Mark A. Miller
Family
Fagaceae
Botanical Name
QUERCUS 'Clemons'(HERITAGE®) PP11431
Plant Common Name
Clemons Hybrid Oak, Heritage® Oak, Hybrid Oak
Special Notice
This entry has yet to be reviewed and approved by L2G editors.
General Description
With excellent cold hardiness, resistance to powdery mildew and breakage from wind and ice, the Heritage® oak is a shade tree of outstanding growth and character! A hybrid deciduous tree named 'Clemons', it was selected as a seedling from a cross between (Quercus robur) and burr oak (Quercus macrocarpa) found growing in Illinois in 1974. It is sometimes referred to as Quercus mcdanielsii, honoring a late oak hybrid-specialist. This oak also grows from a strong and straight central leader, unlike many young oaks, and also tolerates the huge temperature swings (warm to subfrezzing in hours) often encountered in the American Midwest.
Attaining a rounded canopy with a pyramid-like top, this oak has lustrous dark green leaves with matted lighter gray undersides. Each leaf has five to seven pairs of rounded lobes. Flowering in oaks occurs in spring as new leaves emerge. They are non-showy and occur as drooping male catkins or tiny reddish female flowers on the twigs. Acorns ensue, ripening by fall. The fall foliage color is rather mundane, at best gaining yellow-green hues. In winter the upward-angled branch structure can be admired.
Grow Heritage® in full sun in a fertile, moist but well-drained soil, acidic to alkaline in pH. Tolerant of heat, drought, wind and bitter winter cold, its leaves do not tatter and are resisitant to powdery mildew. Use it as a tough shade tree for landscapes with room, such as parks, large lawns, campuses, cemeteries or golf courses. In good growing conditions this selection is much faster growing than oaks usually are known.
Characteristics
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AHS Heat Zone
8 - 1
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USDA Hardiness Zone
4 - 8
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Sunset Zone
A2, A3, 1a, 1b, 2a, 2b, 3a, 3b, 4, 5, 6, 7, 8, 9, 14, 15, 16, 17, 18, 19, 20, 21, 22
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Plant Type
Tree
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Sun Exposure
Full Sun, Partial Sun
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Height
40'-60' / 12.2m - 18.3m
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Width
35'-50' / 10.7m - 15.2m
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Bloom Time
Spring
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Native To
Hybrid Origin
Growing Conditions
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Soil pH
Acidic, Neutral, Alkaline
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Soil Drainage
Average
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Soil type
Clay, Loam, Sand
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Tolerances
Drought
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Growth Rate
Medium
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Water Requirements
Drought Tolerant, Average Water
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Habit
Pyramidal
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Seasonal Interest
Spring, Summer, Fall
Ornamental Features
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Flower Interest
Insignificant
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Flower Color
Yellow Green
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Fruit Color
Chocolate
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Foliage Color (Spring)
Green, Dark Green
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Foliage Color (Summer)
Dark Green
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Foliage Color (Fall)
Yellow Green, Tan
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Bark Color
Brown
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Fragrant Flowers
No
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Fragrant Fruit
No
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Fragrant Foliage
No
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Bark or Stem Fragrant
No
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Repeat Bloomer
No
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Showy Fruit
Yes
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Edible Fruit
No
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Showy Foliage
Yes
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Foliage Texture
Medium
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Foliage Sheen
Glossy
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Evergreen
No
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Showy Bark
No
