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Philadelphus x lemoinei

Phonetic Spelling
fil-a-DEL-fus le-MOI-nee-i
Description

Lemoine mock orange is a hybrid cross between P. coronarius x P. microphyllus. It is a deciduous shrub with an upright, arching habit, growing 4-8 feet tall and equally wide. The white-petaled flowers are amazingly fragrant and occur in terminal racemes of 3 to 7 blooms. Each bloom is saucer-shaped and measures up to 1.5 inches in diameter. The leaves are medium to dark green, narrowly oval, and have pointed tips. This shrub belongs to the hydrangea family (Hydrangeaceae). The genus name Philadelphus is Greek and means "loving one's brother or sister." The specific epithet lemoinei honors the plant breeder, Victor Lemoine, who developed this hybrid in 1883-1884 in Nancy, France.

This shrub prefers moist, well-drained soils in sun to partial shade. It adapts to most soil types, but it is intolerant of poorly drained soils. Prune after flowering to control the shrub size. If the shrub becomes scraggly or unruly, cut it back to the ground to foster rejuvenation.

To enjoy the Lemoine mock orange's sweet fragrance, consider planting near an entrance or as a foundation planting, hedge, border, or in a woodland setting.

Insects, Diseases, and Other Plant Problems:  Monitor for aphids, nematodes, and leaf miners. Can be susceptible to leaf spot, powdery mildew, canker, and rust. It has no serious insect or disease problems.

See this plant in the following landscape :
Cultivars / Varieties:
  • 'Avalanche'
    Shrub grows 4-5 ft. tall, 5-10 ft. wide, with racemes of 5 to 7 fragrant, white flowers
  • ‘Belle Etoile’
    Shrub grows 6-8 ft. tall and 6 ft. wide, with white, 4-petaled flowers with a maroon-tinged base
  • 'Innocence'
    Grows 5-10 ft. tall and 4-10 ft. wide, with variegated foliage of gold, green, and white and white blooms
  • 'Manteau d'Hermine'
    Grows 3-4 ft. tall, with fragrant, double flowers
  • 'Mrs. E. L. Robinson'
    Shrub grows 5-6 ft. tall and 5 ft. wide, with fragrant, semi-double white blooms and yellow stamens
  • 'Silver Showers'
    Shrub grows 3-4 ft. tall and 4-5 ft. wide, with a rounded habit and large, flat, scented white flowers
'Avalanche', ‘Belle Etoile’, 'Innocence', 'Manteau d'Hermine', 'Mrs. E. L. Robinson', 'Silver Showers'
Tags:
#deciduous#easy to grow#summer flowers#shrub#arching#fragrant flowers#full sun tolerant#partial shade tolerant#shrub border#bat friendly#moth friendly#border#butterfly friendly#clay soils tolerant#drought tolerant#foundation planting#wet soils intolerant#white flowers#woodland garden
 
Cultivars / Varieties:
  • 'Avalanche'
    Shrub grows 4-5 ft. tall, 5-10 ft. wide, with racemes of 5 to 7 fragrant, white flowers
  • ‘Belle Etoile’
    Shrub grows 6-8 ft. tall and 6 ft. wide, with white, 4-petaled flowers with a maroon-tinged base
  • 'Innocence'
    Grows 5-10 ft. tall and 4-10 ft. wide, with variegated foliage of gold, green, and white and white blooms
  • 'Manteau d'Hermine'
    Grows 3-4 ft. tall, with fragrant, double flowers
  • 'Mrs. E. L. Robinson'
    Shrub grows 5-6 ft. tall and 5 ft. wide, with fragrant, semi-double white blooms and yellow stamens
  • 'Silver Showers'
    Shrub grows 3-4 ft. tall and 4-5 ft. wide, with a rounded habit and large, flat, scented white flowers
'Avalanche', ‘Belle Etoile’, 'Innocence', 'Manteau d'Hermine', 'Mrs. E. L. Robinson', 'Silver Showers'
Tags:
#deciduous#easy to grow#summer flowers#shrub#arching#fragrant flowers#full sun tolerant#partial shade tolerant#shrub border#bat friendly#moth friendly#border#butterfly friendly#clay soils tolerant#drought tolerant#foundation planting#wet soils intolerant#white flowers#woodland garden
  • Attributes:
    Genus:
    Philadelphus
    Family:
    Hydrangeaceae
    Life Cycle:
    Woody
    Country Or Region Of Origin:
    Europe
    Wildlife Value:
    The blooms attract butterflies.
    Play Value:
    Attractive Flowers
    Attracts Pollinators
    Fragrance
    Screening
    Dimensions:
    Height: 4 ft. 0 in. - 8 ft. 0 in.
    Width: 4 ft. 0 in. - 8 ft. 0 in.
  • Whole Plant Traits:
    Plant Type:
    Shrub
    Woody Plant Leaf Characteristics:
    Deciduous
    Habit/Form:
    Arching
    Mounding
    Growth Rate:
    Medium
    Maintenance:
    Low
    Texture:
    Medium
  • Cultural Conditions:
    Light:
    Full sun (6 or more hours of direct sunlight a day)
    Partial Shade (Direct sunlight only part of the day, 2-6 hours)
    Soil Texture:
    Clay
    Loam (Silt)
    Sand
    Soil pH:
    Acid (<6.0)
    Alkaline (>8.0)
    Neutral (6.0-8.0)
    Soil Drainage:
    Good Drainage
    Moist
    Available Space To Plant:
    3 feet-6 feet
    6-feet-12 feet
    NC Region:
    Coastal
    Mountains
    Piedmont
    USDA Plant Hardiness Zone:
    5a, 5b, 6a, 6b, 7a, 7b, 8a, 8b
  • Flowers:
    Flower Color:
    White
    Flower Inflorescence:
    Raceme
    Flower Value To Gardener:
    Fragrant
    Showy
    Flower Bloom Time:
    Summer
    Flower Shape:
    Cup
    Flower Size:
    1-3 inches
    Flower Description:
    The flowers are fragrant, white-petaled, and measure 1- 1.5 inches in diameter. Three to seven blooms are borne on terminal racemes. Blooming occurs from May to June.
  • Leaves:
    Woody Plant Leaf Characteristics:
    Deciduous
    Leaf Color:
    Green
    Leaf Feel:
    Soft
    Leaf Type:
    Simple
    Leaf Arrangement:
    Opposite
    Leaf Shape:
    Elliptical
    Ovate
    Leaf Margin:
    Dentate
    Hairs Present:
    Yes
    Leaf Length:
    1-3 inches
    Leaf Width:
    < 1 inch
    Leaf Description:
    The leaves are medium to dark green, narrowly oval, and have pointed tips. The upper surface is smooth, and the underside is hairy. Each leaf measures up to 2 inches long. The margins are sparingly toothed.
  • Stem:
    Stem Is Aromatic:
    No
  • Landscape:
    Landscape Location:
    Lawn
    Woodland
    Landscape Theme:
    Children's Garden
    Rain Garden
    Design Feature:
    Border
    Foundation Planting
    Hedge
    Mass Planting
    Screen/Privacy
    Attracts:
    Butterflies
    Resistance To Challenges:
    Drought