish pink | Division in early spring; seeds |
| Lantana Lantana camara | Summer to fall | Sun | Well drained; tolerates drought | 6 to 12 | 8 to 10 | Orange, pink, yellow | Cuttings |
| Larkspur Delphinium spp. | Spring | Sun | Well drained | 12 to 24 | 5 to 9 | Blue | Seeds |
| Lavender Lavandula angustifolia | Summer | Sun | Well drained; alkaline | 24 to 36 | 5 to 9 | Lavender | Stem cuttings in summer; seeds; division |
| Leadwort Ceratostigma plumbaginoides | Late summer | Sun to partial shade | Well drained | 8 to 12 | 5 to 9 | Blue | Cuttings; spring division; seeds |
| Lenten rose Helleborus orientalis | Early spring | Partial shade to shade | Rich; moist; well drained | 12 to 18 | 4 to 9 | Rose, white | Division in spring; seeds |
| Leopard's bane Doronicum spp. | Spring | Partial shade | Cool; moist soil | 12 to 24 | 4 to 7 | Yellow | Seeds; division in spring |
| Ligularia Ligularia stenocephala | Summer | Partial shade | Moist; high in organic matter | 48 to 60 | 5 to 7 | Yellow | Division |
| Loosestrife, Gooseneck Lysimachia clethroides | Summer | Sun to partial shade | Moist; well drained | 24 to 36 | 3 to 8 | White | Division; seeds |
| Loosestrife, Yellow Lysimachia punctata | Summer | Sun | Moist | 18 to 30 | 4 to 8 | Yellow | Cuttings; seeds |
| Lungwort Pulmonaria saccharata | Spring | Partial shade to shade | Cool; moist, high in organic matter | 9 to 18 | 3 to 8 | Pink turning blue, white | Division in fall; seeds sown early spring |
| Maltese cross Lychnis chalcedonica | Late spring to early summer | Sun to partial shade | Moist; well drained; fertile | 18 to 24 | 6 to 8 | Scarlet | Division spring or fall; seeds |
| Monkshood Aconitum spp. | Mid to late summer | Sun to partial shade | Moist; well drained | 36 to 48 | 3 to 7 | Blue to violet | Division in fall |
| Mullein Verbascum spp. | Late spring | Sun to partial shade | Well drained | 24 to 48 | 6 to 8 | Rose pink, purple, white, yellow | Root cuttings in late winter; seeds |
| Obedient plant Physostegia virginiana | Late summer to early fall | Sun to partial shade | Well drained; moderately fertile | 36 to 48 | 2 to 9 | Pink | Division in spring; seeds |
| Pearly everlasting Anaphilis spp. | Late summer | Sun | Well drained | 12 | 3 to 8 | Grayish white | Seeds; division in fall or spring |
| Phlox, Garden Phlox paniculata | Summer | Sun to partial shade | Moist; well drained | 24 to 36 | 4 to 8 | Blue, magenta, pink, white | Division in fall |
| Phlox, Creeping Phlox subulata | Spring | Sun | Well drained | 6 to 9 | 2 to 9 | Blue, pink, red, rose, violet, white | Division after flowering; cuttings |
| Pincushion flower Scabiosa caucasica | Early summer | Sun to partial shade | Well drained; near neutral in pH | 18 to 24 | 3 to 7 | Blue, deep blue, lavender,white | Seeds sown in spring or summer |
| Pinks Dianthus spp. | Late spring to early summer | Sun | Well drained; alkaline | 6 to 24 | 4 to 9 | Pink, rose, white | Seeds; cuttings; division in spring |
| Poppy, Oriental Papaver orientalis | Spring to early summer | Sun to partial shade | Well drained | 18 to 24 | 2 to 7 | Orange, pink, white, yellow | Seed; root cuttings |
| Primrose Primula x polyantha | Spring | Partial shade | Cool; moist; high organic matter | 6 to 12 | 3 to 8 | Blue, red, violet, yellow | Division in spring; seeds |
| Primrose, Cowslip Primula veris | Spring | Partial shade | Moist; well drained; acidic | 12 | 5 to 8 | Yellow | Division in spring; seeds |
| Pyrethrum Pyrethrum roseum = C. coccineum | Early summer | Sun to partial shade | Well drained | 12 to 24 | 3 to 7 | Pink, red with yellow center, white | Division early spring or fall; seeds |
| Red hot poker Kniphofia uvaria | Summer | Sun | Well drained | 36 to 60 | 5 to 9 | Red, yellow | Division in spring, seeds |
| Red valerian Centranthus ruber | Spring | Sun | Well drained; alkaline | 36 | 5 to 8 | Pink, red,white | Seeds, division in fall or spring |
| Rose campion Lychnis coronaria | Spring | Sun to partial shade | Well drained | 24 to 36 | 4 to 8 | Magenta, red, white | Seeds |
| Rose mallow Hibiscus moscheutos | Summer to frost | Sun to partial shade | Moist; high in organic matter | 18 to 24 | 4 to 9 | Pink, red, white | Seeds; division in spring or fall |
| Sage, Hybrid Salvia x superba | Summer | Sun | Moist; well drained | 24 to 36 | 3 to 10 | Violet blue | Stem cuttings; division |
| Sage, Mealy-cup Salvia farinacea | Summer | Sun | Well drained; moist | 24 to 36 | 8b to 10 | Blue, white | Softwood cuttings in summer; seeds; division not advised |
| Sage, Sky-blue Salvia uliginosa | Summer | Sun | Moist; boggy to well drained | 48 to 60 | 6 to 10 | Sky blue | Division of offshoots, cuttings |
| Sage, Russian Perovskia atriplicifolia | Mid to late summer | Sun | Well drained | 36 to 60 | 3 to 9 | Light blue | Tip cuttings in summer; seed |
| Sage, Velvet Salvia leucantha | Summer, fall | Sun | Well drained | 36 | 7b to 10 | Magenta and white | Softwood cuttings in summer |
| Sea holly Eryngium spp. | Summer | Sun | Dry; sandy | 24 to 36 | 2 to 8 | Blue | Separate plantlets from base of mother plant |
| Sea lavender Limonium latifolium | Summer | Sun | Well drained; slightly acidic | 36 | 3 to 9 | Blue | Seeds in late fall |
| Sea thrift Armeria maritima | Spring, summer | Sun | Sandy; well drained | 6 to 12 | 4 to 8 | Pink | Seeds; clump division |
| Sneezeweed Helenium autumnale | Summer to fall | Sun | Moist; well drained | 24 to 60 | 3 to 8 | Orange, reddish brown, yellow | Division in fall |
| Soapwort Saponaria officinalis | Summer | Sun | Moist; well drained | 12 to 30 | 2 to 8 | Pink, red, white | Division of stolons in spring or fall; seeds; cuttings |
| Solomon's seal Polygonatum biflorum | Late spring | Partial shade to shade | Cool; moist; well drained | 24 to 36 | 3 to 9 | Yellowish green maturing to cream | Division of rhizome in spring, seeds |
| Spiderwort Tradescantia x andersoniana | Late spring to summer | Sun to partial shade | Moist to boggy | 18 to 24 | 3 to 9 | Pink, purple, violet, white | Division in spring or fall every 3 to 4 years; seeds sown spring |
| Spurge Euphorbia spp. | Spring | Partial shade | Moist to dry | 12 to 18 | 4 to 8 | Yellow bracts (true flowers not showy) | Division; cuttings in summer |
| Statice Limonium spp. | Summer | Sun | Well drained; slightly acidic | 12 to 18 | 4 to 9 | Pink, red, white, yellow | Seeds |
| Stokes' aster Stokesia laevis | Early summer | Sun to partial shade | Well drained | 12 to 24 | 5 to 9 | Lavender blue | Division in spring; cuttings in spring; seeds |
| Stonecrop Sedum spp. | Summer | Sun to partial shade | Well drained to moist | 3 to 12 | 3 to 8 | Yellow | Tip cuttings taken in spring and summer |
| Sundrops Oenothera fruticosa | Summer | Sun | Well drained to dry | 6 to 12 | 4 to 8 | Yellow | Division in summer; seeds |
| Sunflower Helianthus spp. | Late summer and fall | Sun to partial shade | Moist; some species tolerate poor drainage | 60 to 84 | 6 to 9 | Yellow | Division; cuttings; seeds |
| Turk's turban Malvaviscus arboreus | Summer to fall | Sun to partial shade | Well drained | 36 to 48 | 8 to 10 | Red | Cuttings; division; seeds |
| Verbena, Brazilian Verbena bonariensis | Summer to frost | Sun | Well drained | 36 to 48 | 7 to 9 | Violet | Root cuttings in spring; seeds |
| Verbena, Clump Verbena canadensis | Late spring to fall | Sun | Well drained | 8 to 18 | 6 to 10 | Pink, purple, red, white | Root cuttings in spring; seeds |
| Verbena, Rigid Verbena rigida | Summer | Sun | Well drained | 12 to 24 | 8 to 10 | Violet | Root cuttings in spring; seeds |
| Veronica Veronica spp. | Late spring to early summer | Sun to partial shade | Well drained | 12 to 24 | 4 to 8 | Bluish, pink, violet, white | Division fall or spring; cuttings in summer; seeds |
| Violet Viola spp. | Spring | Sun to partial shade | Moist; well drained | 4 to 8 | 4 to 9 | Blue, violet, white | Offsets; division; seed |
| Yarrow Achillea spp. | Late spring to summer | Sun to partial shade | Well drained | 24 to 36 | 3 to 9 | Cerise red, gold, pink, white | Seeds; division in spring or fall |