4 named cultivars

shrub

Mockorange

The Story

Plant Bio

Philadelphus coronarius, sweet mock orange, is an upright arching deciduous shrub from northeastern Turkey and the Caucasus, reaching ten to twelve feet tall and eight to ten across. Cup-shaped four-petalled white flowers an inch or more wide open in short racemes in late spring, carrying an intense orange-blossom scent.

The scent is the whole point — among the strongest of any hardy shrub — so site it near a door or a window that opens rather than at the back of a border. It flowers on wood made the previous year, so prune within a few weeks of the flowers fading; a late-winter tidy removes exactly the growth that would have bloomed.

Uses & Benefits:

A short but heavy flush of pure white flowers in late spring on an arching, informal frame.

Tough, cold-hardy and long-lived, and useful as an informal screen once it reaches full size.

Bees work the open flowers freely, and the dense arching growth gives good nesting cover for small birds.

Essentials

At a Glance

Plant Type

Shrub

Height

132 inches

Width

108 inches

Light

Full Sun, Partial Sun

Zones

4, 5, 6, 7, 8

Water

Moderate

Humidity

Moderate

Lifespan

Perennial

Native To

Northeastern Turkey and the Caucasus

Toxicity

Non-toxic

Planting

How to Grow

Plant in full sun or light shade in well-drained soil.
Allow eight to ten feet of width at maturity.
Water through the first two summers, then rarely.
Prune immediately after flowering, never later.
Cut a third of the oldest stems to the base each year.
Set later perennials in front to cover the plain summer foliage.

Pro Tip

Renewal pruning beats shearing: take a third of the oldest stems out at ground level each year and it never becomes a bare-legged thicket.

Keep It Thriving

Care Guide

Do

Prune within weeks of the flowers fading ✂️
Remove a third of the oldest stems yearly 🪵
Plant it where the scent will be noticed 👃
Give it room to arch naturally 📏

Don't

Prune in late winter — you cut off the flowers ❌
Shear it into a formal ball ❌
Squeeze it into a five-foot gap ❌

Seasonal Care Calendar

Task	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Mulch
Prune

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Scented shrub near a door or seating areaInformal flowering hedge or screenBack of a mixed border

Companion Plants

Peony Hardy Geranium WeigelaCatmint Lady's Mantle

Multiply

Propagation Methods

Good to Know

Common Questions

Mockorange questions

What zones can Mockorange grow in?

Mockorange is hardy in USDA Zones 4–8. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Is Mockorange deer resistant?

Yes — Mockorange is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.

When does Mockorange bloom?

Mockorange typically blooms in late spring through early summer. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does Mockorange need full sun?

Mockorange does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.

Is Mockorange drought tolerant?

Yes — once established (usually after the first full season), Mockorange handles dry spells with minimal watering. Water deeply its first year to build the root system that makes that possible.