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Sweet mock-orange

Sweet mock-orange

Philadelphus coronarius
A large, vigorous, multi-stemmed deciduous shrub grown above all for its intensely fragrant pure-white flowers, which open in cupped clusters in late spring to early summer and carry a rich scent very like orange blossom. Native to southeastern Europe and the Caucasus region (not North America), it forms an arching, dense, oval mound 10 to 12 feet tall and is one of the most reliable old-fashioned fragrance shrubs for full sun to part shade - easy, cold-hardy, and undemanding once established, though its display is a single, glorious, several-week burst rather than a long season.
Climate fit: narrow (39/100)
Structure
Border
Pollinator
Light
Full sun / Part shade
Water
Moderate water
Mature size
10-12 ft tall · 5.5 ft apart
Hardy in zones
4a-8b
very cold to frosty winters
Native in Illinois
No

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Bees work the open, accessible blooms heavily for nectar and pollen during the late-spring flush, making the shrub a strong if short-lived pollinator draw.

Cold hardiness

These values are location-based: this location's current hardiness is the baseline, and the 2050 value is a projected future climate for this same location.
Now
Zone 6b
Plotwright
USDA Zone 6b
-5°F to 0°F
Well-suited
Zone 7a
Plotwright
0°F to 5°F
Well-suited
In plain terms: This location has cold winters. Its winters are projected to keep warming through 2050.
Well-suited today and still thriving in 2050.

Heat tolerance

Heat tolerance values are location-based too: heat days today are observed at this site, and the 2050 value projects this same location under a future climate.
Loading AHS heat-zone data for this location...

Similar plants

Browse lateral options with similar roles, light needs, size, or native-range overlap; these are not filtered for a better climate fit.
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Structure
Border
Pollinator
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Full sun / Part shade
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Structure
Pollinator

Educator packet

Plant packet
Sweet mock-orange educator packet
A large, vigorous, multi-stemmed deciduous shrub grown above all for its intensely fragrant pure-white flowers, which open in cupped clusters in late spring to early summer and carry a rich scent very like orange blossom. Native to southeastern Europe and the Caucasus region (not North America), it forms an arching, dense, oval mound 10 to 12 feet tall and is one of the most reliable old-fashioned fragrance shrubs for full sun to part shade - easy, cold-hardy, and undemanding once established, though its display is a single, glorious, several-week burst rather than a long season.
Scientific name
Philadelphus coronarius
Plant type
shrub
Hardiness
4a-8b
Light
full-sun, part-shade
Moisture
moderate
Spacing
66 inches
Classroom prompts
- Which plant traits are observations, and which are care recommendations?
- How would this plant fit change if the garden location moved warmer, colder, wetter, or drier?
- Which source-backed facts would you cite in a lesson handout?
Use the Sources & citations section below for page citation styles and the field-level source list.

Sources & citations

Cite this page
For lesson plans, articles, or research that uses this page. Use the source cards below to explore the references that informed this record.
Plotwright. (2026, May 17). Sweet mock-orange (Philadelphus coronarius). Retrieved 2026, August 20, from https://plotwright.com/plants/philadelphus-coronarius
Sources used for this record
This record is compiled from the sources below.
Plants of the World Online (POWO)
Botanical research database
NC State Extension Gardener Plant Toolbox
University extension service
RHS Find a Plant
Botanical research database
GBIF
Botanical research database
Wikimedia Commons
Photo · Public domain.