Ornamentalshrub ornamentalStraightforward

Christmas box

Sarcococca confusa

A small, slow, unremarkable-looking evergreen whose tiny white winter flowers are among the most powerfully scented of any hardy plant — enough that people stop and look for the source without finding it. Grows in the dry shade beside a north door, which is exactly where the scent is most use.

Position: Full shade or Dappled shade or Partial shade
Water: low demand
Drainage: Moisture-retentive
Grows to: 100–150 cm × 100–150 cm
Hardiness: H5
Flowers: December to February
Difficulty: Straightforward

August

Nothing to do

No sowing, planting, harvesting or pruning window falls in August.

Christmas box’s year

Resolved for United Kingdom (general). Every window is stored against a climate event rather than a date, so a late frost pocket runs later than the band shows. What else August calls for.

Activity	J	F	M	A	M	J	J	A	S	O	N	D
Plant			March.	April.						October.	November.
In flower	January.	February.										December.

Timing that travels

The band above resolves this plant's windows into months for one region. These are the windows themselves, stored against a climate event rather than a date — which is the form that survives being carried to a colder garden, a frost pocket, or next year.

Conditions it needs

Light: Full shade, Dappled shade, Partial shade
Frost: Very hardy
Hardiness rating: H5 (RHS)
Grows best at: 8–22 °C
Soil: Loam, Clay, Chalky
Soil pH: 6–7.8
Drainage: Moisture-retentive
Water needs: low
Drought: good tolerance
Waterlogging: poor tolerance
Heat: moderate tolerance
Wind and exposure: poor tolerance

Where these figures come from

LightSourced guidancemoderate confidence

Royal Horticultural Society: Sarcococca — position

Checked 2026-08-13

FrostSourced guidancehigh confidence

Royal Horticultural Society: Sarcococca — hardiness

Checked 2026-08-13

Hardiness ratingSourced guidancemoderate confidence

Royal Horticultural Society: RHS hardiness ratings

Checked 2026-08-13

Grows best atSourced guidancemoderate confidence

Royal Horticultural Society: Sarcococca — temperature

Checked 2026-08-13

SoilSourced guidancemoderate confidence

Royal Horticultural Society: Sarcococca — soil

Checked 2026-08-13

Soil pHSourced guidancemoderate confidence

Plant Finder — Missouri Botanical Garden: Sarcococca confusa — culture

Checked 2026-08-13

DrainageSourced guidancemoderate confidence

Royal Horticultural Society: Sarcococca — soil

Checked 2026-08-13

Water needsHorticultural consensusmoderate confidence

No external citation — see the evidence type above.

Checked 2026-08-13

DroughtHorticultural consensusmoderate confidence

Tolerates dry shade once its roots are down.

No external citation — see the evidence type above.

Checked 2026-08-13

WaterloggingHorticultural consensusmoderate confidence

No external citation — see the evidence type above.

Checked 2026-08-13

HeatHorticultural consensusmoderate confidence

No external citation — see the evidence type above.

Checked 2026-08-13

Wind and exposureHorticultural consensusmoderate confidence

Wants shelter; scorches in cold drying wind.

No external citation — see the evidence type above.

Checked 2026-08-13

On your soil

Computed by comparing this plant's recorded requirements against each soil's recorded characteristics. A recorded horticultural fact overrides the comparison where GrowingHQ holds one.

Soil	Verdict	Why
Heavy clay	Works, with one condition	Christmas box will crop on heavy clay, but one thing has to be dealt with first. It needs ground that drains, and this soil holds water. A plant that stays in the ground through winter with its roots in cold, saturated soil rots — which is what kills most of what fails on heavy ground, rather than the cold.Improve the drainage before planting — a raised bed, or bulky organic matter worked in over several seasons. Do not add sand to clay in small quantities; it makes the problem worse.
Sandy	Grows well here	Christmas box grows perfectly well on sandy without special measures, though it is not the soil it would choose.
Chalky and alkaline	Grows well here	Christmas box grows perfectly well on chalky and alkaline without special measures, though it is not the soil it would choose.
Loam	Prefers this soil	Loam suits Christmas box as it stands: The pH suits it: it wants 6 to 7.8, and this soil is in that range. Loam is among the soils it is recorded as suiting. The soil holds moisture, which saves a great deal of watering.
Silty	Grows well here	Christmas box grows perfectly well on silty without special measures, though it is not the soil it would choose.
Peaty and acid	Works, with one condition	Christmas box will crop on peaty and acid, but one thing has to be dealt with first. It needs ground that drains, and this soil holds water. A plant that stays in the ground through winter with its roots in cold, saturated soil rots — which is what kills most of what fails on heavy ground, rather than the cold.Improve the drainage before planting — a raised bed, or bulky organic matter worked in over several seasons. Do not add sand to clay in small quantities; it makes the problem worse.
Shallow over rock	Prefers this soil	Shallow over rock suits Christmas box as it stands: Loam is among the soils it is recorded as suiting. It stands dry conditions better than most, which this soil will test.
Made ground and urban soil	Works, with one condition	Christmas box will crop on made ground and urban soil, but one thing has to be dealt with first. It needs ground that drains, and this soil holds water. A plant that stays in the ground through winter with its roots in cold, saturated soil rots — which is what kills most of what fails on heavy ground, rather than the cold.Improve the drainage before planting — a raised bed, or bulky organic matter worked in over several seasons. Do not add sand to clay in small quantities; it makes the problem worse.

Not sure which you have? Four hand tests will settle it.

Space and spacing

Mature height: 100–150 cm
Mature spread: 100–150 cm
Rooting depth: 40 cm
Spacing: 75–100 cm apart

Where these figures come from

Mature heightHorticultural consensusmoderate confidence: No external citation — see the evidence type above.
Checked 2026-08-13
Mature spreadHorticultural consensusmoderate confidence: No external citation — see the evidence type above.
Checked 2026-08-13
Rooting depthHorticultural consensusmoderate confidence: No external citation — see the evidence type above.
Checked 2026-08-13
SpacingSourced guidancemoderate confidence: Royal Horticultural Society: Sarcococca — spacing
Checked 2026-08-13

Measured centre to centre. Plants set closer than this compete for light and water long before they look crowded, and the crowding cannot be undone once they are in.

Habit and ultimate size

What the plant becomes, rather than what it is when you buy it. The gap between the two is where most planting mistakes live.

Foliage: Evergreen
In a container: Good in a container long-term

Where these figures come from

FoliageSourced guidancehigh confidence: Royal Horticultural Society: Sarcococca confusa — foliage
Checked 2026-08-13
In a containerHorticultural consensusmoderate confidence: No external citation — see the evidence type above.
Checked 2026-08-13

Growth rate: Slow — under about 30 cm a year
Ultimate height: 100–150 cm
Ultimate spread: 100–150 cm
Time to reach it: 15–20 yearsSourced guidance

Where these figures come from

Growth rateSourced guidancemoderate confidence: Royal Horticultural Society: Sarcococca confusa — growth rate
Checked 2026-08-13
Ultimate heightSourced guidancemoderate confidence: Royal Horticultural Society: Sarcococca confusa — ultimate height
Checked 2026-08-13
Ultimate spreadSourced guidancemoderate confidence: Royal Horticultural Society: Sarcococca confusa — ultimate spread
Checked 2026-08-13
Time to reach itSourced guidancelow confidence: Royal Horticultural Society: Sarcococca confusa — time to ultimate size
Checked 2026-08-13

Cutting it back. Rarely needs anything. Slow growth and a naturally dense habit mean an unpruned plant stays in shape for decades, which is uncommon among evergreens and part of why it suits a small shaded space.

source

Horticultural consensusmoderate confidence

No external citation — see the evidence type above.

Checked 2026-08-13

How it spreads. Increases slowly by suckers into a widening thicket. Easily controlled, and the rooted pieces are the simplest way to propagate it.

source

Horticultural consensusmoderate confidence

No external citation — see the evidence type above.

Checked 2026-08-13

Where and how you can grow it

Each way of growing is assessed separately, and “not assessed” is a real answer rather than a gap we have filled in with a guess.

Method	Suitability	What it needs
Open ground	Well suited source Sourced guidancemoderate confidence Royal Horticultural Society: Growing method suitability Checked 2026-08-13
Traditional dug bed	Well suited source Sourced guidancemoderate confidence Royal Horticultural Society: Growing method suitability Checked 2026-08-13
Raised bed	Well suited source Sourced guidancemoderate confidence Royal Horticultural Society: Growing method suitability Checked 2026-08-13
Container	Well suited source Sourced guidancemoderate confidence Royal Horticultural Society: Growing method suitability Checked 2026-08-13

Growing it

PlantingSite it where people pass in winter — beside a back door, along a path to the bins — rather than where it will look best in summer. The plant is visually negligible and the scent is the entire point, and it only works within a few metres.
PropagationSpreads slowly by suckers, and a rooted piece detached from the edge of an established clump in spring transplants readily. This is far quicker than raising it from seed, which takes years.

Where this guidance comes from

PlantingSourced guidancehigh confidence: Royal Horticultural Society: Sarcococca — position
Checked 2026-08-13
PropagationSourced guidancemoderate confidence: Royal Horticultural Society: Sarcococca — propagation
Checked 2026-08-13

The rule is the same in all four: the new piece needs both a growing point and roots of its own. A cutting is the exception that has to make its roots afterwards, which is why the node matters so much.

Sources for this page

GrowingHQ editorial synthesis · Plant Finder · Royal Horticultural Society

Each figure on this page carries its own citation, under the “where these figures come from” note in its section. Record last reviewed 2026-08-14.