Shrub · Hydrangeaceae family
sweet mock orange
Philadelphus coronarius
In short a 10-second read
Sweet mock orange (shrub) grows to 3–3.6 m tall and 2.4–3.6 m wide when mature. It grows best in full sun to part shade, in average soil. It flowers in May–June; the flowers are white. Hardy to −34 °C.
× spread 2.4–3.6 m
Where to plant
Sun, soil, frost.
It grows best in full sun to part shade, in average soil. Hardy to −34 °C.
Sun
Tolerates several positions — choose to suit the rest of the garden.
Soil and water
average · watering: moderate
Soil: clay, humus-rich, loamy
Frost
It copes with a normal winter outdoors.
How much space it takes
Mature size.
The mature plant next to a person (175 cm).
Next to a person
Reaches maturity in about 5–10 years. The final size depends on the cultivar and the spot — we give the range from smallest to largest.
Calendar
What to do and when.
Months for Central Europe. The line shows the current month.
The year at a glance
Flowers
May–June · white
Pruning
prune after flowering (June–July)
Planting
container plant: October–April
Winter protection
not needed
Overwintering
It copes with winter on its own.
It overwinters outdoors without protection, hardy to −34 °C.
- Needs no protection
- Hardy to −34 °C
- Deciduous — bare in winter
What to combine it with
Same needs, different flowering.
They share the same sun and soil and flower in other months — so the bed flowers for longer.
Frequently asked
Quick answers.
When does sweet mock orange flower?
In May–June; the flowers are white.
Does sweet mock orange tolerate shade?
It tolerates part shade (3–6 hours of sun), but not full shade.
How much space does sweet mock orange need?
At maturity 2.4–3.6 m wide and 3–3.6 m tall; recommended spacing 300 cm.
Does sweet mock orange survive winter outdoors?
Yes, without protection, hardy to −34 °C.
Where the data comes from
The data is indicative — we are still comparing it with further sources. Last checked 17 October 2026.
Show sources (13)
- NC State Extension Gardener Plant Toolbox — Philadelphus coronarius
- Missouri Botanical Garden Plant Finder — Philadelphus coronarius 'Romanizam' ROMANTIC KNIGHT — ⚠️ stránka KULTIVARU
- BfN (Bundesamt für Naturschutz) — Naturschutzfachliche Invasivitätsbewertung
- GBIF Occurrence Search API — Philadelphus coronarius
- Wikidata (CC0) — Philadelphus coronarius
- RHS - Philadelphus coronarius
- RHS - Mulches and mulching
- RHS - Shrubs: pruning early-flowering
- RHS - Trees and shrubs: planting
- Clemson HGIC - Planting Trees Correctly
- Invasive plant lists — this species is not on them: EU, Slovakia, EASIN
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