perennials for late season color · hard after spring bloom for later summer flowering 0 best...
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Perennials for Late Season Color
Dennis Morgeson
Agent For Horticulture
Washington County
What are perennials?
0 Plants that live for several years
0 Mostly herbaceous in nature
0 Multiply by seeds and increase in size of parent plant
0 Most grow from a crown, stolons or rhizomes
0 Some live for a few years, some for decades
Perennial Considerations
Design issues:
0 Height, placement in the bed or border
0 Color combinations
0 Continuation of bloom
0 Foliage textures
Achillea filipendulina- Yarrow
0Flowers in late spring to summer
02-3 feet tall and wide, dwarf varieties 8-15 inches
0Few pests
0Borders, cut flowers, dried
0Cuttings or division in spring or fall, some by seed
0Varieties-Coronation Gold, Gold Coin Dwarf, Goldie, Moonshine
0Trim back after bloom for rebloom
Achillea millifolium- yarrow0 Wider range of colors
than previous species
0 Generally grows no more than 2 feet tall
0 Spreads faster, can become aggressive
0 Performs well in dry areas
0 Lots of varieties such as Paprika, Strawberry Seduction, Pomegranate, Summer Wine, etc.
0 Trim back after bloom for rebloom
Agastache Varieties
Black Adder Blue Fortune Golden Jubilee
Kudos Gold Raspberry Summer
Amsonia hubrichtii
Aster spp. - Asters
0Flowers in blues, violets, whites in summer and fall
01-6 feet tall, taller varieties must be staked
0Powdery mildew is the major pest
0Used for borders and cut flowers
0Propagate by division in spring
Asters
Blue Autumn Little Carlow
Winston Churchill
Aster tataricus “Jindai”
Baltonia asteroides (False Aster)
0 Grows 3-5 feet tall and wide will need staking
0 Plant in full to part sun, tolerant of a variety of soils
0 This is an undemanding native loved by butterflies!
0 Blooms August until frost
Pink Beauty
Snowbank
Ceratostigma plumbaginoides –leadwort
Plant in full to part sun
Will tolerate some shade
but prefers full sun in
average soil
Generally late to emerge
but blooms from mid
summer until frost and
gives a nice fall color
Wiry semi woody
groundcover, grows 9-12
inches tall and 18 inches
wide
Echinopsis0 Grows 3-4 feet tall by 2
feet
0 Full Sun
0 Poor to average soil
0 Well drained
0 Blooms early, mid, late summer
0 Blue Flowers
Blue Glow
Coreopsis -tickseed
0 Many species with varying plant habits
0 New colors and all bloom for an extended period, also varying foliage types
0 Dead head to extend bloom season, cut back hard after spring bloom for later summer flowering
0 Best divided regularly to maintain vigor
Coreopsis
Cosmic Eye 12-20”Crème Brulee 8-12” Full Moon 18”
Coreopsis
Jethro Tull Red Satin Route 66 Sienna Sunset
Sweet Dreams
Zagreb Moonbeam
Echinacea – Coneflower
0Varied flower colors but the purple and white still seem hardier0Varying heights from 1-5 feet tall0Major pest is powdery mildew0Used as border or cut flowers0Divide clumps in spring or by seed0Deadhead for repeat bloom0Yellow Finch will eat seeds if allowed to mature
Coneflower
Cheyenne Spirit Firebird Double Decker
Leilani
Pallida*
Paradoxa* Secret Pride Pink Poodle
Eupatorium coelestinum –hardy ageratum
0 Very vigorous plant, particularly in moist soils
0 Cut back in summer to shorten and increase flowering
0 Divide regularly
Wayside
Eupatorium rugosum
0 Grows 3-5 feet tall and 3 feet wide
0 Mid summer to fall bloom
0 Full Sun to half sun
0 Normal soil even clay
0 Attracts butterflies, wet site tolerant as well
0 Purple green foliage also ads interestChocolate
Eupatorium purpureum* – Joe pye weed
0 Stately perennial can grow to 10‘ Native plant attracts butterflies
0 Smaller dwarf versions are available
0 May reseed around the garden
0 Enjoys wet locations but will grow in average garden soil
Joe Pye Weed
Gateway 6’ Fistulosum* 3-4’ Little Joe 3-4’
Euphorbia - spurge
0 Many different forms, some evergreen
0 Very tolerant of poor dry soils
0 Milky sap may be an irritant to skin or eyes
0 Deer resistant and drought tolerant
0 Often self seeds
Robbiae
Euphorbia
Bonfire Polychroma* Tiny Tim
Jade
DragonChameleon
Gaillardia x grandiflora –blanket flower
0 Very long bloom period in summer
0 Tends to be short lived
0 Excellent for dry areas
0 Often seeds itself in good soils
0 Deer resistant
0 Attracts butterflies
0 Drought Tolerant
Gaillardia
Bright Bicolour Yellow Peach Sun Flare
Red Sun Sun
Devil
Helenium autumnale-sneezeweed
0 Tall perennial valued for its fall blooms in yellow orange and red (newer shorter varieties)
0 Prune in summer or stake to support
0 Adaptable plant tolerates many soil types
0 Native
0 Can reseed
Sneezeweed
Mardi Gras
Moerheim
Beauty Autumnale*
Tiny Dancer
Red Jewel Carnival
Double Trouble
Heliopsis helianthoides
0Yellow flowers in summer and early fall
03-4 feet tall
0Few pests
0Used as a border or cut flower
0Propagate by seed or division
0Cut back after first flush of blooms for a later summer flush.
Heliopsis helianthoides
Summer Nights Summer Sun Lemon Queen
Lorraine
Sunburst
Asahi
Hibiscus moscheutos –Hardy Hibiscus
White, red, pink and bicolors in summer, newer varieties bloom until late fall3-8 feet tall, taller ones require stakingMajor pests are Japanese beetles and caterpillarsUsed as border plantsPropagate by division or seedPrefers moisture but tolerates drought
Hardy Hibiscus
Fantasia Fireball Kopper King Lady Baltimore
Lord
Baltimore Plum Crazy
Hardy Hibiscus
Robert
Flemming
Sweet Caroline Moscheutos* Blue River II Heartthrob
Cherry
Cheesecake
Midnight
MarvelSummer Storm
Hosta
Empress Wu
Hosta
Coast to Coast Designer Genes Curly Fries
Etched Glass Wu-La-La Blue Elf
Reblooming Bearded Iris
Various colors and bicolors with large flush of blooms late spring, and sporadic bloom late summer into fall.
2-4 feet tall
Main pest is iris borer
Used in borders
Propagate by division in fallConcertina
Bearded Iris
Double Your Fun Penny LanePeach Jam
Violet TurnerImmortalityRed Hot Chili
Perovskia atriplicifolia -Russian Sage
0Blue flowers in summer
04-6 feet tall, shrubby
0Few pests
0Used as a border
0Propagate by cuttings, division, or seed
Little Spire
Filigran
Superba
Physostegia virginiana –obedient plant
0 Native plant in pink or white
0 Late summer/fall
0 Spreads aggressively in good soils
0 Tolerates moist areas
0 Good cut flower
0 Divide frequently
Miss Manners
Pink Manners
Vivid
Rudbeckia fulgida - Black-eyed Susan
0Yellow flowers in summer to fall
02-3 feet tall
0Powdery mildew is the main pest problem
0Used as a border, cut or meadow flower
0Propagation by division or seed
Goldstrum
RudbeckiaFulgida Little Goldstar
lancinata*Autumn Sun
maxima*
Henry
Eilers
Salvia nemorosa – Garden Sage
0 Reliable plant with long bloom season in late spring
0 good for drier areas
0 Aromatic foliage
0 Cut back after bloom for a second, smaller flush of bloom
Blue Hill
Garden Sage
Caradonna
New Dimension
BlueMarcus May Night
Sensation
Deep Rose
Plumosa
Swan Lake
Sedum spp. - Stonecrop
0Yellow, orange, red flowers in summer but generally grown more for foliage
03-8 inches
0Few pests
0Used for edging, ground covers, rock gardens
0Propagation by division or seed
Sedum spectabile - Showy Sedum
0Pink, red, white, lilac flowers in late summer and early fall
012-18 inches tall
0Few pests
0Used as a border, edging, cut flower or dried
0Propagation by division or cuttings
0Drought tolerantAutumn Joy
SedumAutumn Charm
Autumn
Fire Blade Runner Blue Spruce Brilliant
CarlCherry TartDragons TongueMunstead RedMurale
SedumNeon Pool Party
Purple
Emperor
Red Cauli
T RexTurkish
Delight
Mendoza
Heuchera
0 Full Sun, Part Shade, Full Shade depending on varieties
0 Multiple leaf colors
0 Flowers red, pink, or white
0 Bloom time based on variety April –August
0 6” to 3 feet tall
Fire Alarm
Heuchera
Appletini Black Pearl Wild Rose
Peachberry Ice Pretty Pistachio Silver Gumdrop
Vernonia0 Grows 4 feet tall and
wide
0 Full Sun
0 Grows in average soil
0 Hardy rugged native
0 Will not tolerate consistently wet conditions but does well in rain garden situations
0 Once established drought tolerantSouthern Cross
Japanese Anemone
0 Grows 2-4 feet tall
0 Full sun to half shade
0 Tolerant of wet sites
0 Grows in normal, clay, or acidic soils
0 Blooms early to late fall
Pamina
Japanese Anemone
Whirlwind Prince Henry Margarette
Honorine JobertMax VogelPocahontas
Truly Hardy Chrysanthemum
0 Loosely called “Korean Mums”
0 Grows from 1-4 feet tall
0 Full Sun
0 Grows in normal, clay, or acidic soil
0 Will not tolerate conistently wet conditions
0 Blooms early to mid fall
Sheffield Pink
Varieties
Venus Samba Mei-kyo
Emperor of China Cambodian Queen Brandywine Sunset
.
Questions?