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1 Low Maintenance Perennials Low Maintenance Perennials Low Maintenance Perennials Low Maintenance Perennials Dr. Harlene Hatterman-Valenti North Dakota State University [email protected] Why include perennials in Why include perennials in Why include perennials in Why include perennials in your landscape? your landscape? your landscape? your landscape? Season-long array of color with little input each year Compared to shrubs Compared to annuals Less mowing Therapeutic Benefits Benefits Benefits Benefits Sensory stimulation Improving memory and concentration Easing emotional pain from abuse or bereavement Reducing physical pain www.friendshospitalonline.org/horth erapy.htm More Benefits More Benefits More Benefits More Benefits Teaching responsibility Reducing stress and anger Enhancing productivity and problem solving Re-employment for people with disabilities Essential elements of low Essential elements of low Essential elements of low Essential elements of low maintenance perennials maintenance perennials maintenance perennials maintenance perennials Hardy in your USDA zone Tolerates local summer conditions without supplement care Do not require special soil type/pH Light requirements appropriate for location Other elements of low maintenance Other elements of low maintenance Other elements of low maintenance Other elements of low maintenance perennials perennials perennials perennials Long-lived, infrequent division (3–5 yr) Not aggressive -spreading Very little input for care (no staking, DH) Withstands summer heat & occasional drought Slow growing and long bloom period Leaves attractive even when not blooming

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Page 1: Low Maintenance Perennials - North Dakota State UniversityLow Maintenance Perennials Dr. Harlene Hatterman-Valenti North Dakota State University h.hatterman.valenti@ndsu.edu Why include

1

Low Maintenance PerennialsLow Maintenance PerennialsLow Maintenance PerennialsLow Maintenance Perennials

Dr. Harlene Hatterman-Valenti

North Dakota State University

[email protected]

Why include perennials inWhy include perennials inWhy include perennials inWhy include perennials inyour landscape?your landscape?your landscape?your landscape?

•Season-long array of color with little input

each year

•Compared to shrubs

•Compared to annuals

•Less mowing

•Therapeutic

BenefitsBenefitsBenefitsBenefits

•Sensory stimulation

•Improving memory

and concentration

•Easing emotional

pain from abuse or

bereavement

•Reducing physical

pain

www.friendshospitalonline.org/hortherapy.htm

More BenefitsMore BenefitsMore BenefitsMore Benefits

•Teaching responsibility

•Reducing stress and anger

•Enhancing productivity and problem solving

•Re-employment for people with disabilities

Essential elements of low Essential elements of low Essential elements of low Essential elements of low maintenance perennialsmaintenance perennialsmaintenance perennialsmaintenance perennials

•Hardy in your USDA zone

•Tolerates local summer conditions without

supplement care

•Do not require special soil type/pH

•Light requirements appropriate for location

Other elements of low maintenance Other elements of low maintenance Other elements of low maintenance Other elements of low maintenance perennialsperennialsperennialsperennials

•Long-lived, infrequent division (3–5 yr)

•Not aggressive - spreading

•Very little input for care (no staking, DH)

•Withstands summer heat & occasional

drought

•Slow growing and long bloom period

•Leaves attractive even when not blooming

Page 2: Low Maintenance Perennials - North Dakota State UniversityLow Maintenance Perennials Dr. Harlene Hatterman-Valenti North Dakota State University h.hatterman.valenti@ndsu.edu Why include

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Armeria maritimaArmeria maritimaArmeria maritimaArmeria maritimaSea Pink, Common Thrift, Sea ThriftSea Pink, Common Thrift, Sea ThriftSea Pink, Common Thrift, Sea ThriftSea Pink, Common Thrift, Sea Thrift

• Height: 3–12 in.

• Light: FS

• Flower: Spring

• Zone: 4– 8

• Other: ribbed, linear leaves.

• Sm head of flowers, 1-in

diameter.

• Best in dry, infertile soils.

•Moist, fertile soils cause

rots.

• Slow growing clump.

• Prop. by seed, division.

Arisaema triphyllumArisaema triphyllumArisaema triphyllumArisaema triphyllumJackJackJackJack----inininin----thethethethe----Pulpit, Indian TurnipPulpit, Indian TurnipPulpit, Indian TurnipPulpit, Indian Turnip

• Height: 1–2 ft

• Light: PS - Shade

• Flower: Spring

• Zone: 4–9

• Other: needs moist soil.

• Poisonous except for roots/tubers.

• Propagate by seed - 3 yr to flower.

• Red berries during early fall.

Amsonia tabernaemontanaAmsonia tabernaemontanaAmsonia tabernaemontanaAmsonia tabernaemontanaBlue Star FlowerBlue Star FlowerBlue Star FlowerBlue Star Flower

• Height: 1–3 ft.

• Light: FS – PS (less flwrs)

• Flower: Spring

• Zone: 3(4)–9

• Other: alt., shiny, willow-like leaves.

• Loose, terminal cluster of star

flowers.

• Fuzzy buds

• Stems tinged with red.

• Best in moist soil, tolerates drought.

•Milky sap may cause skin irritation..

• Propagate by seed.

Asarum canadenseAsarum canadenseAsarum canadenseAsarum canadenseCanadian Wild GingerCanadian Wild GingerCanadian Wild GingerCanadian Wild Ginger

• Height: 6–12 in.

• Light: PS - Sh

• Flower: Mid–late Spr

• Zone: 4–8

• Other: hairy, heart-shaped,

evergreen leaves.

• Purple-brown cup-shaped flowers

(no petals).

• Good ground cover.

• Best in moist, high OM soil.

• Used by Native Americans to treat

various ailments.

• Propagate division (rhizomes).

Baptisia australisBaptisia australisBaptisia australisBaptisia australisFalse Indigo, Blue IndigoFalse Indigo, Blue IndigoFalse Indigo, Blue IndigoFalse Indigo, Blue Indigo

• Height: 3–4 ft.

• Light: FS – PS

• Flower: M.–L. Spring

• Zone: 3–9

• Other: 3-leaflet cmpd leaves.

• Long, terminal, erect raceme of

flowers.

• Black pods are used in dried

arrangements.

•May need staking if grown in PS.

• Slow growing, rarely need to

divide.

• Propagate by division, seed (hard

seedcoat).

Brunnera macrophyllaBrunnera macrophyllaBrunnera macrophyllaBrunnera macrophyllaSiberian Bugloss, False ForgetSiberian Bugloss, False ForgetSiberian Bugloss, False ForgetSiberian Bugloss, False Forget----memememe----notnotnotnot

• Height: 12–18 in.

• Light: PS - Sh

• Flower: Spring

• Zone: 3–8

• Alt. heart-shaped leaves at base,

oblong & pointed on flower stalk.

• Small 5-petal blue flwrs on raceme.

• New cvs w/ showy leaves.

• Divide when clump center

deteriorates (short rhizomes).

• Propagate seed, division, root

cuttings (self seeds-species).

Page 3: Low Maintenance Perennials - North Dakota State UniversityLow Maintenance Perennials Dr. Harlene Hatterman-Valenti North Dakota State University h.hatterman.valenti@ndsu.edu Why include

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Dicentra eximia/ D. formosaDicentra eximia/ D. formosaDicentra eximia/ D. formosaDicentra eximia/ D. formosaFringed BleedingFringed BleedingFringed BleedingFringed Bleeding----heart, Plume Bleedingheart, Plume Bleedingheart, Plume Bleedingheart, Plume Bleeding----heartheartheartheart

• Height: 12–18 in.

• Light: PS (FS water reg.)

• Flower: L Spr – M Sum

• Zone: 3–9

• Other: fern-like, gray-blue leaves

(ternately cmpd).

• Heart-shaped flowers on

branched raceme.

• Flowering period is much longer

than spectab.

• Doesn’t go dormant, cut flower.

• Propagate by seed, division, root

cuttings.

Epimedium alpinumEpimedium alpinumEpimedium alpinumEpimedium alpinumAlpine BarrenrootAlpine BarrenrootAlpine BarrenrootAlpine Barrenroot

• Height:6–10 in

• Light: PS – Sh

• Flower: Spring

• Zone: 4–7

• Other: best growth in rich,

moist soil.

• Loose panicle of red sepal and

yellow petal flowers.

• Groundcover.

• Tolerates drought once

established.

• Propagate by division.

Iris sibiricaIris sibiricaIris sibiricaIris sibiricaSiberian IrisSiberian IrisSiberian IrisSiberian Iris

• Height: 2–4 ft (few cvs. 12–18”)

• Light: FS – PS

• Flower: L. Spr.

• Zone: 3–9

• Other: best growth in fertile,

moist soil.

• Blooms after G. iris & before J.

iris – no beard.

• Divide in the spring.

• Less suscept. to iris borer or

soft rot.

• Cut back to 6 “ in the fall.

Mertensia virginicaMertensia virginicaMertensia virginicaMertensia virginicaVirginia bluebellsVirginia bluebellsVirginia bluebellsVirginia bluebells

• Height: 1–2 ft.

• Light: PS – Sh

• Flower: Spring

• Zone: 3– 8

• Other: alt., oval, smooth lvs.

• Nodding cluster of trumpet-shaped,

blue flowers.

• Pinkish flower buds turn blue.

• Best in moist, rich soils.

• Goes dormant in summer.

• Propagate by seed or division.

Phlox subulataPhlox subulataPhlox subulataPhlox subulataMoss Phlox, Moss Pink, Ground PinkMoss Phlox, Moss Pink, Ground PinkMoss Phlox, Moss Pink, Ground PinkMoss Phlox, Moss Pink, Ground Pink

• Height: 3–6 in.

• Light: FS

• Flower: E – Mid Spring

• Zone: 3– 9

• Other: small, stiff, linear lvs.

• Dense terminal panicle of 5-lobed

flowers.

• Spider mite & rust problem?

• Best – cut back foliage ½ way after

flowering.

• Propagate by layering, division,

stem cuttings.

Phlox stoloniferaPhlox stoloniferaPhlox stoloniferaPhlox stoloniferaCreeping PhloxCreeping PhloxCreeping PhloxCreeping Phlox

• Height: 6–12 in.

• Light: PS - Sh

• Flower: E–Mid Spring

• Zone: 3–9

• Other: opp. oval leaves.

• Dense terminal panicle of 5-

unnotched flowers.

• Spreads by stolons.

• Best in PSh and moist soil.

• Propagate by division or stem

cuttings.

Page 4: Low Maintenance Perennials - North Dakota State UniversityLow Maintenance Perennials Dr. Harlene Hatterman-Valenti North Dakota State University h.hatterman.valenti@ndsu.edu Why include

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Podophyllum peltatumPodophyllum peltatumPodophyllum peltatumPodophyllum peltatumMayappleMayappleMayappleMayapple

• Height: 1–1.5 ft.

• Light: PS – Sh

• Flower: Spring

• Zone: 3–8

• Other: 1-2, deeply-divided, palmate-

lobed, umbrella-like lvs.

• Single, nodding, waxy, white flwr.

• Plants with 1 leaf will not flower.

• Edible, fleshy fruit turns golden when

ripe.

• Leaves & roots poisonous.

• Tolerates dry, drought soils.

• Goes dormant in summer.

• Propagate by seed or division.

Pulsatilla vulgarisPulsatilla vulgarisPulsatilla vulgarisPulsatilla vulgarisPasque FlowerPasque FlowerPasque FlowerPasque Flower

• Height: 10–12 in.

• Light: FS – PS

• Flower: E.– Mid Spring

• Zone: 4–8

• Other: hairy, tri-pinnately divided

leaves.

• Solitary, cup-shaped flwrs.

• Clematis-like seed heads.

• Root rot in poorly drained soils.

• Fairly drought tolerant in cooler

climates.

• Propagate by seed, division, root

cuttings.

Sanguinaria canadensisSanguinaria canadensisSanguinaria canadensisSanguinaria canadensisBloodrootBloodrootBloodrootBloodroot

• Height:6–10 in

• Light: PS – Sh

• Flower: Spring

• Zone: 3–8

• Other: best growth in rich, well-

drained soil.

• Flower blooms as the palmate,

lobed leaf unfurls.

• Flower closes at night.

• All parts exude bright red-orange

sap when cut.

• Goes dormant late summer.

• Propagate by division.

Smilacina racemosaSmilacina racemosaSmilacina racemosaSmilacina racemosaFalse Solomon’s SealFalse Solomon’s SealFalse Solomon’s SealFalse Solomon’s Seal

• Height: 2–3 ft.

• Light: PS – light Sh

• Flower: L.Spr.– E.Sum.

• Zone: 3–7

• Other: alt., mostly sessile leaves.

•White panicle of flowers becomes

red berries.

• Thrives in shaded, moist soils.

• Propagate by seed or division.

Achillea filipendulinaAchillea filipendulinaAchillea filipendulinaAchillea filipendulinaFernleaf YarrowFernleaf YarrowFernleaf YarrowFernleaf Yarrow

• Height: 3–4 ft.

• Light: FS

• Flower: L. Spring–M. Summer

• Zone: 3– 8

• Other:1–2 pin divided fern-like lvs.

• Dense, cmpd, convex yellow corymbs.

•May require staking if not sunny & dry.

• Deer & rabbit resistant.

• Cut/dried flower – cut before pollen

develops.

• Numerous hybrids – rebloom, shorter,

sturdier.

• Prop by seed, division, stem cuttings.

Alchemilla mollisAlchemilla mollisAlchemilla mollisAlchemilla mollisLady’s MantleLady’s MantleLady’s MantleLady’s Mantle

• Height: 8–18 in.

• Light: FS – PS

• Flower: L. Spr - E. Sum

• Zone: 4–7

• Other: blue-green, fuzzy almost

cylindrical leaves.

• Airy panicle of small yellow, petal-less

flowers.

• Doesn’t like wet feet or compacted

soil.

• Crown rot when nights are warm &

humid.

• Flower used as cut-flower.

• Propagate by seed, division.

Page 5: Low Maintenance Perennials - North Dakota State UniversityLow Maintenance Perennials Dr. Harlene Hatterman-Valenti North Dakota State University h.hatterman.valenti@ndsu.edu Why include

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Andropogon gerardiiAndropogon gerardiiAndropogon gerardiiAndropogon gerardiiBig Bluestem, Turkey Foot, Beard GrassBig Bluestem, Turkey Foot, Beard GrassBig Bluestem, Turkey Foot, Beard GrassBig Bluestem, Turkey Foot, Beard Grass

• Height: 3–10 ft.

• Light: FS - PS

• Flower: Fall

• Zone: 4–9

• Other: bird’s foot – like seedheads.

• Stem turns blue-purple as matures.

• Propagate by division (bunch type),

seed.

• Used by Native Americans for

indigestion.

• Native grass for wetlands and dry

prairies.

Aruncus dioicusAruncus dioicusAruncus dioicusAruncus dioicusGoat’s BeardGoat’s BeardGoat’s BeardGoat’s Beard

• Height: 4–6 ft.

• Light: FS – PS (FS if cool summers)

• Flower: E. Summer

• Zone: 3–7

• Alt, pinnate cmpd leaves.

• Dense, small, white flowers on

large panicles.

•Male plants have showier flowers

• Prop by seed, division.

• Var. astilboides: minature selection

18 to 24” tall.

Bouteloua curtipendulaBouteloua curtipendulaBouteloua curtipendulaBouteloua curtipendulaSide Oats GramaSide Oats GramaSide Oats GramaSide Oats Grama

• Culture: Native, warm-season grass,

drought resistant, adapts to a wide

range of conditions; FS.

• Habit: Clump grass, 1 ½–2 ½

ft tall.

• Season of bloom: July-frost;

purple-tinted, erect flowers.

• Utilization: Groundcover,

massing and in meadows.

• Hardiness: Zones 4–9.

Bouteloua gracilisBouteloua gracilisBouteloua gracilisBouteloua gracilisBlue GramaBlue GramaBlue GramaBlue Grama

• Culture: Native, warm-season grass,

tolerant of extreme cold and heat.

Prefers loamy or sandy soils; FS.

• Habit: Fine-textured, clump grass, 8-

24 in tall. Flowers may reach 12 in

above the plant.

• Season of bloom: Mid to late summer

until frost. Flowers attached to the

stem at right angles; resemble tiny

combs or mosquito larvae.

• Utilization: Rock gardens, naturalized

areas and as a turfgrass.

• Hardiness: Zones 3–10.

Calamagrostis acutifloraCalamagrostis acutifloraCalamagrostis acutifloraCalamagrostis acutifloraFeather Reed GrassFeather Reed GrassFeather Reed GrassFeather Reed Grass

• Height: 4–5 ft

• Light: FS

• Flower: E. Sum

• Zone: 4–8

• Other: does well along water

(damp/wet).

• Does ok in heavy soil.

• One of the first orn. grasses to

flower.

• Spring division-sterile seeds.

Geranium sanguineumGeranium sanguineumGeranium sanguineumGeranium sanguineumBloodred GeraniumBloodred GeraniumBloodred GeraniumBloodred Geranium

• Height: 6–12 in.

• Light: FS – PS

• Flower: L. Spr–E. Sum

• Zone: 3–8

• Other: cylindrical lvs - lobes.

• Solitary, axillary, 5-petal flowers.

• Foliage turns red after first hard frost.

• Prefers moist, rich soils - spreads.

• Buy sterile cvs: John Elsley’.

• Propagate by division, tip cuttings.

Page 6: Low Maintenance Perennials - North Dakota State UniversityLow Maintenance Perennials Dr. Harlene Hatterman-Valenti North Dakota State University h.hatterman.valenti@ndsu.edu Why include

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Geranium macrorrhizumGeranium macrorrhizumGeranium macrorrhizumGeranium macrorrhizumBigroot GeraniumBigroot GeraniumBigroot GeraniumBigroot Geranium

• Height: 12–18 in.

• Light: FS – PS

• Flower: L.Spr–E. Sum

• Zone: 3–8

• Other: basal, palmately-lobed (5–7)

hairy, leaves.

• Loose cluster of 5-petal flowers.

• Dark red, inflated calyx.

• Prefers moist, well-drained rich soils.

• Doesn’t self-seeds as others.

• Propagate by seed, division, stem

cuttings.

Asclepias tuberosaAsclepias tuberosaAsclepias tuberosaAsclepias tuberosaButterfly Weed, Indian Paintbrush, Pleurisy RootButterfly Weed, Indian Paintbrush, Pleurisy RootButterfly Weed, Indian Paintbrush, Pleurisy RootButterfly Weed, Indian Paintbrush, Pleurisy Root

• Height: 2–3 ft.

• Light: FS

• Flower: L. Spr–M. Sum

• Zone: 3–9

• Other: sword-shaped leaves w/ stiff

hairs.

• Umbel of flowers.

• Doesn’t do well in wet soils.

• Very late emerging in Spring.

• Propagate seed, stem tip

cuttings, root cuttings.

Cimicifuga racemosaCimicifuga racemosaCimicifuga racemosaCimicifuga racemosaBlack Snake root, Bugbane, Black CohoshBlack Snake root, Bugbane, Black CohoshBlack Snake root, Bugbane, Black CohoshBlack Snake root, Bugbane, Black Cohosh

• Height: 4–6 ft

• Light: FS - PS

• Flower: Mid. Summer

• Zone: 3–8

• 3-divided lvs w/ 3-lobed leaflets.

• Long racemes w/ sm, white, flowers.

• Best in moist, high OM soil.

• Native woodland plant.

•Medicinal uses.

• Prop. by division.

Dictamnus albusDictamnus albusDictamnus albusDictamnus albusGas Plant, Burning BushGas Plant, Burning BushGas Plant, Burning BushGas Plant, Burning Bush

• Height: 2–3 ft.

• Light: FS

• Flower: L Spr–E Sum

• Zone: 3–9

• Other: alt., odd pinnate (9–11

leaflets), ovate lvs – lemony scent if

crushed.

• Showy 5 petal–10 stamen flwrs.

• Attractive seed pods.

• Doesn’t transplant well.

• Propagate by seed: 6–8 wk strat.

Echinacea purpureaEchinacea purpureaEchinacea purpureaEchinacea purpureaPurple Coneflower, Black Sampson, SnakerootPurple Coneflower, Black Sampson, SnakerootPurple Coneflower, Black Sampson, SnakerootPurple Coneflower, Black Sampson, Snakeroot

• Height: 2–4 ft.

• Light: FS - PS

• Flower: Summer

• Zone: 3–8

• Other: dark green, toothed, rough

leaves.

• Large daisy-like flowers w/

drooping rays.

• Leaf spot & J. beetle may be

problematic.

• Drought tolerant.

• Propagate by root cuttings,

division.

FestucaFestucaFestucaFestuca cinerea (F. glauca)cinerea (F. glauca)cinerea (F. glauca)cinerea (F. glauca)Blue FescueBlue FescueBlue FescueBlue Fescue

• Height: 6–12 in.

• Light: FS

• Flower: Summer

• Zone: 4–8

• Other: many fine, blue-green

leaves.

• Slender nodding spikelets.

• Can tolerate dry, infertile soil.

• Poor in heavy, wet soils.

• Clump forming, w/ deeper

blue color in FS.

• Propagate by seed, division.

Page 7: Low Maintenance Perennials - North Dakota State UniversityLow Maintenance Perennials Dr. Harlene Hatterman-Valenti North Dakota State University h.hatterman.valenti@ndsu.edu Why include

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Rudbeckia fulgidaRudbeckia fulgidaRudbeckia fulgidaRudbeckia fulgidaOrange ConeflowerOrange ConeflowerOrange ConeflowerOrange Coneflower

• Height: 15–30 in.

• Light: FS – PS

• Flower: Mid Sum – Fall

• Zone: 3–9

• Other: dark green, ovate, 3-veined

basal leaves.

• Daisy-like flowers w/ black discs.

• Short rhizomes form large clump.

• P. mildew - NOT a problem.

• Propagate by division, term.

cuttings, seed.

Hemerocallis Hemerocallis Hemerocallis Hemerocallis spp.spp.spp.spp.Daylily (http://www.daylilies.org/)Daylily (http://www.daylilies.org/)Daylily (http://www.daylilies.org/)Daylily (http://www.daylilies.org/)

• Height: 1–4 ft.

• Light: FS–PS (PS best for pastel colors)

• Flower: E. Sum – M. Fall (some

rebloomers)

• Zone: 3–10

• Long, slender, fountain-like leaves.

• Trumpet-shaped flowers, singles &

double.

•Most are diurnal.

• Dormant and evergreen types.

• Propagate by seed, division.

Hosta sp. H: 8–36” / 30” Plantain lily PS – Sh Z: 3–8Hosta photos:http://www.hostalibrary.org/index.html

Nepeta spp.Nepeta spp.Nepeta spp.Nepeta spp.Catmint, CatnipCatmint, CatnipCatmint, CatnipCatmint, Catnip

• Height: 1–4 ft.

• Light: FS - PS

• Flower: E. Summer

• Zone: 4–8

• Other: opp., gray-green lvs.

• Square stems, all aromatic.

• Flowers grouped in clusters along the

spike.

• Deer resistant.

• Shear back halfway mid-sum for

repeat blooms.

•Medicinal herb – sedative.

• Propagate by seed, division or

terminal cuttings.

Paeonia hybridsPaeonia hybridsPaeonia hybridsPaeonia hybridsPeony, Chinese Peony, Hybrid PeonyPeony, Chinese Peony, Hybrid PeonyPeony, Chinese Peony, Hybrid PeonyPeony, Chinese Peony, Hybrid Peony

• Height: 3 ft.

• Light: FS - PS

• Flower: L. Spr - E. Sum

• Zone: 3–8

• Other: biternate, entire or lobed leaves.

• Large, fragrant, flowers (single, dbl,

anem).

• Too shaded or deep planting inhibits

flowering.

• Tree root compet. or late freeze inhib.

flowering.

• Blight–sanitation (1˚ dbls).

• Propagate by division, seed

(5–7 yr to flower).

Platycodon grandiflorusPlatycodon grandiflorusPlatycodon grandiflorusPlatycodon grandiflorusBalloon FlowerBalloon FlowerBalloon FlowerBalloon Flower

• Height: 18–36 in.

• Light: FS - PS

• Flower: Summer

• Zone: 3–8

• Other: pointed oval, shiny, toothed

leaves.

• Star-shaped terminal flowers.

• Doesn’t tolerate wet soil.

• Very slow to emerge in the Spring.

• Propagate by seed, division

(difficult).

Page 8: Low Maintenance Perennials - North Dakota State UniversityLow Maintenance Perennials Dr. Harlene Hatterman-Valenti North Dakota State University h.hatterman.valenti@ndsu.edu Why include

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Perovskia atriplicifoliaPerovskia atriplicifoliaPerovskia atriplicifoliaPerovskia atriplicifoliaRussian Sage, Azure SageRussian Sage, Azure SageRussian Sage, Azure SageRussian Sage, Azure Sage

• Height: 3–4 ft.

• Light: FS

• Flower: Summer

• Zone: 3–8

• Other: gray-white, strongly dissected

leaves.

• 2-lipped flowers on spike above

foliage.

• Plant base is woody, cut back to 3-4” in

spring.

• Tolerant of dry soils.

• Prop by seed, tip cuttings.

Salvia x superbaSalvia x superbaSalvia x superbaSalvia x superbaPerennial Salvia, Hardy SagePerennial Salvia, Hardy SagePerennial Salvia, Hardy SagePerennial Salvia, Hardy Sage

• Height: 2–3 ft.

• Light: FS

• Flower: Summer

• Zone: 3–8

• Other: opposite, hairy, leaves – sessile

on stem.

• Spike-like raceme of violet flowers.

• Prefers well-drained, moist soils.

• Cool evenings prolong flowering & ↑

intensity.

• Tolerant of drought.

• Prop by div & stem cuttings.

SchizachyriumSchizachyriumSchizachyriumSchizachyrium scopariumscopariumscopariumscopariumLittle BluestemLittle BluestemLittle BluestemLittle Bluestem

• Culture: Native, warm-season grass,

tolerates any soil except boggy, wet or

mucky; FS.

• Habit: Upright, slightly rhizomatous,

clump grass; 2–4 ft tall. Foliage turns

crimson in autumn.

• Season of bloom: Flower spikes

bearing

fluffy plumes from August through

September.

• Utilization: Specimen, accent,

grouping and massing.

• Hardiness: Zones 3–10.

http://www.ces.ncsu.edu/depts/hort/consumer/factsheets/ornamental_grass

• Culture: Native, warm-season, drought

tolerant, prefers moist loam; FS.

• Habit: Upright, clumping,

produces foliage 5–7 ft tall.

• Season of bloom: Stiff, erect spikes

bearing tan panicles 2–3 ft above foliage

in late summer.

• Utilization: Naturalized areas, massing

and accent plantings.

• Hardiness: Zones 4–9.

SorghasturmSorghasturmSorghasturmSorghasturm nutansnutansnutansnutans

Indian GrassIndian GrassIndian GrassIndian Grass

http://sandybottom.com/assets/grasses/'Sioux%20Blue'%20Indian%20Grass.jpg

Chasmanthium latifoliumChasmanthium latifoliumChasmanthium latifoliumChasmanthium latifoliumSea Oats, Spangle Grass, Indian WoodoatsSea Oats, Spangle Grass, Indian WoodoatsSea Oats, Spangle Grass, Indian WoodoatsSea Oats, Spangle Grass, Indian Woodoats

• Height: 30–36 in.

• Light: FS – PS:darker green/taller

• Flower: L. Sum – Fall

• Zone: 4–8

• Other: 0.5–1” wide, smooth

grass blades.

• Flat green spikelets on long,

drooping panicles.

• Seedhead turns red-brown &

persists in winter.

• Used in dried arrangements.

• Tends to self-seed.

• Propagate by seed, division.

Chelone glabraChelone glabraChelone glabraChelone glabraTurtleheadTurtleheadTurtleheadTurtlehead

• Height: 2–3 ft.

• Light: PS

• Flower: Early Fall

• Zone: 3–8

• Other: dark green leaves.

• Snapdragon-like flowers.

• Black pods are used in dried

arrangements.

• Best in moist, rich soil.

• Attracts butterflies.

• Pinch stems in spring to reduce

height.

• Propagate by division, seed or

cuttings.

Page 9: Low Maintenance Perennials - North Dakota State UniversityLow Maintenance Perennials Dr. Harlene Hatterman-Valenti North Dakota State University h.hatterman.valenti@ndsu.edu Why include

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Liatris spicataLiatris spicataLiatris spicataLiatris spicataSpike GaySpike GaySpike GaySpike Gay----feather, Blazing Star, Button Snakerootfeather, Blazing Star, Button Snakerootfeather, Blazing Star, Button Snakerootfeather, Blazing Star, Button Snakeroot

• Height: 1.5–3 ft.

• Light: FS – PS

• Flower: M. Sum–L. Fall

• Zone: 3–9

• Linear basal leaves.

• Spike w/ 25–50 flowers matures

from top down.

• Excellent cut/dried flower.

• Intolerable of wet soil during late

fall/winter.

• Propagate by seed (2 yr), division

(corm).

Sedum spectabileSedum spectabileSedum spectabileSedum spectabileShowy Stonecrop Sedum, LiveShowy Stonecrop Sedum, LiveShowy Stonecrop Sedum, LiveShowy Stonecrop Sedum, Live----ForeverForeverForeverForever

• Height:1.5–2 ft.

• Light: FS – PS

• Flower: L. Sum–L. Fall

• Zone: 3–10

• Other: fleshy, spoon-shaped leaves.

• Dense terminal cyme.

• Likes well-drained soils.

• Dead flower stalks attractive during

winter.

• Grows in dry soil.

• Attractive during winter.

• Propagate by stem cuttings,

division.