Term
|
Definition
Acer griseum
KEY FEATURES
-Young & mature trees have peeling bark
-opposite palmately compound 3 leaflet (Trifoliate) leaves
-Flowers & fruits are not ornamental
-Variable Fall color
DESCRIPTION
-Valued for its ornamental bark
-Limited availability b/c its diff. to propagate
-Excellent small ornamental tree
PESTS
-Verticillium Wilt
-Cottony Maple Scale
Liabilities
-Slow growth rate
-Marginally hardy in zone 5 |
|
|
Term
|
Definition
Amelanchier
KEY FEATURES
-Swollen bud effective for 3 weeks
-Flowers effective 1-7days in Apr.
-Elliptical finely serrated 2" leaves
-Red to Purple fruit matures in June
-Clump form is most common
-Attractive bark
DESCRIPTION
-4 Season Interest
-Slow to medium growth
-Amelanchier taxanomy is confused & A. Canadensis & A. Laevis can be used interchaneable in the landscape
PESTS
-N/A
LIABILITIES
-Slow growth |
|
|
Term
|
Definition
Betula nigra
KEY FEATURES
-Alternate, broadly triangular, doubly serrated, silver undeerside
-Yellowish green fall color, Golden yellow in good yrs
-Male catkins 3" long in Apr.
-Green female catskins mature later
-Exfoliating Bark
DESCRIPTION
-Rapid growing
-Valued for ornamental bark
-Resistant to bronze birch borer
-Commonly multi trunked
PEST/DISEASE SUSCEPT.
-Leaf miner
-Aphids
-April-Aug
LIABILITIES
-Alkaline soils lead to chloratic foliage |
|
|
Term
|
Definition
Gleditsia triacanthos var. inermis
KEY FEATURES
-Straight species has very long thorns
-Alternate, pinnate & bi-pinnately compound leaves w/ very small leaflets
-Flowers are inconspicuous
-Scaly bark w/ furrowed ridges
DESCRIPTION
-Excellent urban tolerant shade tree
-Var. inermis is thornless
-Can have good fall color
-Fruting is rare on cultivars
-Fruit litter can be a problem on straight species
INSECT/DISEASE SUSCEPT.
-Canker
-Webworms
-Feb-Nov
LIABILITIES
-Several cosmetic & major pests
-Surface roots w/ age |
|
|
Term
|
Definition
Liquidambar styraciflua
KEY FEATURES
-Alternate & 5-7 serrated & pointed lobes result in star shape
-Unique fruit, fruits are a litter problem
-Good to excellent Fall color
DESCRIPTION
-Rapidly growing shade tree w/ good fall color
-Fruit litter becomes a problem w/ age
-Flowers not significant
INSECT/DISEASE SUSCEPT.
-None
-None serious
LIABILITIES
-Fe chlorosis in alkaline soils
-Root system shallows
-Weak wood is prone to storm damage |
|
|
Term
Fruitless Weeping Mulberry
Chaparral Weeping Mulberry |
|
Definition
Morus alba 'Chaparral
KEY FEATURES
-Alternate leaves may be entire or lobed on the same branch
-Occasional autumn color
DESCRIPTION
-Weed tree despised due to fruit litter
-Weeping forms that are fruitless are good in landscape
-Flowers are not showy
-Introduced from China for silkworm production & edible fruit
INSECT/DISEASE SUSCEPT.
-Bacterial blight FEB-NOV.
-Cankers FEB-NOV.
-Scales & Mites JUN-AUG
LIABILITIES
-Limited seasonal appeal
-Messy fruit unless a fruitless cultivar
-Weak wooded |
|
|
Term
|
Definition
Carya sp.
KEY FEATURES
-Shaggy bark tends to peel off in long strips
-Pignut hickory does not have shaggy bark
-Alternate, odd pinnate 8-14" foliage commonly with 5 leaflets, serrated margin
DESCRIPTION
-C. ovata is a tall shade tree w/ shaggy bark that peels off in long strips on a straight trunk.
-other hickories, such as C. glabra, are common in parks & grounds
-Hickories are not widely grown in nurseries b/c coarse root system makes propagation & transplant diificult
-Striking autumn color
-Flowers & fruits are not significant
INSECT/DISEASE SUSCEPT.
-None serious
LIABILITIES
-Fruit & foliage can cause significant litter |
|
|
Term
|
Definition
Coreopsis verticillata
KEY FEATURES
-'Moonbeam' light shade of green
-Flowers in July then either sporadically or continuously til end of Summer
-Shear off insignificant fruit to promote re-bloom
DESCRIPTION
-Popular perrenial w/ cutleaf foliage
-Opposite sessile leaves become whorled around stems
-Extremely simple cutleafs appear compound
INSECT/DISEASE SUSCEPT.
-None serious
LIABILTIES
-Can spread beyond intended borders |
|
|
Term
|
Definition
Cornus alba 'Elegantissima'
KEY FEATURES
-C. alba 2" flower clusters in APR/MAY
-C. alba 'Bud's Yellow' Creamy white fruit quicly eaten by birds
-C. sericea bright red stems in winter
-C. alba 'Elegantissima' opposite eliptical leaves
DESCRIPTION
C. alba 'Elegantissima'
-Known for red winter stems
-Fast growing
-performs best if thinned or pruned to ground every other yr.
-Cornus alba & C. sericea are difficult to distinguish & are used interchangeably in the landscape
INSECT/DISEASE SUSCEPT.
-Crown/Stem Canker APR-SEPT
-Borers MAR-SEPT
LIABILITIES
-Pests |
|
|
Term
|
Definition
Cornus florida
KEY FEATURES
-Opposite, ovate leaf w/ veins parallel to margin. Excellent Fall color
-'Richland' ovoid fruit clusters SEPT-NOV
-Flowers late APR-early MAY
-Alligator skin bark
DESCRIPTION
-Small tree with 4 season appeal
-Performs below potential in alkaline soils
INSECT/DISEASE SUSCEPT.
-Borers MAY-SEPT
-Anthracnose MAY-SEPT
LIABILITIES
-Slow growth
-Not urban tolerant
-Several life threatening pests |
|
|
Term
|
Definition
Cornus kousa
KEY FEATURES
-Emerging bracts are yellowish, fading to white when fully open
-Trunk is very showy if lower branches are removed
-Intriguing green then red then purple fruit is qu9ickly eaten by birds
-Good Fall color
DESCRIPTION
-Multi-season small tree
-Leaves, opposite, broad, elliptic with major veins parallel to leaf margins
-3" bracts on June persist 4-6 weeks
INSECT/DISEASE SUSCEPT.
-None Serious
LIABILITIES
-Not really urban tolerant, though it is more so than flowering dogwood |
|
|
Term
|
Definition
Cornus mas
KEY FEATURES
-Exfoliating bark on trunks
-Fruit matures in July & is quickly eaten by birds
-Opposite, broad-elliptic 3" leaves. Veins parallel to margins
DESCRIPTION
-Noted for late winter/early Spring flowers that last +-3 weeks
-Vigorous growth
-Clean foliage
-Adapts well to naturalized & urban areas
INSECT?DISEASE SUSCEPT.
-None Serious
LIABILITIES
-Invasive w/age (Spreading branches)
-Can't keep turf underneath |
|
|
Term
|
Definition
Geranium 'Rozanne'
KEY FEATURES
-Deeply divided dark green, slightly marbled simple leaves
-loose cymes of 21/2" Lavender-blue blooms w/ 5 petals
DESCRIPTION
-Compact perrenial that produces violet blue flowers from late spring til frost
-Leaves may have good reddish bronze fall color in cooler climates
-Sterile hybrid of G. wallichiannum Buxtons variety & G. himalayense
-2008 PPA Perennial of the YR
INSECT/DISEASE SUSCEPT.
-None Serious
LIABILITIES
-Diminished bloom time in warmer climates |
|
|
Term
|
Definition
Sedum
KEY FEATURES
-S. Kamtschaticum weeds can be an issue w/ spreading types
-S. Autumn Joy clump type cultivar with late summer bloom. Flowers resemble broccli in spring & slowly change to pink
DESCRIPTION
-Several species with varying colors, forms, and textures
-Foliage is attractive in summer, then blooms in late summer after most plants have stopped
-Some may be semi evergreen
INS$ECT/DISEASE SUSCEPT.
-None Serious
LIABILITIES
-Must prune dead tops in winter
-Groundcover forms prone to weed invasion |
|
|
Term
|
Definition
Aesculus flava
KEY FEATURES
-Fall color can be good
-Smooth bark when young, becomes platy at maturity
-Yellow green flowers 7" x 3" pannicles in mid MAY
-Finely serrated leaves are opposite, palmately compound with 5-7 leaflets
DESCRIPTION
-Large native ohio tree w/ stately tall growth, yellow flowers in spring and clean foliage
-"Best" large buckeye for general landscape in Midwest
INSECT/DISEASE SUSCEPT>
-Less susceptible to disease vs other buckeyes
LIABILITIES
-Limited flowers compared to other buckeyes
-Some leaf litter in late summer
-Fruit litter in Autumn |
|
|
Term
|
Definition
Betula papyrifera
KEY FEATURES
-Flowers not showy.
-Fruits are largest among birches 2" x 0.25"
-Leaves alternate, serrated 2.5 to 4" long by 2" wide
-White bark is smooth & very showy.
-Bark may peel with age
DESCRIPTION
-Fast growing
-Best of white bark birches in Ohio
-Very cold tolerant
-Gray Birch (B. popilifolia) & Japanese white birch (B. playtphylla) are also used in landscapes, but not recommended
INSECT/DISEASE SUSCEPT.
-Bronze birch borer MAR-DEC.
-LeaF Miner MAY-JUN
LIABILITIES
-Does not tolerate heat |
|
|
Term
|
Definition
Ceratostigma plumbaginoides
KEY FEATURES
-Main flower flush from MAY-SEPT, then sporadically til frost
-Alternate broadly ovate 3" leaves
-Good bronze-red Fall color
DESCRIPTION
-Groundcover for sun to part shade w/ dark blue 1/2 to 1" 5-petal flowers in dense terminal groups
-Spreads by rhizomes & can be aggresive under optimal growing conditions
-Good for inter-planting w/ bulbs b/c foliage emerges late
INSECT/DISEASE SUSCEPT.
-None Serious
LIABILITIES
-Marginally hardy in zone 5. Best if not cut back until Spring
-Foliage is not evergreen |
|
|
Term
|
Definition
Echinacea purpurea
KEY FEATURES
-3" inch inflorescence w/ drooping petals
-'Kims Knee High' central disc like flowers are raised into a cone or dome shape
-'Big Sky Sunset' best flowering performance if situated w/ morning sun & afternoon shade
DESCRIPTION
-Perennial w/ pink lavender or white cream flowers that arise from a clump of course, basal foliage
-Blooms July-Aug w/ occassional rebloom if deadheaded
-Medium dark green basal leaves up to 8' long originate from crown. Alternating 4" leaves appear on flower stems
INSECT/DISEASE SUSCEPT.
-Leaf Scorch JULY-AUG
LIABILITIES
-Cosmetic leaf damage in late summer
-Self sowing can become problem in perennial beds over time |
|
|
Term
|
Definition
Eupatorium purpureum
KEY FEATURES
-'Little Joe' more compact culticar. Blooms July-SEPT.
-6" lance leaves whorled around stem
-E. rugosum 'Chocolate' White flowers * maroon leaves
DESCRIPTION
-Native genus often regarded as roadside weeds that has several ornamental attributes
-E. rogusum & E. purpureum reclassified into genus Eutrochium, based on whorled, not opposite, leaf arrangement.
-The 2 species freely hybridize
INSECT/DISEASE SUSCEPT.
-None Serious
LIABILITIES
-Leaf scorch if allowed to dry out |
|
|
Term
|
Definition
Fraxinus americana
KEY FEATURES
-Flowers not significant,
-Fruit (Sumaras) may cause litter
-Sometimes grafted to grn ash to improve urban tolertance
-Opposite pinnately compound leaves.
-Leaflets (7) are ovate & entire
DESCRIPTION
-Broad spreading large shade tree
-Moderate growth rate
-Excellent late Sept. Fall color'
-Not recommended due to EAB
INSECT?DISEASE SUSCEPT.
-EAB FEB-NOV.
LIABILITIES
-EAB
-Surface roots
-Low urban tolerance |
|
|
Term
|
Definition
Fraxinus pennsylvanica
KEY FEATURES
-Pinnately compound leaf w/ 5 leaflets that are commonly serrated
-Noticeable but ornamentally insignificant flowers in APR
-Excellent yellow orange fall color
-F. americana u- shaped bud scar
-F. pennsylvanica D-shaped bud scar
DESCRIPTION
-Upright irregular habit with rapid growth
-More adapted to urban conditions than white ash
-Not reccomended due to EAB
INSECT/DISEASE SUSCEPT.
-Aphids JUN-AUG.
-Plant Bug JUN-AUG.
-EAB FEB-NOV
LIABILITIES
-EAB |
|
|
Term
|
Definition
Spirea japonica
KEY FEATURES
-'Anthony Waterer 2-3" pink flowers in May
-Flowers sporadically throughout summer
-Yellow variant leaf shoots often emerge from the same plant
-'Goldflame' alternate ovate serrated leaves on short petiole.
-Emerging foliage is reddidh orange
DESCRIPTION
-'Goldflame' compact shrub w/ multi season appeal
-Can be lightly sheared
-Foliage color variants require full sun
-'Goldflame' and other yellow variants were once classified as Spirea x bumalda
-Fall color varies by cultivar
INSECT/DISEASE SUSCEPT.
-None Serious
LIABILITIES
-May spread beyond boundaries
-Moderate sucking growth |
|
|
Term
|
Definition
Spirea xvanhouttei
KEY FEATURES
-Flowers in 1-2" clusters, cover stems in APR. or early MAY
-Fruits not insignificant & are slightly detracting
-Dull bluish green summer foliage Fall color is rarely good
-Alternate bluish grn simple leaves to 2" are obovate w/ dentate margins
-S. nipponica 'Snowmound' similar but smaller species.
-'Snowmound is most common cultivar
DESCRIPTION
-VASE shaped & arching growth habit
-Known for Spring flowers
-Cross between S. trilobata & S. cantonienisis
-S. nipponica 'Snowmound' is a similar but smaller species that bloooms about 2 weeks later than bridalwreath spirea
INSECT/DISEASE SUSCEPT>
-None Serious
LIABILITIES
-Persistent fruiting stalks
-Aphids are cosmetic pests |
|
|
