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A botanical name


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Cerastium tomentosum columnae SNOW-IN-SUMMER A relatively fast spreader and makes a good ground cover for small to large areas. Used on sunny banks or between stepping stones. Prefers sandy loam with low moisture and low fertility. Grows admirably in rough conditions. The leaves spread an area with silvery gray, dense mats, and flowers bloom in abundance across the foliage.

Cerastium tomentosum columnae

6 - 8 in.

12 in.

white

mid spring

Su

spreader

Ceratostigma plumbaginoides PLUMBAGO Forms attractive mats with long lasting deep blue flowers. Has bronze to scarlet foliage in the autumn. Ground cover used to edge borders and walks or planted underneath shrubs. Leaves are dark green, smooth and rounded. Adaptable to most soils provided drainage is good.

Ceratostigma plumbaginoides

1 ft.

18 in.

indigo blue

l. summer

Su-pSh

spreader

Chelone TURTLEHEAD Coloring semi-shade gardens in early fall, this plant brings clear pink flowers with hints of deep pink highlights. Attractive dark green and shiny leaves are ovate and coarsely toothed. Loves to perform along side ponds, streams and bog, but can be added to your border where the soil is moist to wet and rich, with good air circulation. Low maintenance given their preferences.

Chelone lyonii 'Hot Lips'

2 - 3 ft.

18 in.

rose pink

l sum. - e.aut.

Su-pSh

clump

Chrysanthemum superbum, C. maximum SHASTA DAISY: See Leucanthemum

Chrysogonum virginianum GOLDENSTAR Sturdy, soft green foliage bears 1 in. single starry flowers. Even longer blooming where summers are cool, admirable peak bloom occurs in spring here in zone 6. Likes average moisture with moderate fertility and good drainage. If planted in full sun, consistent moisture assures performance. If moisture cannot be steady, light to part shade helps in the heat of summer. Useful for edging. Many respected gardeners hold this an indispensable wildflower.

Chrysogonum virginianum

4 - 8 in.

12 in.

yellow

spring - sum.

Su-pSh

carpet

Chrysogonum virginianum 'Pierre'

8 in.

12 - 18 in.

yellow

spring

Su-pSh

spreader

Cimicifuga BUGBANE The ferny leaves are arranged in sprays of threes, in groups that branch in threes. The foliage sends tall, wiry stems with bottlebrush flowers of white or cream. Grows in a moist, rich, acid soil. Cultivars range in height from 3 - 8 ft.. Three pure white bloomers are: C. racemosa, an early summer bloomer, while C. simplex 'White Pearl' and C. ramosa 'Atropurpurea' are both sought after as autumn bloomers. C. simplex 'White Pearl' flowers on arching stalks, whereas C. racemosa stands erect with reddish stems. The towering C. ramosa 'Atropurpurea' is purplish tinted in both foliage and buds, but flowers open white with a gentle, sweet fragrance. The newer cultivars: Cimicifuga ramosa 'Brunette' and 'Hillside Black Beauty', have very dark purplish foliage that is more pronounced in more light. All are fragrant to varying degrees.

Cimicifuga racemosa

6 ft.

2 ft.

white

summer

pSh

clump

Cimicifuga ramosa 'Atropurpurea'

7 ft.

4 ft.

white

autumn

Su-pSh

clump

Cimicifuga ramosa 'Brunette'

7 ft.

4 ft.

white

l.sum-fall

pSh

clump

Cimicifuga ramosa 'Hillside Black Beauty'

7 ft.

4 ft.

white

l.sum-fall

pSh

clump

Cimicifuga simplex 'White Pearl'

4 ft.

2 ft.

white

autumn

Su-pSh

clump

Clematis CLEMATIS Thrive in cool, moist, fertile soil well enriched with leaf mold, peat or compost where it won't be waterlogged. May prefer limy soil but flourish under neutral or slightly acid conditions. Can be grown on trellises, fences and walls or allowed to scramble through loose shrubs and small trees. Keep roots cool and shaded where foliage will thrive in the sun. Can mulch plants or over plant by adding a shallow rooted ground cover.

Clematis 'Blue Ravin'

6 - 10 ft.

2 - 3 ft.

8 in.lilac blue w/ pink mauve

e.to l. summer

Su-pSh

vine

Clematis 'Comtesse de Bouchaud'

8 ft.

2 - 3 ft.

6 - 7 in. / pink

e. summer

Su

vine

Clematis 'Etoille Violette'

12 - 20 ft.

2 - 3 ft.

4 in ./deep purple

l. summer

Su

vine

Clematis 'Gillian Blades'

6 - 8 ft.

2 - 3 ft.

6 - 8 in. /white

late spring

Su

vine

Clematis 'H. F. Young'

6 - 8 ft.

2 - 3 ft.

6 - 8 in./ lt. blue

late spring

Su

vine

Clematis 'Henryi'

10 - 12 ft.

2 - 3 ft.

6 - 8 in. / white

late spring

Su

vine

Clematis 'Jackmanii'

10 ft.

2 - 3 ft.

5 - 6 in. / purple

e. summer

Su

vine

Clematis 'Jackmani Superba'

12 - 15 ft.

2 - 3 ft.

2-3 in.blue purple

summer

Su

vine

Clematis 'Nelly Moser'

6 - 8 ft.

2 - 3 ft.

6 - 8 in. / pink

late spring

Su

vine

Clematis 'Perle d'Azure'

16 ft.

2 - 3 ft.

4 - 6 in./sky blue

e.sum - aut.

Su

vine

Clematis 'Poulala' [Alabast]

8 - 10 ft.

2 - 3 ft.

6 in.cream w/yellow

l. spring - l. summer

Su-pSh

vine

Clematis 'Ramona'

10 - 12 ft.

2 - 3 ft.

6 - 8in. / lav.

summer

Su

vine

Clematis 'Silver Moon'

8 - 10 ft.

2 - 3 ft.

6 - 8 in pale silver lilac

summer

Su-pSh

vine

Clematis 'Will Goodwin'

10 - 12 ft.

2 - 3 ft.

6 - 8 in. / blue

e. summer

Su

vine

Clematis lanuginosa 'Candida'

8 - 15 ft.

2 - 3 ft.

7 - 9 in. / white

e. summer

Su

vine

Clematis maximowicziana (C. pan.)

30 ft.

2 - 3 ft.

1/4-1/2 in. / white

l. summer

Su

vine

Clematis montana 'Rubens'

15 - 20 ft.

2 - 3 ft.

2 - 4 in. / pink

e. summer

Su

vine

Clematis texensis 'Etoile Rose'

10 - 13 ft.

2 - 3 ft.

cherry purp.w/silver

july - august

Su

vine

Convallaria majalis LILY-OF-THE-VALLEY Tolerant of most soil conditions; however, will benefit from periodic additions of organic matter. Fragrant flowers. Good ground cover under shade trees needing room to spread. Will over run other plants if used in a mixed perennial garden. Use instead as an under planting in association with shade loving woody plants and shrubs.

Convallaria majalis

6 - 12 in.

12 in.

white

mid spring

pSh

spreader

Coreopsis TICKSEED Tolerant of various soils with good drainage. Relatively drought tolerant, they are easy to grow. When dead-heading the grandiflora kinds, cut spent flowers and flower stalks to improve appearance. All are long blooming. C. rosea likes steady moisture. C. rosea and C. verticillata have thread-leafed green foliage. C. grandiflora 'Sunray' displays a wider green leaf that is lobed near the top and undivided near its bottom end. The much-in-demand C. verticilata 'Moonbeam', a PPA plant of the year, is simply one of the finest and longest blooming perennials, with pale yellow flowers on wiry herbaceous bushes. Plants can be cut or sheared back by 1/4 to 1/3 or more in midsummer to promote more bloom (massive dead-heading in effect). Coreopsis 'Sweet Dreams' has white flower petals with a raspberry base. Coreopsis 'Limerock Ruby' (not hardy in zone 6) has ruby red flowers. Both are new introductions with 1 1/2 inch flowers, a long bloom season, and represent a significant color break for Coreopsis. Both should be pinched or trimmed back to promote a more compact habit.

Coreopsis 'Creme Brulee'

18 - 24 in.

2 ft.

yellow

summer

Su

clump

Coreopsis 'Early Sunrise'

20 in.

21 in.

golden yellow

e.sum.- ext.

Su

clump

Coreopsis 'Sweet Dreams'

12 in.

18 - 24 in.

white, dp pink

summer

Su

clump

Coreopsis grandiflora 'Flying Saucers'

15 in.

12 - 15 in.

yellow

e. sum. - aut.

Su

clump

Coreopsis grandiflora 'Sunray'

18 - 24 in.

12 - 15 in.

yellow

e. summer

Su

clump

Coreopsis lanceolata 'Walter'

18 in.

12 - 18 in.

yellow w/red

summer

Su

clump

Coreopsis pubescens 'Sunshine Superman'

12 - 18 in.

21 in.

gold/ornge cntr

june - sept.

Su-pSh

spreader

Coreopsis rosea 'American Dream'

12 - 18 in.

1 ft.

rose pink

summer

Su

clump

Coreopsis verticillata 'Moonbeam'

2 ft.

2 ft.

light yellow

l. spr. - aut.

Su

clump

Coreopsis verticillata 'Zagreb'

12 - 18 in.

18 in.

yellow

e. summer

Su

clump

Coreopsis x 'Limerock Ruby'

18 - 22 in.

21 in.

redm yel cntr

summer-frost

Su

clump

Cornus sericea 'Silver & Gold' VARIEGATED GOLDSTEM DOGWOOD Variegated cornus is an old standard in botanical gardens and now this cultivar has caught their eye. Loose habit and wider than it is high, it grows gracefully rounded, multistemmed with nearly horizontal branches at the base. Does well in the full sun in hot summers and is vigorous. Can be shaped or controlled easily in height or width by simple pruning without affecting its beauty, or can be left to grow its own way. Stems are golden yellow and the brilliant leaves are light green with wide creamy white margins. Useful as a backdrop or for architectural framework and is also excellent for massing large areas. Holds soil well on slopes where its golden stems are even more striking in winter scenes.

Cornus sericea 'Silver & Gold'

6 - 10 ft.

5 - 8 ft.

white

summer

Su-pSh

shrub

Corydalis lutea YELLOW BLEEDING HEART is best when grown in a moist, slightly alkaline soil. The foliage is lacy and delicate, yet forms in clumps with tiny cool green leaves that scatter densely about. Blooms throughout the season, but profusely in spring, with another surge when temperatures cool off later in the season. Self sows freely.

Corydalis lutea

12 - 15 in.

12 - 18 in.

yellow

spring - aut.

pSh

clump

Corydalis elata

8 - 12 in.

12 - 18 in.

cobalt blue

spring - sum.

Su-pSh

clump

Corydalis 'Balckberry Wine'

10 in.

18 in.

purple

spring-sum.

pSh

clump

Crocosmia ‘Lucifer’  CROCOSMIA With scarlet red flowers flaming above iridaceae like foliage, Crocosmia’s beckon hummingbirds to the garden.  Plants can be short lived north of zone 6 and hardiness is relative to plant and corm size.  In the northeast they are well worth their short stay, adding a sharp architectural form to the full sun perennial border.

Crocosmia 'Lucifer'

4 ft.

1 ft.

scarlet-red

l.summer

Su-pSh

clump,spreader

Plant Descriptions: Beginning with Letter D 

BOTANICAL NAME

HEIGHT

SPACING

COLOR

SEASON

LIGHT

HABIT

Dalea purpurea PURPLE PRAIRIE CLOVER This important prairie legume adds nitrogen naturally to the soil. Grows on most well drained soils preferring dry to medium moisture, in sand, loam or clay. Fine textured leaves and masses of tiny flowers that are dark purple (occasionally crimson or pink)

Dalea purpurea

1 - 3 ft.

12 in.

purple

summer

Su

spreader
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