no. 7.405

Herbaceous Perennials

by M. Meehan, J.E. Klett and R.A. Cox 1 (12/08)

Quick Facts...

  • These herbaceous perennials are best adapted for Colorado's lower elevations.
  • Herbaceous perennials differ in bloom period, flower color, height, foliage texture and environmental requirements.
  • Environmental requirements include sun and wind exposure or lack of it, soil conditions and water needs.
  • Matching the perennial plant to the site conditions produces a successful perennial garden.

An ever-expanding palette of herbaceous perennials lets home gardeners create showy collections.

Under normal growing conditions, perennials live many years, dying back to the ground each winter. They quickly establish themselves in a few growing seasons and create a backbone for the flower garden.

Plants vary in flower color, bloom time, height, foliage texture and environmental requirements. Environmental requirements include sun exposure, soil conditions and water needs. The key to a successful perennial garden is to choose plants whose requirements match your site's conditions.

Table 1 lists perennials adapted to the broad range of growing conditions in Colorado's lower elevations. Many also do well at higher elevations, but for a more specific listing of higher elevation perennials, see fact sheet 7.406, Flowers for Mountain Communities. More information on design and maintenance of perennial Gardens can be found in 7.402, Perennial Gardening. Also see 7.840, Vegetable Garden: Soil Management and Fertilization.

Key to Table 1:
a only most common cultivars are listed.
bNot Important. Barely-noticeable flowers that are unimportant. The plant is grown for its foliage only.
X: Xeric; plants that are adapted to low water conditions.
M: Plants that prefer moist soils.
C: Flowers that are good for cutting.
* Cultivar - a variety of a species that is developed, propagated and maintained under cultivation. Short for "cultivated variety."
** Biennial - a plant that grows foliage the first year, blooms and sets seed the second year, then dies.

Table 1: Herbaceous perennials best adapted to lower elevations.
SUNNY EXPOSURE
Botanical and
Common Name
Flower
Color
Bloom
Period
Height Cultivarsa Comments/Cultural Hints
Achillea hybrids
Yarrow
White-Red-
Pastels-Yellow
June-Sept. 1.5-2.5' Moonshine, Paprika, Summer Pastels Spreads quickly; good for drying. X, C
Achillea filipendula
Fernleaf yarrow
Yellow June-Oct. 2.5-4.5' Coronation Gold, Gold Plate Fern-like leaf texture; spreads to 3'. X, C
Agastache cana
Hyssop, double bubblemint
Pink July-Sept. 1-3’ Sonoran Sunset® Fragrant foliage; blossoms smell like bubble gum; Plant Select®. X
Agastache rupestris
Sunset® hyssop
Orange-Red-Pink July-Sept. 2-3’ Sunset® Blossoms smell like root beer; favored by hummingbirds; Plant Select®. X
Alcea rosea
Hollyhock
Red-Pink-White June-Aug. 3-6' Chater's Series, Majorette, Powder Puff, Watchman Biennial or perennial; use as background plant; prone to rust disease.C
Armeria maritima
Sea pink
Red-Pink-White April-June 6-8” Alba, Splendens,Victor Reiter Dense rounded mat foliage, adapts to dry soil; salt tolerant.
Artemisia ‘Powis Castle’
Powis Castle sage
NIb NIb 2-3' Powis Castle Gray foliage; mounding habit. X
Artemisia ludoviciana
Sagewort, prairie sage
NIb NIb. 1.5-3.5’ Valerie Finnis Upright growth habit; large silver leaves. X
Artemisia schmidtiana
Silver mound sage
NIb NIb 8-12" Silver Mound Soft, feathery, silver gray foliage; used for specimen or contrast. X
Asclepias tuberosa
Butterfly weed
Orange June-Aug. 2'   Best in well-drained soil. X, C
Aster novae-angliae
New England aster
White-Pink-
Purple
Sept.-Oct. 3-4' Alma Potschke, Purple Dome Prefers well-drained soil; may require staking. C
Aster novi-belgii
Dwarf Fall aster
White-Pink-
Purple
Aug.-Sept 2-3' Alert, Prof. Kippenburg, Snow Flurry Prefers well-drained soil; may require staking. C
Aurinia saxatilis
(Alyssum saxatile) Basket-of-Gold
Yellow April-May 9-12" Compacta, Sulfureum Gray-green mounding foliage; sheer after bloom.
Baptisia australis
False indigo
Blue May-June 2-4.5'   Background plant; interesting seed pods. X, C
Berlandiera lyrata
Chocolate flower
Yellow June-July 10-20"   Flowers give off the scent of chocolate in the early morning; very xeric. X
Callirhoe involucrata
Poppy mallow, winecups
Reddish Purple June-Aug. 6"   Trailing stems spread to 3'; blooms are cup-shaped. Plant Select®, X
Catananche caeruleal
Cupid’s dart
Blue-Purple June-Aug. 1-1.5’ Dark-eyed blooms; tall clumps of slender leaves. X,C
Centaurea dealbata
Persian cornflower
Pink May-June 1-2’ Rosea Spiky flowers; deer resistant. X, C
Centaurea montana
Perennial bachelor’s button
Blue-Purple May-June 1-2’   Perennial version of the bachelor’s button cornflower) wildflower. X, C
Centranthus ruber
Jupiter's beard, red valerian
Red-Pink-White May-Sept. 1-3' Albus Prefers well-drained soil; gray-green foliage.X, C
Coreopsis auriculata
Dwarf coreopsis
Yellow-Orange June-Sept. 4-8" Nana Dense, spreading mound of foliage. X
Coreopsis grandiflora
Coreopsis
Yellow June-Sept. 1-2.5' Baby Sun, Early Sunrise, Sunray Extend bloom by removing spent flowers. X, C
Coreopsis lanceolata
Lance-leaf coreopsis
Yellow June-Aug. 1.5-2’   Slender shiny green leaves. X, C
Coreopsis rosea
Pink coreopsis
Pink Aug-Sept. 1-2’   A clump of thread-leaf foliage.
Coreopsis verticillata
Threadleaf coreopsis
Yellow July-Sept. 1.5-2.5’ Moonbeam, Zagreb Fine-textured foliage. X, C
Dalea purpurea
Purple prairie clover
Purple June-Aug. 2-3’   Long, thin stems with cylindrical flower heads; thread-like leaves. X
Delphinium hybrids
Larkspur, Delphinium
White-Blue-
Pink-Purple
June-Aug. 2-4' Conn. Yankee, Dwarf & Giant Pacific hybrids Seeds and plant poisonous; may need staking. C
Dendranthema x morifolium
Hardy chrysanthemum, Pink Daisy
Pink
June-Aug. 2-3’ Clara Curtis Pink, daisy-like flowers bloom for long periods. C
Dianthus plumarius
Cottage pink
Pink-White May-July 1-1.5' Numerous Dense rounded habit; fragrant blooms.
Dianthus gratianopolitanus
Cheddar pinks
Pink-White May-June 4-8" Firewitch, Spotty, Tiny Rubies Spreading, grass-like clumps; gray-green, fragrant foliage.
Echinacea purpurea
Purple coneflower
Purple,Pink, White July-Sept. 2-3" Alba,Magnus,White,Swan Stiff habit;good in naturalized areas. X, C
Echinops ritro
Globe thistle
Blue July-Sept. 3-4' Taplow Blue Prefers well drained soil; globe flowers can bloom 6-8 weeks. X, C
Erigeron hybrids
Fleabane
Pink-Purple June-July 1-3' Azure Fairy, Pink Jewel Needs well-drained soil; extend bloom by removing spent flowers. C
Eriogonum umbellatum
Sulfur flower
Yellow May-July 0.5-1" Kannah Creek Dark green foliage below sulfur yellow button-like blooms; Plant Select®. X
Eryngium planum
Sea holly
Blue June-August 1-2' Blaukappe Silver-blue flower heads are good for drying. X,C
Eschscholzia californica
California poppy
Yellow-Orange June-Sept. 1-2' Reseeding annual/tender perennial. X, C
Euphorbia polychroma
Cushion spurge
Chartreuse-Yellow April-May 1.5-2'   Neat green mounds; red fall color; sap may be a skin irritant; less invasive.
Gaillardia x grandiflora
Blanket flower
Yellow-Red-
Orange
June-Sept. .5-2.5' Baby Cole, Burgundy, Goblin Showy, daisy-like blooms. X, C
Gazania krebsiana
Hardy orange gazania
Orange
May-Sept. 3-8" Tanager® Rosette of lobed leaves; short-lived perennial or reseeding annual; Plant Select®. X
Gazania linearis
Hardy gazania
Yellow
May-Sept. 2-8' Colorado Gold® A mop of linear leaves; blooms open in sun; Plant Select®. X
Gypsophila paniculata
Baby's breath
White-Pink June-Sept. 2-3' Bristol Fairy, Perfecta, Pink Fairy Airy plant; delicate blooms; good for drying. X. C
Helenium autumnale
Sneezeweed
Yellow-Red Aug.-Sept. 2-4' Buterpat, Moerheim Beauty Brightly colored, daisy-like blooms. M, C
Helianthemum nummularium
Sun rose
Orange-Pink-Yellow-Red-White June-July 0.5-1" Apricot, Wisely Pink, Wisely Primrose Low growing; spreading mounds of foliage; rock garden plant. X
Helianthus maximiliani
Maximilian sunflower
Yellow July-Aug. 6-10' Strong, branched stems, lance-shaped foliage, may flop over if overhead irrigated. X, C
Heliopsis helianthoides
False sunflower
Yellow July-Sept. 3-4' Summer Sun Use as specimen planting or at back of Garden. C
Iberis sempervirens
Candytuft
White April-June 1-1.5' Alexander's White, Autumn Snow Glossy green foliage; shear after bloom; may repeat bloom in fall.
Iris hybrids
Bearded iris
Blue-White-Red-
Purple-Yellow
May-June 1-2.5' Numerous Prefers well drained soil; sword-like foliage. X, C
Knautia macedonica
Knautia macedonica
Red
May-Sept. 1.5-3' Burgundy pincushion-like flowers; open growing habit. X, C
Kniphofia uvaria
Torch lily, red hot poker
Red-Orange-Yellow June-Aug. 2-3' Primrose Beauty, Springtime Spikes of flowers arise from clumps of grasslike foliage. X, C
Lathyrus latifolius Perennial sweet pea White-Pink-Red-Purple
June-Sept. 4-12' Vigorously climbing vines with mixed colored blooms.X
Lavandula angustifolia
Lavender
Blue July-Oct. 1-1.5' Hidcote, Munstead Aromatic blooms; semievergreen foliage.X,C
Liatris spicata
Gayfeather, blazing star
White-Pink-
Purple
July-Sept. 2-3' Floristan Violet, Kobold Clumps of grassy foliage; dense bottle brush blooms. C
Limonium latifolium
Sea lavender
Purple June-Sept. 1.5-3'   Blooms create an airy texture. X, C
Linum perenne
Blue flax
Blue-White May-June 2' Sapphire Light, airy plant; good wildflower; reseeds readily. X
Lychnis coronaria
Rose campion
Purple-Red-Pink June-Aug. 1.5-3' Blood Red Silver gray foliage. X
Malva alcea
Rose mallow
Pink June-Sept. 3-4' Fastigiata Hollyhock-like blooms; lobed foliage. X, C
Mirabilis multiflora
Desert four o’clock
Purple-Red-Pink July-Sept. 1-2' Trumpet-shaped flowers; southern Colorado native; blue-green foliage. X, C
Monarda didyma
Bee balm
Red-Pink-
Violet-White
July-Aug. 2-3' Cambridge Scarlet, Marshall’s Delight Spreads quickly; susceptible to powdery mildew. C
Nepeta species
Catmint
Blue-Purple May-Oct. 1-2' Blue Wonder, Six Hills, Giant, Walker's Low Spreading habit; trim back after bloom; aromatic leaves.
Oenothera speciosa
Mexican Evening Primose
Rose June-Sept. 0.5-1' Siskiyou Spreading habit; 2" blooms, subject to powdery mildew.
Oenothera macrocarpa
Ozark sundrop
Yellow June-Sept. 1-1.5'   Sprawling habit; 3-4” blooms. X
Origanum laevigatum
Ornamental oregano
Pink-Purple-Red June-July 1-2' Herren-hausen Foliage is very aromatic. X
Paeonia hybrids
Paeonia hybrids
White-Pink-Red-Purple
May-June 2-3' Numerous Showy, spring blooms; attractive foliage.M.C.
Papaver alpinum
Alpine poppy
White-Orange
May-June 0.5-1' Lacy, blue-green foliage; allow to reseed. X, C
Papaver nudicaule
Iceland poppy
Pastels
May-July 1' Champagne Bubbles Short-lived perennial; fragrant. X, C
Papaver orientale
Oriental poppy
Orange-Red-Pink-White
May-June 2-3' Allegro, Brilliant, Prince of Orange Large papery blooms; foliage goes dormant after bloom; spreading. X, C
Penstemon species
Penstemon, beard tongue
Blue-Pink-
Red-Violet-
White-Purple-Yellow
May-July 1-3' Elfin Pink, Prairie Huskers Red, Prairie Dusk, Prairie Jewel, Rondo Prefers well-drained soil; stalks of tubular blooms. X
Perovskia atriplicifolia
Russian sage
Lavender
July-Sept. 4' Silver gray, aromatic foliage; cut back in spring above soil line. X
Phlomis cashmeriana Kashmir sage, Jerusalem sage Pink June-July 2-3'   Upright growth habit with blooms surrounding the stem at each set of leaves; unique plant; Plant Select®.
Phlox paniculata
Garden phlox
White-Pink-Orange-
Red-Purple-Blue
July-Sept. 1.5-3' David, Orange Perfection, Starfire Tall stalks with bloom clusters; susceptible to powdery mildew. C
Ratibida columnifera
Prairie coneflower
Yellow-Red July-Oct. 1.5-2’ var. pulcherrima (Red) Native wildflower; flower has a cone-shaped center; sometimes called Mexican Hat. X, C
Rudbeckia fulgida
Black-eyed Susan, coneflower
Yellow July-Sept. 1.5' Goldsturm 3"daisy-like blooms with brown-black centers. X, C
Salvia argenta
Silver sage
White June-Aug. 2-3' Large, silvery leaves; Plant Select®. X
Salvia nemorosa
Salvia
Pink-White-Blue-Purple May-Aug. 1.5-2.5' Blue Queen, May Night, Rose Queen Spike-like blooms that repeat if spent blooms removed. X, C
Santolina chamaecyparissus
Lavender cotton
Yellow July-Aug. 1-1.5' Finely cut silver gray foliage; pungent.X
Santolina rosmarinifolia
Green lavender cotton
Yellow July-Aug. 1-2' Bright green foliage; pungent. X
Scabiosa caucasica
Pincushion flower
White-Blue-
Pink
June-Oct. 1.5-2' Perfecta Alba, Blue Perfection Blooms on wiry stems; prefers cool summers. C
Sidalcea hybrids
Miniature hollyhock
Yellow-
Pink
June-July 2-4' Party Girl Looks like a hollyhock but shorter. C
Solidago hybrids
Goldenrod
Yellow July-Sept. 1.5-2' Golden Baby Prefers well-drained soil; mistakenly blamed for hay fever. X, C
Stokesia laevis
Stokes’ aster
Blue-White July-Aug. 1-2' Blue Danube Large, frilly flowers. X.C
Tanacetum densum amanii
Partridge feather
Yellow June-July 6-8" Silvery-white foliage. X
Tanacetum niveum
Snow Daisy
White May-July 1.5-2.5' Silvery-white foliage. X
Tanacetum x coccineum
Painted Daisy
Red-Pink June-July 1-3' Robinson's hybrids Fern-like leaves; daisy flowers. X,C
Zauschneria californica latifolia
Hummingbird flower
Red Aug.-Oct. 1-3' Gray-green leaves; good for attracting hummingbirds.
Zinnia grandiflora
Paper flower, desert zinnia
Yellow June-Oct. 4-8" Papery flowers that dry well. X, C
SUN TO PART SHADE
Botanical and
Common Name
Flower
Color
Bloom
Period
Height Cultivarsa Comments/Cultural Hints
Alchemilla mollis
Lady's mantle
Chartreuse May-June 1-1.5'   Prefers cool summers; fertile soil. M
Aquilegia caerulea Rocky Mountain columbine Blue-White May-June 1.5-2.5'   Prefers well-drained soil; Colorado state flower. C
Aquilegia hybrids
Columbine hybrids
Blue-Red-
Yellow-White
May-June 1-3' McKana Hybrids, Songbirds Prefers well-drained soil; extend bloom by removing spent flowers. C
Artemisia versicolor
‘Sea Foam’ artemisia
NIb NIb
0.5-1’ Sea Form Low, spreading mound of silvery foliage; ideal for rock gardens; Plant Select®. X
Aruncus dioicus
Goatsbeard
White June-July 3-5' Kneiffii Large rounded shrub-like perennial; dense spikes of blooms. M
Astilbe x arendsii
Astilbe, false spirea
Red-Pink-
White-Lavender
June-July 2-3' Amethyst, Fanal Arching plumes of flowers; prefers cool summers, fertile soil. M, C
Bergenia cordifolia
Heart-leafed bergenia
Pink April-May 1-1.5'   Deep glossy green leaves with burgundy fall color.
Campanula carpatica
Carpathian harebell
Blue-White June-July 6-12" Blue Clips, White Clips Compact mounded habit; small, bell-shaped blooms.
Campanula glomerata
Clustered bellflower
Purple-White May-August 1-3' Superba Clusters of large purple bells.
Campanula persicifolia
Peach-leaf bellflower
Blue-White June-August 1-3' Alba Blue Large bell flowers; peach-like leaves.
Campanula rotundifolia
Bluebells, harebells
Blue-White May-Sept.
0.5-2' Olympica, White Gem Colorado native. X
Dianthus hybrid
Dianthus, pinks
Pink-Red-White April-Oct. 4-20" First Love Short lived perennial; carnation-like foliage. C
Dianthus barbatus Sweet William White-Pink-
Purple-Red
May-July 1' Double-Midget Mix Biennial; flat-top cluster of blooms. C
Diascia integerrima Twinspur Pink-
June-Sept. 1-1.5'' Coral Canyon Heat tolerant; performs well in poor soils; Plant Select®. X
Digitalis purpurea
Foxglove
Purple-Pink-
White-Yellow
June-July 3-4' Excelsior Hybrids, Foxy Biennial; reseeds readily; parts of plant are poisonous. M, C
Digitalis obscura
Digitalis obscura
Orange-Red June-July 1-2.5' Sunset® Narrow, willow-like foliage; heat tolerant;Plant Select®. C
Gaura lindheimeri
Whirling butterflies
White-Pink
June-Sept. 1.5-4’ Crimson Butterflies, Siskiyou Pink Slender, gracefully arching stems; blooms whirl like butterflies. X, C
Geraniumhybrids
Geranium cranesbill
Blue-Purple
May-June 1-2' Brookside, Johnson’s Blue Mounding clumps of foliage.
Geranium himalayense
Himalayan cranesbill
Purple-Blue
May-June 1-1.5' Birch’s Double,Plenum Divided leaves; double blossoms.
Geranium sanguineum
Bloodred cranesbill
Blue-Purple-
Red-White
May-June 1-1.5' Album, Max Frei Mounding habit; foliage has red fall color. M
Geum hybrids
Geum, Avens
Red-Orange-
Yellow
June-July 1.5-2' Lady Stratheden, Mrs. Bradshaw Prefers rich organic soil; dark green foliage. C
Hemerocallis species
Daylily
Yellow-Red-Pink-Orange-Purple-White
June-Aug. 1.5-3' Stella d'Oro and many others. Grass-like foliage; trumpet-shaped blooms.
Heuchera micrantha
Alumroot
White June-July 1-1.5' Palace Purple Some cultivars have purple foliage with a rounded habit. M, C
Heuchera sanguinea
Coralbells
Red-White-
Pink
June-Aug. 1-1.5' Firefly, Snow Angel Small bell-shaped blooms; extend bloom by removing spent flowers. M, C
Hibiscus moscheutos
Rose mallow
Red-Pink-
White
July-Sept. 2-4.5' Disco Belle, Southern Belle Prefers moist soil; 6-10" blooms. M
Iris sibirica
Siberian iris
Purple-Blue-
White
June 2-3' Butter & Sugar, Caesar’s Brother, Snow Queen Clumps of slender leaves. M, C
Leontopodium alpinum
Edelweiss
White
June-July 0.5-1’ Woolly gray foliage and flowers. X
Leucanthemum x superbum
Shasta daisy
White July-Aug 1-3' Alaska, Silver Princess Extend bloom by removing spent flowers. M, C
Lilium species
Lily
Pink-White-
Yellow-Red
June-July 1-4' Stargazer, many others Bulbs with trumpet-like, fragrant flowers. C
Lupinus hybrids
Lupine
Yellow-Red-Blue-
Purple-White
May-June 2.5' Gallery or Russell Prefers cool summers; large pea-like blooms. M, C
Lychnis chalcedonica
Maltese cross
Scarlet-Pink-
White
June-July 2-3' Small groupings add bold color to the Garden M, C
Origanum libanoticum
Hopflower oregano
Purple
June-Sept. 1-1.5' Drooping, hop-like bracts remain after bloom; Plant Select®
Osteospermum barberiae v. compactum
Purple Mountain® sun daisy
Purple
April-Sept. 8-10" Purple Mountain® Tidy foliage with blooms above on stems; blooms open only in sun; Plant Select®. X
Osteospermum
Lavender Mist® sun daisy
White-Purple
April-Sept. 10-12" Tidy foliage with blooms above on stems; blooms open only in sun; Plant Select®. X
Phlox subulataCreeping Phlox
White-Pink-
Red-Blue
April-May 4-6" Candy Stripe, Emerald Blue, White Delight Carpet-like mat; needle-like foliage. X
Physostegia virginiana,
Obedient plant
Pink-White-
Lavender
Sept.-Nov. 2-4' Pink Bouquet, Summer Snow Dark green foilage; spikes of tubular blooms; spreading. M, C
Platycodon grandiflorus
Balloon flower
White-Pink-
Blue
July-Sept 1.5-3' Fuji Pink, Mariesii Prefers well-drained soil; balloon-shaped buds. X, C
Pulmonaria saccharata
Bethlehem sage
Blue-Pink-
White
April-May 1-1.5' Roy Davidson, Smoky Blue Leaves with white spots; clump-forming. M
Pulsatilla vulgaris European pasqueflower Purple-Red-White April-May 0.5-1' Red, Papageno Fringed, fern-like foliage; Fuzzy seed heads endure. X
Saxifraga oppositifolia
Purple robe saxifrage
Purple
June-Sept. 6-8" Purple Robe Foliage is in a tight rosette.X
Scabiosa columbaria Pincushion flower Blue-Pink-
May-Oct. 0.5-2’ Butterfly Blue, Pink Mist Similar to S. caucasica but shorter and more shade tolerant. X, C
Sedum spectabile
Showy stonecrop
Pink-Red-White
Aug.-Sept. 1.5-2’ Autumn Joy, Brilliant, Indian Chief Succulent foliage. X, C
Thalictrum aquilegifolium
Columbine
meadow rue
Lavender May-June 2-3'   Delicate blooms; columbine-like foliage. M, C
Thermopsis rhombifolia
Golden banner
Yellow May-June 2-3'   Spreading; dark green foliage. C
Tradescantia x andersoniana Spiderwort White-Blue-
Purple-Pink
May-July 1.5-2' Concord Grape, Red Cloud, Red Grape Strap-like leaves; cut back in mid summer. M
Trollius chinensis Globe flower Yellow
July-Aug. 2-2.5’ Golden Queen Dark green foliage with deeply cut lobes. M
Veronica spicata
Spike speedwell
Blue-Pink-
White
June-Sept. 1-2' Blue Charm, Icicle, Red Fox, Sliver Upright habit; Sunny Border Blue is a commonly sold hybrid. M, C
Viola corsica
Corsican violet
Purple-Blue
April-Oct. 6-8" Low-growing foliage with large flowers above;Plant Select®. C
Zauschneria garrettii
California fuchsia
Orange
Aug.-Sept. 4-12" Orange Carpet® Good for cascading over walls; tubular flowers; Plant Select®. X
PART SHADE TO SHADE
Botanical and
Common Name
Flower
Color
Bloom
Period
Height Cultivarsa Comments/Cultural Hints
Aconitum napellus
Monkshood
Blue-Violet June-Sept. 1.5-3'   Lacy foliage; helmet-shaped flowers; poisonous. M, C
Anemone x hybrida
Japanese anemone
Pink-White Aug.-Oct. 2-3' Prince Heinrich, Whirlwind Mounding foliage; flowers produced on tall stems. M
Brunnera macrophylla
Siberian bugloss
Blue May-June 1-1.5'   Blooms like forget-me-nots; heart-shaped leaves form rounded mound. M
Cimicifuga racemosa
Black snakeroot
White Aug-Oct. 3-5’ Atropurpurea Spires of flowers with clumps of green foliage. M
Cimicifuga simplex
White snakeroot
White June-Aug 2-4’ White Pearl Spires of flowers with clumps of green foliage. M
Dicentra formosa
Fringed bleeding heart
Pink-White April-May 1-1.5' Luxuriant With adequate water will bloom later into the summer. C
Dicentra spectabilis
Bleeding heart
Red-White April-June 2-3' Alba Fern-like leaves; heart-shaped blooms. C
Filipendula rubra
Meadowsweet
Pink-Red June-Aug. 4-6' Venusta Plumed foliage; fragrant. M
Helleborus orientalis
Lenten Rose
Pink-White-Red March-April 1-1.5’ Royal Heritage Nodding blooms above palmate leaves. M, C
Hosta species
Hosta
Purple-White July-Aug. 1-3’ Blue Angel, Elegans, Patriot Long, wide leaves; some with variegated foliage.
Ligularia dentata
Ragwort
Dark Orange July-Sept. 3-4' Othello Mounded habit; daisy-like blooms. M
Ligularia stenocephala
Ragwort
Yellow June-Aug. 3-5' The Rocket Rocket-like blooms reach 4-6'; foliage forms large clump below blooms. M
Lobelia fulgens
Scarlet lobelia
Red June-Aug. 2-3' Queen Victoria Maroonish foliage.
Polemonium caeruleum
Jacob’s ladder
Blue-White-Purple May-July 1.5-3’ Album, Brise D’Anjou Leaflets are arranged like rungs of a ladder; some varieties are variegated.
1 M. Meehan, former Colorado State University graduate student; J.E. Klett, Extension landscape horticulture specialist and professor, horticulture and landscape architecture; and R.A. Cox, Extension horticulture agent, Jefferson County. Revised 12/08.

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Updated Wednesday, January 08, 2014

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