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| Plant Expert: |
Michael Dirr
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| Hypericum calycinum |
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Origin:
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southeastern Europe, Asia Minor
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Partial/Full sun.
Moderate climate.
Dirr says: "does best in poor sandy soil"
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Climate / Hardiness Zones:
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Zone 5 to Zone 8
Dirr says: "The tops of the plant often winter-kill in severe cold but since it flowers on new wood little damage is done."
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Growth:
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Range: Grows to 3'.
Dirr says: "quite stoloniferous and can prove invasive under proper cultural conditions. Makes a handsome groundcover plant as it grows fast and effectively covers an area in a short time. 12 to 18" high and spreading 18 to 24"."
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Flowers:
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Color(s): Yellow
Season(s):
Summer, Fall
Dirr says: "screaming bright yellow, 3" across, borne singly or rarely 2 to 3 together on new wood in June through September. Best mowed to the ground to induce new growth each spring. Has become common in the Southeast but seldom flowers like I have seen it in the Pacific Northwest and Europe."
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Foliage:
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Semi-Evergreen
Color:
Leaves are bluish-green in the summer.
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Fruit:
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Color:
Black
Season(s):
Fall
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Landscape Value:
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Can be used as a foundation plant.
Can be used as a grouping plant.
Dirr says: "over the past 19 years has become common in the Southeast but seldom flowers like I have seen it in the Pacific Northwest and Europe."
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Hypericum calycinum is hardy in these areas:| Alsip, IL | Baltimore, MD | Bayside, NY | | Bronx, NY | Brooklyn, NY | Brownsville, TX | | Canton, MI | Chicago, IL | Cicero, IL | | College Point, NY | Conneaut, OH | Corona, NY | | Detroit, MI | Dorset, OH | East Claridon, OH | | East Elmhurst, NY | East Greenville, PA | East Texas, PA | | Easton, PA | Ecorse, MI | Elmhurst, NY | | Elmwood Park, IL | Elyria, OH | Emmaus, PA | | Evergreen Park, IL | Ferndale, MI | Florence, SC | | Flushing, NY | Forest Hills, NY | Fort Eustis, VA | | Fresh Meadows, NY | Glen Burnie, MD | Gwynn Oak, MD | | Harper Woods, MI | Harrison Township, MI | Highland Park, MI | | Hunt Valley, MD | Jackson Heights, NY | Leasburg, NC | | Lexington, NC | Liberty, NC | Linwood, NC | | Little Neck, NY | Macomb, MI | Marysville, MI | | Maspeth, NY | Memphis, MI | Middle Village, NY | | Morgantown, WV | Mount Clemens, MI | New Baltimore, MI | | New Haven, MI | New York, NY | Newport News, VA | | North Ridgeville, OH | North Street, MI | Nottingham, MD | | Oakland Gardens, NY | Parkville, MD | Philadelphia, PA | | Pikesville, MD | Rego Park, NY | Ridgewood, NY | | Riverdale, IL | Rosedale, MD | Sparrows Point, MD | | Staten Island, NY | Taylor, MI | Temperance, MI | | Towson, MD | Trenton, MI | Virginia Beach, VA | | Wayne, MI | Westland, MI | Whitestone, NY | | Whitmore Lake, MI | Woodside, NY |
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