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Week 8 Plants Plant Group #3 Large Deciduous Shrubs.

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Presentation on theme: "Week 8 Plants Plant Group #3 Large Deciduous Shrubs."— Presentation transcript:

1 Week 8 Plants Plant Group #3 Large Deciduous Shrubs

2 Amelanchier canadensis – Serviceberry Location: South side of LeBaron and Catt Hall Multi-season appeal: white spring flowers, summer glossy leaves, fruits turn from green to red/purple in the fall, good orange/red fall color Rounded simple leaves are serrate, buds are long and narrow Twig tips may be reddish or purplish May have either single or multiple stems

3 Cornus alternifolia – Pagoda Dogwood Location: North side of Honors Building Leaves look whorled, but are alternate (most Cornus are opposite). Gummy sap (characteristic of Cornus spp.) Stratified, horizontal branching is a desirable trait White spring flowers, fruits turn black in fall, and leaves have reddish/purple fall color. Water sprouts and cankers may be common problems

4 Cornus mas – Corneliancherry Dogwood Location: West side of Pearson Hall Leaves are opposite, have gummy sap, and curved veins like other dogwoods Usually 3-5 vein pairs Yellow flowers in very early spring (March) Axillary (nonterminal) flower buds Upper surface of stem is purple, while lower surface is bright green

5 Cornus mas – Corneliancherry Dogwood Brown/orange flaky bark is somewhat ornamental Berries are bright red in late summer and are about ½ Fall color can be a reddish/purple

6 Cornus racemosa – Gray Dogwood Location: East of Horticulture Hall near entrance White flowers in spring followed by white drupes on red pedicles Leaves have curved veins and gummy sap A vigorous, suckering dogwood, reaching 20 Deep purple fall color

7 Euonymus alatus – Burning Bush Location: East side of Bessey Hall Opposite leaves are elliptical w/small serrations Winged twigs make great ID trait Fall fruits are red arils Grown mostly for its reliable red fall color Extremely common plant in horticulture Compactus is a smaller version, reaching 6 Species may reach 12

8 Euonymus atropurpureus – Eastern Wahoo Location: East side of Lagomarcino Hall Opposite leaves are serrate, but longer than those of E. alatus Young stems are green Fruits are a 4-lobed aril Not very common in horticulture, but is an interesting native plant Form is upright and loose and fall color may be yellow

9 Euonymus fortunei var. vegeta – Bigleaf Wintercreeper Location: Along path between Landscape Architecture and Food Science Opposite, glossy, serrated leaves on this broadleaf evergreen Stems and fleshy buds are green May have fruits Spreading and climbing (aerial roots on stems) Lots of insect and disease problems, particularly scales

10 Exochorda xmacrantha – Hybrid Pearlbush Location: South of Hamilton Hall Leaves are alternate and elliptical to lanceolate Leaves may have little spines at the tips, and stipules at the bases of the petioles Buds are plump and rusty colored White spring flowers are followed by 5-sided star-like fruit capsule Flowers are only ornamental appeal Bud and stipules

11 Hydrangea paniculata – Panicle Hydrangea Location: Southeast corner of Bessey Leaves arrangement is opposite (may be whorled) Blooms white in the fall, flowers fade to pink Panicles include sterile and fertile flowers

12 Philadelphus coronarius – Sweet Mockorange Location: East of Honors Building. Opposite leaves with few teeth along margin White spring flowers with sweet fragrance Nearly right angles of branch attachment Fruit (capsules) remain on the plant into fall Younger twigs are dark reddish, while older twigs are lighter tan An old fashioned shrub grown for its flowers

13 Rhus aromatica – Fragrant Sumac Location: Lincoln Way median and NE corner of library Trifoliate leaves with indentations along the margin Leaves are aromatic when crushed Male catkins form in the fall and pollinate yellow female flowers in the spring Potential for good red/purple fall color Gro-low only gets 2 tall and is wide spreading Good sumac for smaller spaces, groundcovers, and erosion control

14 Rhus typhina – Staghorn Sumac Location: East side of Catt Hall Large pinnately compound leaves have serrations Fuzzy pubescence on stems and petioles Colonizing large shrub with coarse appearance Striking red/purple fall color Inflorescences are also ornamental and remain into winter

15 Rhus typhina – Staghorn Sumac

16 Rhus glabra – Smooth Sumac Location: Northeast corner of Molecular Biology Smooth stems…no pubescence Otherwise similar to staghorn sumac All three sumacs weve covered in class are native

17 Syringa vulgaris – Common Lilac Location: Many places, Marston Hall Opposite leaves and large, green terminal buds in pairs. Chordate leaves are larger than those of S. chinensis. Advantage: Large, fragrant flowers, hundreds of cultivars Drawbacks: Leggy, irregular form, powdery mildew, single season appeal Other lilacs have better form, more disease resistance, and are more useful in residential landscapes

18 Viburnum dentatum – Arrowwood Viburnum Location: South of Horticulture Greenhouses Opposite, dentate (toothed), glossy leaves Buds are not valvate White, flat topped flowers in spring, followed by blue drupes – both ornamental An upright viburnum good for screening Usually good reddish-purple fall leaf color Good disease resistance and shade tolerance Native to Iowa and the Midwest

19 Viburnum dilatatum – Linden Viburnum Location: Near parking lot west of Forker (near fir trees) Round leaves are opposite with small serrations Pubescent petioles, buds, and stem Does not have valvate buds Flowers profusely Outstanding fruits this year, but not always Questionable hardiness to the north Reaches about 10 at maturity

20 Viburnum farreri – Fragrant Viburnum Location: East side of Communications Building Opposite leaves are obovate with coarse serrations Terminal buds are large, have scales, and are not valvate Twigs and petioles may be reddish Flowers very early (April) and has red fruits in the fall Fruits usually drop early and leaves produce little fall color Reaches 14

21 Viburnum lantana – Wayfaringtree Viburnum Location: East of Lagomarcino Hall Large leathery leaves…not as long as V. xrhytidophylloides Obvious vegetative and flower (cauliflower-like) buds Flat-topped white flowers in spring, but some buds may open in fall Red fruits in the fall…not abundant this year Good semi-evergreen screen Flower Buds

22 Viburnum lentago – Nannyberry Viburnum Location: West side of Kildee Hall and west side of Horticulture Greenhouses Opposite leaves are larger than those on V. prunifolium Creamy white flowers in may and fruits that turn from green, to pink, to blue in fall Has valvate buds like V. prunifolium A native viburnum, but is inferior because of disease – particularly powdery mildew Has the potential for nice reddish/purple if not totally disfigured by mildew.

23 Viburnum xrhytidophylloides – Lantanaphyllum Viburnum Location: Southeast corner of General Services Bld. Large, coarse leaves, longer than those on V. lantana Produces white cymes of flowers in spring Big flower buds look like cauliflower Semi-evergreen Vegetative Buds

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