Sweet box (Sarcococca hookeriana var. humilis 'Sarsid2' FRAGRANT MOUNTAIN)

Overview

The Sarcococca hookeriana var. humilis ‘Sarsid2’ FRAGRANT MOUNTAIN is an exceptional broadleaf evergreen valued for its dense, glossy foliage and extremely fragrant late winter to early spring blooms. Commonly known as Sweet box, this cultivar stands out due to its wider, darker, and slightly more lustrous leaves compared to the species. It provides essential structure and deep green color when most gardens are dormant.

This specific selection, ‘Sarsid2’ FRAGRANT MOUNTAIN, remains compact, typically reaching only 2 to 3 feet tall and spreading slowly via suckers to 3 or 4 feet wide. Its resilience in heavy shade and deer pressure makes Sarcococca hookeriana var. Humilis ‘Sarsid2’ FRAGRANT MOUNTAIN a highly practical choice for difficult garden spots. The subtle white flowers emit a potent, hyacinth-like scent, rewarding gardeners during the coldest months.

For gardeners seeking year-round texture beneath deciduous trees or along shaded walkways, this Sweet box variety offers reliable performance. Its low-growing habit fulfills roles ranging from evergreen ground cover to low, dense hedging.

Fast Facts

• Plant Family: Buxaceae
• Plant Type: Broadleaf evergreen
• USDA Zones: USDA Zones 6-8
• Size at Maturity:
  • Height: 2-3 ft
  • Spread: 3-4 ft
• Bloom Time: March to April
• Bloom Description: White
• Sun Exposure: Part shade to full shade
• Water Needs: Medium
• Maintenance Level: Medium

How to Grow

Begin planting Sarcococca hookeriana var. humilis ‘Sarsid2’ FRAGRANT MOUNTAIN in spring or fall when soil temperatures are moderate. This shrub thrives best in organically rich, acidic soils that are consistently moist but exceptionally well-drained. Proper siting is crucial; ensure it receives part shade to full shade, as leaves will quickly lose their desirable luster if exposed to intense afternoon sun.

During establishment, ensure consistent moisture retention. While established plants develop some drought tolerance, regular watering during dry spells will maintain the vibrant health of the dark green foliage. Avoid locations experiencing standing water, as drainage is paramount for this species.

Maintenance is generally low. Pruning should be done lightly in the spring immediately following the flowering period if shaping is necessary to maintain an attractive shape or hedge line. The cold hardiness of this variety is very good, generally tolerating temperatures down to -10°F.

Landscape Uses

Sarcococca hookeriana var. humilis ‘Sarsid2’ FRAGRANT MOUNTAIN excels where other shrubs struggle, specifically in deep shade. Its year-round foliage makes it an excellent evergreen ground cover, softening the base of large trees in woodland gardens where its fragrant flowers are often first noticed.

Use this Sweet box cultivar to define the edges of shady borders or to create formal, low hedges along pathways where pruning encourages a neat appearance. It integrates well into shady parts of cottage gardens, offering textural contrast against ferns and hostas. The tolerance to deer is an added benefit for properties bordering wilder areas.

Its compact, spreading nature allows it to naturalize effectively under taller plantings, creating a consistent, dark green carpet that persists through winter.

Standout Features

Flower Qualities

• Showy
• Fragrant

Fruit Qualities

• Showy

Noteworthy Characteristics

Sarcococca hookeriana commonly called sweetbox is a low-growing, broadleaf evergreen shrub to 5’ tall that spreads, albeit slowly, by stolons to 6’ wide or more over time in shady areas of the landscape. Lustrous, lanceolate, leathery, dark green leaves (to 3 1/2” long and to 3/4” wide) are evergreen. Tiny, apetalous, unisexual, tubular, fragrant, white flowers (1/2” long) bloom in the leaf axils in March-April. ‘Sarsid2’ is a compact evergreen shrub that spreads slowly by suckering. It has shiny, leathery, oblanceolate leaves that are wider, more glossy and darker green than the species. Its white, tubular flowers have a hyacinth-like fragrance and bloom in late winter to early spring.

Tolerances

• Deer
• Heavy Shade

Potential Problems

This plant generally suffers from no serious insect or disease problems, making it a robust choice for low-maintenance landscapes. Avoiding planting in poorly drained or heavy clay soils is the best preventative measure against root issues. Should minor leaf spot occur, ensure improved air circulation during pruning.

Frequently Asked Questions

What hardiness zones is Sweet box suitable for?

Sarcococca hookeriana var. humilis ‘Sarsid2’ FRAGRANT MOUNTAIN is typically suitable for USDA Hardiness Zones 6 through 8.

How large does Sarcococca hookeriana var. humilis ‘Sarsid2’ FRAGRANT MOUNTAIN grow?

This compact cultivar usually reaches a mature height between 2 and 3 feet, with a spread between 3 and 4 feet wide.

What sun exposure does Sweet box need?

This plant prefers part shade to full shade conditions; avoid planting where it will receive harsh, direct afternoon sun, which can scorch the leaves.

When does Sarcococca hookeriana var. Humilis ‘Sarsid2’ FRAGRANT MOUNTAIN bloom?

It offers its highly fragrant white flowers between March and April.

Conclusion

The combination of glossy, dark evergreen foliage, shade tolerance, and powerful winter fragrance confirms the status of Sarcococca hookeriana var. humilis ‘Sarsid2’ FRAGRANT MOUNTAIN as an indispensable plant for shaded landscapes. This dependable Sweet box provides fantastic year-round structure and seasonal perfume. Before planting, confirm your garden falls within USDA Zones 6 to 8 and ensure the soil provides the medium moisture and excellent drainage it requires.

Companion Planting

When designing a woodland garden using Sarcococca hookeriana var. humilis ‘Sarsid2’ FRAGRANT MOUNTAIN, select companions that share similar cultural needs for moist, well-drained, acidic soil and shade. Good pairings include various moisture-loving Hellebores (Lenten Roses), which bloom around the same time, contrasting their flowers against the dark green backdrop of the Sweet box.

Consider pairing with large-leaved Hostas or various woodland Ferns, such as Japanese Painted Ferns, for textural variation. These companions require similar medium water supplies and thrive in the dappled light preferred by the Sarcococca. This creates a layered, lush look ideal for deep shade areas.

Seasonal Care Calendar

For optimal health, focus seasonal attention on soil moisture and pruning. During the dormant winter and early spring, the fragrant blooms of Sarcococca hookeriana var. humilis ‘Sarsid2’ FRAGRANT MOUNTAIN are a major feature, so ensure established plants have adequate moisture leading into the bloom period.

Spring cleanup should wait until after the March to April flowering fades. This is the ideal time to prune minimally to control shape or height, as the plant sets its next year’s flowers shortly thereafter. Throughout summer, maintain consistent soil moisture, especially if the area lacks natural rainfall. Avoid fertilization unless a soil test indicates a severe deficiency, as excessive feeding may reduce flower production.