Berberis thumbergii 'Orange Rocket'

orange rocket barberry

Berberidaceae

Species native to Japan; cultivar selected in the Netherlands

Attracts Pollinators Deer Resistant Drought Tolerant Container Friendly

SunFull Sun

WaterLow · drought-tolerant

HardinessZones 4–8

Overview

Berberis thunbergii 'Orange Rocket' is a narrow, columnar deciduous shrub reaching 48–60 inches (120–150 cm) tall with a spread of 18–24 inches (45–60 cm), producing a height-to-width ratio of approximately 3:1 at maturity — among the narrowest forms in commercial B. thunbergii. Leaves are small, obovate, 0.5–1 inch (1.3–2.5 cm) long, densely packed along upright stems. Foliage color shifts through three stages: new spring growth emerges coral-orange to bright orange-red, matures to reddish-purple through summer, and shifts to red-orange in fall. Single sharp spines occur at each leaf node. Pale yellow flowers 0.2–0.3 inch (5–8 mm) across appear singly or in clusters of 1–3 in April–May, largely concealed by the dense foliage. Red oval berries 0.3 inch (8 mm) long ripen in September–October. Growth rate is moderate at 6–10 inches (15–25 cm) per year. The narrow columnar form holds through the first several years; older specimens may widen at the top to 24–30 inches (60–75 cm). B. thunbergii is listed as invasive in Massachusetts, Maine, New Hampshire, New York, Pennsylvania, Ohio, Wisconsin, and Minnesota; cultivars are restricted under those state regulations.

Native Range

The species Berberis thunbergii is native to Japan and possibly eastern China, occurring on mountain slopes, forest margins, and rocky areas from near sea level to 5,000 feet (1,500 m) elevation. 'Orange Rocket' was selected by Van der Bom Nurseries in the Netherlands.

Suggested Uses

Planted as a vertical accent in borders, foundation plantings, and along walkways at 18–24 inch (45–60 cm) spacing in zones 4–8. The narrow footprint suits planting strips as narrow as 2 feet (60 cm). Grows in containers of at least 5 gallons (19 L). Not suited to states where B. thunbergii cultivars are restricted under invasive species regulations, including Massachusetts, Maine, New Hampshire, New York, Pennsylvania, Ohio, Wisconsin, and Minnesota.

How to Identify

Berberis thunbergii 'Orange Rocket' is identified by the coral-orange to bright orange-red new growth color combined with a narrow columnar habit at 18–24 inches (45–60 cm) wide. Differs from B. thunbergii 'Helmond Pillar' (syn. 'Red Pillar'), which has dark reddish-purple new growth rather than orange-red. Differs from B. thunbergii 'Golden Rocket' by orange-to-purple foliage rather than chartreuse-yellow. Single spines and small obovate leaves confirm placement in B. thunbergii.

Appearance

Size & Dimensions

Height4' - 5'

Width/Spread1'6" - 2'

Reaches mature size in approximately 5 years

Colors

Flower Colors

yellow

Foliage Colors

orange

red

purple

Fall Foliage Colors

red

orange

Bloom Information

Bloom Period

~2 weeks

Spring

Pale yellow flowers appear singly or in clusters of 1–3 along the stems in April–May, lasting 1–2 weeks. Individual flowers are 0.2–0.3 inch (5–8 mm) across and largely concealed by the dense foliage. Bright red oval berries 0.3 inch (8 mm) long ripen in September–October and persist into early winter.

Detailed Descriptions

Foliage Description

coral-orange new growth maturing to reddish-purple through summer; red-orange in fall

Growing Conditions

Sun Requirements

SunFull Sun

Requires 6-10 hours of direct sunlight daily

• Full Sun: 6+ hours of direct sunlight

• Partial Shade: 3-6 hours of direct sunlight

• Full Shade: Less than 3 hours of direct sunlight

Soil Requirements

pH Range5.5 - 8.0(Neutral)

357912

Soil Types

loam clay sand chalk

Drainagewell drained

Water & Climate

Water Needs

Low

Frost Tolerance

hardy

Time to Maturity

3–5 years

Drought Tolerance

Drought tolerant when established

Care & Maintenance

Care Guide

Plant in well-drained soil with a pH of 5.5–8.0 in full sun for the most saturated orange and purple foliage color. In partial shade, foliage color is muted and the habit becomes more open. Tolerates clay, sand, chalk, and alkaline conditions. Drought-tolerant once established. The columnar form develops without shaping for the first several years. B. thunbergii is listed as invasive in Massachusetts, Maine, New Hampshire, New York, Pennsylvania, Ohio, Wisconsin, and Minnesota; cultivars are restricted under those state regulations. No serious pest or disease problems in cultivation.

Pruning

Outward-splaying stems can be removed in early spring (March) to maintain the columnar form. Light shearing after flowering tightens the silhouette. Hard pruning into bare wood produces slow regrowth. Single spines on stems warrant protective handling during pruning work.

Pruning Schedule

early spring