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SAMPLE EXAM FOR H&CS 234

NOTE: these are sample questions only and include species and cultivars, as well as topics, not covered during the first 3 weeks of the Spring 97 class.

1)Matching (use each letter only once while choosing the best answer; 22 points):

Betula nigra	A. Perennial with fine-textured evergreen foliage
Buxus	B. "Southwestern" type of radiating appearance
Euonymus alata	C. Evergreen shrub often sheared for formal gardens
Ginkgo biloba	D. Rapidly growing shade tree for wet or dry sites
Iberis sempervirens	E. Suckers, watersprouts, variable growth habits
Ligustrum obtusifolium	F. Foliage and flowers often pungent if bruised
Liriope spicata	G. Deciduous hedge with poor fall color
Lobelia erinus	H. Prized for its flaming red fall foliage
Malus	I. Shade tree often with an irregular growth habit
Tagetes patula	J. Annual used as a low edging plant
Yucca filamentosa	K. Groundcover with a turf-like appearance

2) Multiple Choice (circle the number of the best answer; 16 points):

A.Which of the following perennials is best placed in full sun for best performance?

1. Galium odoratum
2. Hosta
3. Pulmonaria saccharata
4. Sedum `Autumn Joy'

B. Which of the following does not have a variegated cultivar?

1. Ajuga reptans
2. Dryopteris erythrosora
3. Euonymus fortunei
4. Yucca filamentosa

C.All of the following have strong floral displays; however, only one flowers after the foliage has emerged and is fully expanded. It is:

1. Cercis canadensis
2. Forsythia x intermedia
3. Koelreuteria paniculata
4 Magnolia x soulangiana

D.Bronzing is a positive winter attribute of foliage of some evergreen plants. Which one of the following does not bronze during winter?

1. Ajuga reptans `Bronze Beauty'
2. Euonymus fortunei `Colorata'
3. Rhododendron `PJM Rhododendron'
4. Vinca minor `Bowles'

E.Early floral display is often cited as a quality attribute for some plants. Which of the following woody plants does not ever have its flowers damaged by frosts or freezes, because it flowers later in the season?

1. Forsythia x intermedia
2. Forsythia suspensa sieboldii
3. Magnolia x soulangiana
4. Magnolia virginiana

F.Which of the following is not noted for its salt spray tolerance?

1.Buxus
2.Hemerocallis
3. Lonicera xylosteum
4. Myrica pensylvanica

G.Which of the following is not considered to have ornamental fruits?

1.Alnus glutinosa
2.Ilex glabra (female form)
3. Myrica pensylvanica (female form)
4. Pyracantha coccinea

H.What is the first criterion that virtually all new Crabapple introductions must have before they are released as modern cultivars?

1. disease and pest resistance
2.good fall foliage color
3.ornamental bark
4. winter-persistent fruits

3)Write T for True or F for False for the following statements (20 points):

• Sweetbay Magnolia has bicolored foliage that is attractive in summer breezes as the foliage flutters.
• Annuals are accent plants that provide splashes of summer floral or foliage color to such areas as borders, beds, entranceways, foundations, and window boxes, then die in the autumn as frosts and freezes occur.
• Pachysandra, English Ivy, and Purple Wintercreeper are groundcovers that perform well in full sun.
• Growth habit is a combination of stem growth orientation plus overall growth shape.
• Myrtle, Yucca, and Liriope have foliage that is fine-textured.
• Azaleas usually have ten stamens per flower and True Rhododendrons usually have five stamens per flower.
• A barrier hedge is a row planting of thorny or non-thorny shrubs that effectively prohibits movement of humans or dogs through it.
• Reclamation plantings are often sited at a woodland edge or at the perimeter of a property, whereas naturalized plantings are sited in a previously disturbed open field, roadway, or wasteland area.
• Widely vase-shaped trees may eventually become horizontal and/or layered in their branching appearance.
• Upright oval trees that are very narrow may also be termed columnar trees, irregardless of whether they are deciduous or evergreen.

4)Provide short answers to the following questions (4 points)

List two of the objectives of Horticulture 234, "Landscape Plants", as noted in the course syllabus.

(1)

(2)

For the remainder of the exam, if you give more answers than what is required in italics, the responses will be graded in order of appearance up to the number of answers which are required.

5)Briefly state one actual or potential asset and one actual or potential liability of the following plants as used in Columbus, Ohio (give both assets and liabilities for only four out of the seven plants; 16 points):

Ajuga reptans

Artemisia schmidtiana`Silver Mound'

Betula papyrifera

Galium odoratum

Ilex x meserveae

Kerria japonica

For the remainder of the exam, underline when writing a Genus, specific epithet, and/or variety, use single quotes for `Cultivars', use a small x for hybrids, capitalize the Genus and Cultivars, and spell correctly (-0.5 points for every unit incorrect in these fashions). Please print legibly.

6)Identify by scientific name a single plant for the following requirements (there are at least two correct answers for each question; write only one; only answer four out of six questions; 8 points):

a)A shrub or tree with showy late winter or early spring inflorescences

b)A perennial, shrub, or tree with purple foliage

c)A shrub or tree with a weeping or pendulous habit

d)A shrub that requires acid soil for best performance

e)A shrub or tree with ornamental bark that is not gray

f)A spring-flowering major bulb

7) List 5 abiotic stresses that typically affect plants in the landscape.

8) List 3 species with excurrent growth habit and 3 with decurrent growth habit.

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