Shamrock Nursery Inc.

Ash 'Autumn Blaze'

Growth Rate:medium

Height/Spread (ft):55/25

Growth Form:oval

Plant Hardiness:excellent

Fall Color:good/purple

Aesthetic Value:common/average

Comments:good hardy ash with good fall color; light seed crop

Ash 'Fall Gold'

Growth Rate:medium

Height/Spread (ft):50/20

Growth Form:upright

Plant Hardiness:excellent

Fall Color:good/bright yellow

Aesthetic Value:common/average

Comments:retains fall color longer into fall than any other ash

Ash 'Golden Desert'

Growth Rate:slow

Height/Spread (ft):25/12

Growth Form:round

Plant Hardiness:good

Fall Color:good/bright gold

Aesthetic Value:attractive

Comments:golden bark all year with golden foliage in spring with preceding black buds; great small ornamental tree

Ash 'Northern Blaze'

Growth Rate:medium

Height/Spread (ft):50/25

Growth Form:oval

Plant Hardiness:good

Fall Color:good/purple

Aesthetic Value:common/average

Comments:first hardy ash with good fall color; seedless

Ash 'Mancana'

Growth Rate:medium

Height/Spread (ft):45/25

Growth Form:dense/oval

Plant Hardiness:excellent

Fall Color:good/yellow

Aesthetic Value:common/average

Comments:male;seedless selection

Ash 'Patmore'

Growth Rate:medium

Height/Spread (ft):45/25

Growth Form:dense/oval

Plant Hardiness:excellent

Fall Color:good/yellow

Aesthetic Value:common/average

Comments:male;seedless selection

Aspen 'Prarie Gold'

Growth Rate:fast

Height/Spread (ft):35-40/20-30

Growth Form:oval

Plant Hardiness:good

Fall Color:good/yellow

Aesthetic Value:common/average

Comments:shiny, dark leaves contrast against cream colored bark; silver catkins in spring; disease resistant

Aspen 'Quaking'

Growth Rate:medium

Height/Spread (ft):55/45

Growth Form:pyramidal

Plant Hardiness:good

Fall Color:excellent/pretty yellow

Aesthetic Value:attractive

Comments:small leaves with beautiful gray bark; unique tree that will add interest to the landscape; available in clumps

Bald Cypress

Height/Width (ft.):60/30

Exposure:full sun

Leaf Color:green delicate feathery leaves (conifer that loses its leaves in fall)

Comments:excellent conifer for streambanks or the edge of ponds; pyramidal form; foliage turns bright orange-brown in fall before dropping

Birch 'Cutleaf Weeping'

Growth Rate:fast

Height/Spread (ft):30/25

Growth Form:weeping

Plant Hardiness:good

Fall Color:good/yellow

Aesthetic Value:above average

Comments:pendulous branches with attractive dark green cutleaf foliage; bark is brown in youth maturing to grayish-white

Birch 'Heritage'

Growth Rate:fast

Height/Spread (ft):45/30

Growth Form:oval

Plant Hardiness:good

Fall Color:good/yellow

Aesthetic Value:above average

Comments:exfoliating bark is lighter than the 'river' birch; resistant to 'bronze birch borer'; available in clump forms

Birch 'Jacuemontii'

Growth Rate:fast

Height/Spread (ft):40/30

Growth Form:pyramidal

Plant Hardiness:good

Fall Color:good/yellow

Aesthetic Value:above average

Comments:white bark shows on birch at early age; shown resistance to 'bronze birch borer'

Birch 'Renaissance Reflection Paper'

Growth Rate:fast

Height/Spread (ft):60/25

Growth Form:pyramidal

Plant Hardiness:good

Fall Color:good/yellow

Aesthetic Value:above average

Comments:heat & birch borer resistant; attractive brilliant white exfoliating bark

Birch 'River'

Growth Rate:fast

Height/Spread (ft):30/40

Growth Form:oval

Plant Hardiness:good

Fall Color:good/yellow

Aesthetic Value:above average

Comments:cinnamon-colored exfoliating bark; shown resistance to 'bronze birch borer'; native tree also available in clumps

Birch 'Royal Frost'

Growth Rate:medium

Height/Spread (ft):30/15

Growth Form:loosely upright

Plant Hardiness:good

Fall Color:good/yellow to orange-red

Aesthetic Value:attractive

Comments:burgundy foliage from spring through summer on contrasting cinnamon to white bark; very unique tree

Birch 'Whitespire'

Growth Rate:medium-fast

Height/Spread (ft):40-5-/30-35

Growth Form:upright shape

Plant Hardiness:good

Fall Color:good/yellow

Aesthetic Value:above average

Comments:excellent landscape accent with its attractive white bark

Birch 'Youngs Weeping'

Growth Rate:medium

Height/Spread (ft):15/15

Growth Form:weeping

Plant Hardiness:good

Fall Color:good/yellow

Aesthetic Value:above average

Comments:pendulous branches with attractive white exfoliating bark

Buckeye 'Ohio'

Growth Rate:medium

Height/Spread (ft):25/25

Growth Form:round

Plant Hardiness:excellent

Fall Color:good/yellow-orange,red-brown

Aesthetic Value:common/average

Comments:unusual; attractive leaves have a wide range of fall color; brown fruit follows greenish-yellow flowers; adds diversity to your landscape

Catalpa

Growth Rate:medium-fast

Height/Spread (ft):50/30

Growth Form:upright oval

Plant Hardiness:good

Fall Color:good/yellow-green

Aesthetic Value:common/average

Comments:huge greenish-yellow leaves produce beautiful, fragrant white flowers; long bean-like seedpods

Coffeetree 'Kentucky'

Growth Rate:medium-slow

Height/Spread (ft):50/40

Growth Form:open spreading

Plant Hardiness:excellent

Fall Color:good/yellow

Aesthetic Value:common/average

Comments:deeply furrowed bark is attractive in winter; bluish-green foliage produces long, leathery seedpods

Cottonwood 'Nor'Easter'

Growth Rate:fast

Height/Spread (ft):65/35

Growth Form:round

Plant Hardiness:excellent

Fall Color:good/yellow

Aesthetic Value:common/average

Comments:very fast growing; sterile female with improved disease resistance; a Nebraska introduction

Cottonwood 'Siouxland'

Growth Rate:fast

Height/Spread (ft):40-50/25-30

Growth Form:irregular vase shape

Plant Hardiness:excellent

Fall Color:good/yellow

Aesthetic Value:common/average

Comments:very fast growing; rust resistant

Cottonwood 'Robusta'

Growth Rate:fast

Height/Spread (ft):50/35

Growth Form:broad oval

Plant Hardiness:excellent

Fall Color:good/yellow

Aesthetic Value:common/average

Comments:very fast growing

Elm 'Accolade'

Growth Rate:medium-fast

Height/Spread (ft):60/70

Growth Form:round spreading

Plant Hardiness:excellent

Fall Color:good/golden yellow

Aesthetic Value:common/average

Comments:similar to the American Elm; resistant to Dutch Elm Disease and Elm-leaf beetles

Elm 'Discovery'

Growth Rate:medium-fast

Height/Spread (ft):35-40/35-40

Growth Form:upright, vase shaped

Plant Hardiness:excellent

Fall Color:good/yellow

Aesthetic Value:common/average

Comments:resistant to Dutch Elm Disease and Elm-leaf beetles; good cold hardiness

Elm 'Homestead'

Growth Rate:medium-fast

Height/Spread (ft):60/35

Growth Form:conical shape

Plant Hardiness:excellent

Fall Color:good/yellow

Aesthetic Value:common/average

Comments:highly resistant to Dutch Elm Disease

Hackberry

Growth Rate:slow-medium

Height/Spread (ft):65/45

Growth Form:round spreading

Plant Hardiness:excellent

Fall Color:good/soft yellow

Aesthetic Value:common/average

Comments:tough, hardy, adaptable tree; bark is rough and corky; leaves will get nipple gall

Honeylocust 'Shademaster'

Growth Rate:slow-medium

Height/Spread (ft):55/35

Growth Form:round symmetrical

Plant Hardiness:excellent

Fall Color:good/yellowish-green

Aesthetic Value:common/average

Comments:thornless; essentially fruitless; good resistance to drought

Honeylocust 'Skyline'

Growth Rate:medium

Height/Spread (ft):50/30-35

Growth Form:broadly pyramidal

Plant Hardiness:good

Fall Color:good/golden yellow

Aesthetic Value:above average

Comments:thornless, seedless; great, ideal tree for light-filtering shade

Honeylocust 'Sunburst'

Growth Rate:medium

Height/Spread (ft):35/30

Growth Form:irregularly rounded

Plant Hardiness:good

Fall Color:good/golden yellow

Aesthetic Value:above average

Comments:foliage emerges bright-golden yellow and fades to green as it matures; thornless, seedless; great, ideal tree for light-filtering shade; stikingly beautiful in early spring

Linden 'American Sentry'

Growth Rate:medium

Height/Spread (ft):40/25

Growth Form:pyramidal

Plant Hardiness:excellent

Fall Color:good/yellow

Aesthetic Value:above average

Comments:distinctive bark is silvery-gray, especially when young and is very attractive; great shade tree for small spaces

Linden 'Boulevard'

Growth Rate:medium

Height/Spread (ft):60/30

Growth Form:pyramidal

Plant Hardiness:excellent

Fall Color:good/yellow

Aesthetic Value:above average

Comments:narrow, pyramidal growth habit; attractive specimen; ideal in sites where height is needed but width is limited

Linden 'Frontyard'

Growth Rate:medium

Height/Spread (ft):60/40

Growth Form:rounded

Plant Hardiness:excellent

Fall Color:good/yellow

Aesthetic Value:above average

Comments:selected for its excellent branching habit; broadly pyramidal when young and nicely rounded with age; dense foliage

Linden 'Greenspire'

Growth Rate:medium

Height/Spread (ft):45/32

Growth Form:oval

Plant Hardiness:excellent

Fall Color:good/yellow

Aesthetic Value:above average

Comments:veratile tree; 1998 Iowa tree of the year; more rounded in shape than 'shamrock' or 'redmond'

Linden Redmond'

Growth Rate:medium

Height/Spread (ft):50/32

Growth Form:pyramidal, uniform

Plant Hardiness:excellent

Fall Color:good/yellow

Aesthetic Value:above average

Comments:largest leaves of the lindens; dense foliage; very pyramidal shape; excellent shade tree; dormant buds are bright red

Linden 'Shamrock'

Growth Rate:medium

Height/Spread (ft):45/30

Growth Form:broad,conical

Plant Hardiness:excellent

Fall Color:good/yellow

Aesthetic Value:attractive

Comments:a terrific tree (our favorite!); compared to the 'greenspire,' the 'shamrock' has a more open canopy and larger leaves; has smaller leaves than 'redmond' or 'american' lindens; beautifully shaped tree

Locust (Robinia) 'Purple Robe'

Growth Rate:medium

Height/Spread (ft):40/25

Growth Form:ascending open

Plant Hardiness:good

Fall Color:good/yellow

Aesthetic Value:above average

Comments:beautiful globe locust has dark, rose-pink flowes in spring; unique attractive foliage; used more as an ornamental than a shade tree

Londonplane Tree 'BloodGood'

Growth Rate:fast

Height/Spread (ft):90/60-70

Growth Form:wide-spreading, rounded

Plant Hardiness:good

Fall Color:good/yellow

Aesthetic Value:above average

Comments:tolerates heat & drought; a rapid growing tree for parks, golf courses, and campuses; has beautiful, cream, olive, and brown exfoliating bark

Maple 'Autumn Blaze'

Growth Rate:fast

Height/Spread (ft):50/40

Growth Form:dense oval

Plant Hardiness:good

Fall Color:excellent/orange-red

Aesthetic Value:above average

Comments:one of the first hybrid maple crosses; outstanding tree; fast growing; hardy; great fall color

Maple 'Autumn Fantasy'

Growth Rate:fast

Height/Spread (ft):40/30

Growth Form:broadly oval

Plant Hardiness:good

Fall Color:excellent/ruby red

Aesthetic Value:above average

Comments:excellent shaped tree; slightly smaller than 'Autumn Blaze' Maple

Maple 'Celebration'

Growth Rate: medium-fast

Height/Spread (ft):45/20

Growth Form:compact, upright

Plant Hardiness:good

Fall Color:excellent, gold

Aesthetic Value:attractive

Comments:excellent hybrid maple with gold fall color; seedless

Maple 'Columnare'

Growth Rate:medium

Height/Spread (ft):50/18

Growth Form:narrow, columnar

Plant Hardiness:good

Fall Color:good/yellow

Aesthetic Value:attractive

Comments:most practical columnar tree; perfect for street use

Maple 'Crimson King'

Growth Rate:slow

Height/Spread (ft):35/35

Growth Form:oval

Plant Hardiness:good

Fall Color:non factor

Aesthetic Value:attractive

Comments:dense foliage remains excellent maroon-red color all season; spring flowers of maroon-yellow are an added bonus

Maple 'Deborah'

Growth Rate:fast

Height/Spread (ft):40-60/40-60

Growth Form:broadly oval

Plant Hardiness:good

Fall Color:good/bronze yellow

Aesthetic Value:attractive

Comments:brilliant red foliage turns to a dark bronze-green in summer; vigorous grower

Maple 'Emerald Lustre'

Growth Rate:medium-fast

Height/Spread (ft):55/50

Growth Form:rounded oval

Plant Hardiness:good

Fall Color:good/yellow

Aesthetic Value:above average

Comments:outstanding branching habit; hardy and vigorous grower; immature foliage displays an attractive red tinge before turning a glossy, deep green

Maple 'Emerald Queen'

Growth Rate:fast

Height/Spread (ft):50-60/40-45

Growth Form:upright, broadly oval

Plant Hardiness:good

Fall Color:good/bright yellow

Aesthetic Value:above average

Comments:ascending branches that give it its attractive shape; attractive glossy foliage

Maple 'Fall Fiesta'

Growth Rate:fast

Height/Spread (ft):60/50

Growth Form:upright, rounded

Plant Hardiness:good

Fall Color:excellent/ orange, red, yellow

Aesthetic Value:attractive

Comments:deep green, leathery leaves are resistant to leaf tatter; new sugar for our area!

Maple 'October Glory'

Growth Rate:medium

Height/Spread (ft):50-60/35-40

Growth Form:broad,oval

Plant Hardiness:good

Fall Color:good/crimson red

Aesthetic Value:attractive

Comments:fall color lasts much longer than other Red Maples; wings of samara display an attractive reddish tinge

Maple 'Paperbark'

Growth Rate:slow

Height/Spread (ft):20-30/10-15

Growth Form:upright oval

Plant Hardiness:good

Fall Color:good/varies every year

Aesthetic Value:attractive

Comments:rich red-brown exfoliating bark is beautiful all year long, especially in the winter against the snow

Maple 'Princeton Gold'

Growth Rate:medium

Height/Spread (ft):45/40

Growth Form:oval

Plant Hardiness:good

Fall Color:good/yellow

Aesthetic Value:attractive

Comments:foliage is a bright yellow, especially when young; holds color well during summer; stunning accent plant

Maple 'Red Sunset'

Growth Rate:medium

Height/Spread (ft):50/30-40

Growth Form:upright/dense

Plant Hardiness:good

Fall Color:good/brilliant red

Aesthetic Value:attractive

Comments:thick foliage and dense upright habit make this tree a great choice for street and lawn use

Maple 'Royal Red'

Growth Rate:medium

Height/Spread (ft):35/25

Growth Form:broadly oval

Plant Hardiness:tempermental

Fall Color:non-factor/brown

Aesthetic Value:attractive

Comments:striking tree with maroon red color all season; thought to be hardier than 'Crimson King' and 'Schwedler'; can be a difficult tree to grow; susceptible to sunscald and frost cracks; needs to be planted in a protected area, mulched heavily and tree-wrapped in winter months

Maple 'Ruby Frost'

Growth Rate:medium

Height/Spread (ft):45/40

Growth Form:upright,oval

Plant Hardiness:good

Fall Color:excellent/ red

Aesthetic Value:above average

Comments:red fall color maple that is selected for its cold hardiness; excellent drought resistance; excellent ruby-red fall color

Oak 'Burr'

Growth Rate:slow

Height/Spread (ft):65/55

Growth Form:rounded, open

Plant Hardiness:excellent

Fall Color:non-factor/yellow-brown to purple

Aesthetic Value:common/average

Comments:a native and hardy tree; very adaptable; attractive corky bark adds winter interest

Oak 'Northern Red'

Growth Rate:slow-medium

Height/Spread (ft):70/50

Growth Form:pyramidal in youth, rounded in maturity

Plant Hardiness:excellent

Fall Color:excellent/red to reddish brown

Aesthetic Value:attractive

Comments:the fastest growing oak; dense foliage; shiny leaves which hang on tree into winter; beautifully shaped tree with gorgeous fall color

Oak 'Pin'

Growth Rate:slow-medium

Height/Spread (ft):65/40

Growth Form:pyramidal

Plant Hardiness:excellent

Fall Color:excellent; bright bronze to red

Aesthetic Value:very attractive

Comments:a cadillac of a shade tree; not a fast grower; may need to feed iron supplements to optimize growth and deep green foliage; shiny leaves hang onto tree into winter; stunning fall color

Oak 'Regal Prince'

Growth Rate:fast

Height/Spread (ft):40-60/20-25

Growth Form:upright, columnar

Plant Hardiness:good

Fall Color:good/yellow-brown

Aesthetic Value:average

Comments:glossy dark green leaves with silver beneath

Oak 'Scarlet'

Growth Rate:medium

Height/Spread (ft):75-90/50-60

Growth Form:broadly pyramidal

Plant Hardiness:good

Fall Color:good/brilliant scarlet

Aesthetic Value:above average

Comments:foliage is lustrous & pinately lobed; similar to Pin Oak but with more of a globe shape; retains its red foliage into winter

Oak 'Swamp White'

Growth Rate:medium

Height/Spread (ft):55/45

Growth Form:narrow, rounded, open

Plant Hardiness:excellent

Fall Color:good/yellow-brown to red

Aesthetic Value:above average

Comments:great tree with a misleading name; does well in both wet and upland soils; dark green leaves with "felty" white undersides

Weeping Hornbeam

Growth Rate:medium

Height/Spread (ft):50/40

Growth Form:weeping

Plant Hardiness:good

Fall Color:good/yellow

Aesthetic Value:above average

Comments:graceful pendulous branches; bark has a muscle-like appearance; dark-green foliage