HRT 212 Lecture Notes - Lecture 1: Crataegus Laevigata, Crataegus, Japanese Beetle
SHRUBS 1
1. Crataegus crus-galli, Cockspur Hawthorn (SHRUB)
● Zone 4-6
● 20 feet
● Broad wide spreading large shrub
● Dense low branching
● Medium growth rate
● Glossy dark green leaves, purple-red fall color
● White flowers in May
● Red fruit persists into fall
● 2-3” thorns
○ ‘Inermis’ -thornless
○ Crusader- thornless cultivar in the industry
● Tiny tiny red buds
2. Crataegus laevigata, English Hawthorn (TREE)
● Zone 4-7
● 20 ft
● Wide spreading rounded crown
● Medium growth rate
● Dark green, lobed leaves
● White flowers, but most cultivars have been selected for pink-red flowers in May
● Small red fruit
● Short thorns, less than an inch
● Soils: adaptable to various
● Site tolerance: broad or wide spread adaptability, environment and soil
conditions, will fit in because it has tolerance to diversity
○ Crimson Cloud
○ Paul’s Scarlet
3. Crataegus phaenopyrum, Washington Hawthorn (TREE)
● Zone 4-8
● 25 ft
● Widespread, broad oval crown
● Medium growth rate
● Dark green leaves
● White flowers in may
● Small clusters of red fruit
● 2-3” thorns
● Soils: adaptable to various soils
● Pests: rust, fireblight
● Uses: street tree, accent
Malus spp. Crabapples (Separate matching) form, flower, fruit, resistance to scab
● Trees or large shrubs
● Habit: low mound, spreading; broad spreading; upright, columnar, weeping
● Foliage: medium green, obovate, fall color with yellow or non-significant
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● Flowers: white, pink, rose, red, flower buds may be one color opening to a different color
pink in bud, flowering white
● Fruit: red, yellow, orange, ranging in size up to 2” if fruits are larger than 2” it is classified
as an apple
● Soils: adaptable full sun
● Breeders are interested in resistance or tolerance to 3 major diseases: Apple
Scab, Cedar apple rust (jelly like horns), Fire Blight FILL IN THE BLANK
QUESTION
● Many insects: japanese beetle
‘Adams’
● Upright crown, carmine flowers; bright red fruit
● Very resistant
‘Beverly’
● Upright rounded crown; white flowers; bright red fruit, carmine flowers
● Resistant to scab
‘Radiant’
● Compact rounded crown, deep pink flowers, red fruit, Highly susceptible to scab
‘Royalty’
● PURPLE FOLIAGE, upright rounded crown, red flowers, dark red purple fruit
Malus floribunda
● Broad rounded crown, pink flowers, red fruit, slightly susceptible to scab
‘Prairiefire’
● Rounded crown, deep pink flowers, dark red fruit, very resistant to diseases
● One of the industries strong points
● MUST KNOW
‘Snowdrift’’
● Broad rounded crown, white flowers; red fruit,
● Moderately susceptible
‘Sugar Tyme’
● Upright oval crown; pink flower, bright red fruit MSU intro
● Very resistant to disease
Malus x Zumi (maybe not important)
Sargentii (know this)
● Low grounding mounded form; white flowers, red fruit
● Slightly susceptible to leaf scab
Malus ‘Adirondack’
● Columnar habit
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Golden Raindrops
● Broad slender crown; pink in bud; white flowers; golden yellow fruit
● Excellent resistance
Louisa
● Broad spreading weeping, pink in bud, opening pink
● WEEPER
Molten Lava
● Wide spreading weeping, deep red in bud
● Opening white bright red fruit
● Resistant to diseases and Japanese beetle
Malus ‘Red Jade’
● Weeping, pink in bud, opening white,
● Bright red fruit
● Moderately susceptible to scab
● CLASSIC WEEPER
4. Hamamelis x intermedia, Hybrid Witchhazel
● Upright vase shape
● Medium green leaves yellow-red fall color
● Fine strap-like flowers, color vary with cultivar in late winter
● Fruit is a brown capsule
● Use: accent
○ ‘Arnold Promise’
○ ‘Jelena’
○ ‘Diane’
5. Hamamelis vernalis, Vernal Witchhazel
● Upright broad rounded habit
● Dark green in summer, yellow fall color
● Orange strap-like flowers in late winter
● MICHIGAN NATIVE
6. Hamamelis virginiana, Common Witchhazel
● Wide spreading irregular habit
● Small tree or large shrub
● Medium green leaves, yellow fall color
● MICHIGAN NATIVE
● Yellow strap-like flowers in September/October
● Brown capsules
● Full sun or partial shade
7. Corylopsis spicata, Winterhazel
● Wide spreading shrub
● Medium green leaves, yellow fall color
● Yellow cascading flowers in spring
● Full sun or partial shade
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find more resources at oneclass.com
Document Summary
Shrubs 1: crataegus crus-galli, cockspur hawthorn (shrub) Glossy dark green leaves, purple-red fall color. Tiny tiny red buds: crataegus laevigata, english hawthorn (tree) White flowers, but most cultivars have been selected for pink-red flowers in may. Site tolerance: broad or wide spread adaptability, environment and soil conditions, will fit in because it has tolerance to diversity. Paul"s scarlet: crataegus phaenopyrum, washington hawthorn (tree) Crabapples (separate matching) form, flower, fruit, resistance to scab. Habit: low mound, spreading; broad spreading; upright, columnar, weeping. Foliage: medium green, obovate, fall color with yellow or non-significant. Flowers: white, pink, rose, red, flower buds may be one color opening to a different color pink in bud, flowering white. Fruit: red, yellow, orange, ranging in size up to 2 if fruits are larger than 2 it is classified as an apple. Breeders are interested in resistance or tolerance to 3 major diseases: apple. Scab, cedar apple rust (jelly like horns), fire blight fill in the blank.
