Japanese barberry (Berberis thunbergii ‘Concorde’)

Berberis thunbergii 'Concorde' is a compact, deciduous Japanese barberry cultivar grown for its dense, rounded habit and deep purple foliage. It is typically used as a low accent shrub, border plant, or mass planting.

Berberis thunbergii 'Concorde' usually grows about 18 to 24 inches tall and 24 to 30 inches wide. Size varies with growing conditions and nursery strain.

No, Berberis thunbergii 'Concorde' is deciduous and drops its leaves in fall. Its foliage commonly develops scarlet or crimson tones before leaf fall.

The leaves are deep burgundy to purple, with the darkest and most consistent color in full sun. New growth may appear redder before maturing to purple.

Berberis thunbergii 'Concorde' is generally listed as hardy in USDA Zones 4 through 8. Local exposure, winter wind, snow cover, and nursery provenance can affect performance at the margins.

It grows in full sun to partial shade, but full sun produces the strongest purple foliage and usually the best flowering and fall color. Provide at least several hours of direct sunlight when possible.

Yes, it can grow in partial shade, although the foliage may become greener and the plant may flower less heavily. Morning sun or bright filtered light is preferable to deep shade.

Use well-drained soil; it can tolerate loam, sand, clay, or chalk if excess water drains away. Avoid persistently soggy sites, especially heavy clay that stays saturated.

Provide average moisture, watering when the top few inches of soil begin to dry. Once established, it can tolerate short periods of drought, but consistent moisture is helpful during its first growing season.

Yes, established plants have useful drought tolerance, particularly in well-drained soil. Water during prolonged hot, dry weather to reduce stress and preserve foliage quality.

Usually, little fertilizer is needed if the plant is growing in reasonably fertile soil. If growth is weak, apply a balanced slow-release fertilizer in spring according to the product label rather than overfeeding.

Reduced sunlight is the most common reason the foliage becomes greener, although excessive nitrogen, shade from nearby plants, or normal seasonal change can also contribute. Move or thin surrounding growth only if the plant is receiving insufficient light.

Aphids and berberis sawfly can occasionally damage Berberis thunbergii 'Concorde'. Inspect new growth and the undersides of leaves, and use the least-toxic control appropriate for the severity of the infestation.

Powdery mildew, leaf spots, and occasional root problems can occur, especially where air circulation is poor or soil remains wet. Improve spacing, avoid overhead watering, and remove badly affected foliage.

Plant it at the same depth as it grew in its nursery container, in a hole about twice as wide as the root ball. Backfill with the native soil, water thoroughly, and add a thin layer of mulch without covering the stems.

Space plants about 24 to 30 inches apart on center for a mass planting, depending on the desired fullness. Allow more room if you want each naturally rounded mound to remain visually distinct.

Yes, its compact size makes it suitable for a large container with drainage holes. Use a well-drained potting mix, protect the root system from severe winter cold, and do not allow the container to remain waterlogged.

Spring or fall is generally the best planting time in the United States. Plant in spring where winters are severe or the ground freezes early, and water well until the roots are established.

Usually, no; it naturally forms a compact mound and requires minimal pruning. Remove dead, damaged, or crossing branches, or lightly shape it after flowering if needed.

Prune after spring flowering if you want to shape the plant while minimizing the loss of future blooms. Renewal pruning can be done during dormancy, but wear protective gloves because the stems have sharp spines.

Thin out the oldest stems at their base and shorten excessively long branches rather than shearing the entire shrub repeatedly. Severe renewal pruning is tolerated, but it may temporarily reduce flowering and foliage display.

The cultivar can be propagated from softwood or semi-hardwood cuttings taken during the growing season. Seed is less dependable for preserving the exact 'Concorde' characteristics because seedlings may not come true to the cultivar.

It may produce red berries and viable seed, although fruiting can vary by plant and location. Do not assume this cultivar is sterile; remove unwanted seedlings and check local invasive-plant rules before planting.

Yes, its branches bear sharp spines. Wear sturdy gloves and long sleeves when planting, pruning, or handling the shrub, and avoid placing it beside frequently used walkways.

The fruits are ornamental and should not be eaten by pets. If a pet consumes berries or other plant material and shows concerning symptoms, contact a veterinarian or a pet poison service promptly.

No, do not treat the berries as an edible crop. They are ornamental, and the plant is considered potentially harmful if eaten, so keep berries away from children and pets.

It is generally avoided by deer because of its spiny branches and unpalatable foliage. Deer resistance is not absolute, particularly when food is scarce.

It usually flowers in mid- to late spring, often around April or May in much of the United States. The small yellow to reddish-tinged flowers are ornamental but not the plant's main feature.

The flowers are small, pale yellow to yellow blooms that may have reddish tones and appear along the stems. They are followed by ornamental red berries in favorable conditions.

It can produce small red berries in fall, although berry production varies and some plants may fruit lightly or not at all. The berries are ornamental rather than edible.

Yes, its purple foliage commonly shifts toward scarlet, crimson, or reddish tones in fall. Strong sunlight generally improves both the summer foliage color and the autumn display.