Guelder rose vs Mock orange

Guelder rose and Mock orange are often considered for the same spot in the garden (flowers, hedge, screening, pollinator friendly). The data below shows where they differ: size, hardiness, care, toxicity and price.

Guelder rose

Viburnum opulus 3 m × 2.5 m after 10 years

A fast-growing, large native shrub with lobed, maple-like leaves, flat white lacecap flowers in May and June, red autumn foliage and glossy red…

Shrub

Full sun

Part shade

from about PLN 18

Mock orange

Philadelphus coronarius 2.5 m × 2 m after 10 years

A large, upright then arching deciduous shrub grown for its white, intensely sweet-scented flowers in late May and June: plant it near a patio or seat…

Shrub

Full sun

Part shade

from about PLN 23

Key differences

Mock orange tolerates drought better than Guelder rose.
Mock orange needs less water than Guelder rose.
Mock orange needs less care than Guelder rose.

Which one to choose?

Mock orange is the better choice if you cannot water regularly or you have little time for care.

Watch out for

Guelder rose

Viburnum leaf beetle larvae in late spring and the adult beetles in late summer chew the leaves to lace, and guelder rose is among the most susceptible species: repeated defoliation year after year weakens the shrub and in bad cases can kill it. In winter cut off and destroy shoot tips showing rows of small capped egg pits, and pick off larvae in spring. Black aphids regularly curl the shoot tips. In the hot, dry summers of Central Europe the foliage scorches and drops early without watering.

Mock orange

Black aphids often crowd the shoot tips in spring and early summer, curling the leaves and leaving the shoots sticky; it looks bad but rarely weakens the shrub seriously. Powdery mildew, leaf spot, rust and canker also occur. Cutting it back in autumn or spring removes the next year's flowers. Left unpruned it becomes bare at the base and outgrows its place: take out some of the oldest stems at ground level after flowering. It needs watering in prolonged summer drought.

The data side by side

Feature	Guelder rose	Mock orange
Group	Shrub	Shrub
Size after 10 years	3 m × 2.5 m	2.5 m × 2 m (uncertain)
Ultimate size	3–5 m × 2.5–4.5 m	3–4 m × 2.5–4 m
Growth rate	Fast (uncertain)	Fast
Light	Full sun, Part shade	Full sun, Part shade
Soil	Average garden soil, Clay, Sandy, Calcareous, Acidic	Average garden soil, Clay, Calcareous
Hardiness	down to -40 °C (USDA 3, RHS H7)	down to -34 °C (USDA 4, RHS H7)
Heat tolerance	no data	Medium (uncertain)
Foliage	Deciduous	Deciduous
Flowering	May–June, white	May–June, white
Water need	High	Medium
Drought tolerance	Low	Medium
Maintenance	Medium	Low
Planting distance	200 cm	150 cm
For dogs	no data	Non-toxic (uncertain)
For cats	no data	Non-toxic (uncertain)
For children	Mildly toxic	Non-toxic (uncertain)
Typical price	approx. PLN 19	approx. PLN 23

Prices are rounded, indicative values. Toxicity data is for information only. If your pet or child has eaten a plant, contact a vet or a doctor. Data updated: October 26, 2026

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