Images Depict Mature Plants
Dark Knight Caryopteris
Caryopteris x clandonensis 'Dark Knight'
Dark Knight Bluebeard is a really useful shrub when a sunny planting needs one more strong round of color heading into fall. The blue flowers are rich, the silver-gray foliage gives it character even out of bloom, and pollinators work it hard right when the garden still needs that extra spark.
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Deep blue late-season flowers and silver-gray foliage for sunny gardens
A late bloomer that keeps the garden energized.
Dark Knight Bluebeard is one of those shrubs that becomes most valuable exactly when the landscape starts to need fresh color. In late summer and into early fall, it lights up with clusters of deep blue to purplish-blue flowers just as many earlier bloomers are easing off. That bloom timing makes it a smart choice for gardeners who want to stretch the season rather than repeat the same spring show.
Silver-gray foliage gives the plant a distinctive look even before it blooms.
One of the strongest ornamental features of Dark Knight Bluebeard is the contrast between its deep blue flowers and its aromatic silver-gray foliage. The leaves add texture and a slightly cool-toned cast to sunny borders, which helps the flower color read even more intensely once blooming begins. It is a shrub that looks useful in the landscape even before the main show starts.
Pollinators stay active around it late in the season.
Dark Knight Bluebeard is especially valuable in pollinator gardens because it flowers at a time when nectar sources can become more limited. Bees, butterflies, hummingbirds, and other beneficial insects are drawn to the blooms, helping keep the garden active well into late summer and early fall.
A strong fit for borders, foundations, and sunny mixed beds.
Because it stays compact and mounded, Dark Knight Bluebeard fits neatly into smaller landscape beds, front-of-border placements, foundation accents, and mixed perennial gardens. It pairs especially well with coneflowers, salvias, black-eyed Susans, yarrow, and ornamental grasses that also peak in the hotter part of the season.
Easy care makes it highly practical.
Dark Knight Bluebeard performs best in full sun and average, well-drained soil. Once established, it handles mild drought better than many flowering shrubs and is widely regarded as deer-resistant and rabbit-resistant. Since it blooms on new wood, annual spring pruning helps keep it tidy, vigorous, and full of flowers.
| Hardiness Zone: | 5-9 |
|---|---|
| Mature Height: | 2 to 3 feet |
| Mature Width: | 2 to 3 feet |
| Sunlight: | Full Sun |
| Bloom Time / Color | Late summer into early fall; deep purplish-blue flowers |
| Soil Condition: | Average, well-drained soil |
| Water Requirements: | Moderate during establishment; occasional water once established |
| Wildlife Value | Attracts bees, butterflies, hummingbirds, and other pollinators |
| Ornamental Features | Late-season blue flowers, silver-gray foliage, compact mounded habit |
| Resistance (deer/disease/drought/etc.) | Deer resistant, rabbit resistant, mildly drought tolerant once established |
| Landscape Uses | Sunny borders, pollinator gardens, foundation accents, mixed beds, containers, small-space shrub plantings |
How to Care for Dark Knight Caryopteris
Be sure to read our planting instructions to ensure a healthy and happy Dark Knight Bluebeard plant for years to come!
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How should I plant Dark Knight Bluebeard?
Plant Dark Knight Bluebeard in full sun in average, well-drained soil. Dig a hole about twice as wide as the root ball and no deeper than the root ball itself, then set the shrub level with or slightly above the surrounding soil and backfill carefully. Water deeply after planting and add mulch around the base to help conserve moisture and reduce weed competition, but keep the mulch a few inches away from the stems. Good drainage is especially important, since Dark Knight Bluebeard performs much better in a sunny, open site than in heavy, soggy ground.
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How often should I water Dark Knight Bluebeard after planting?
Water Dark Knight Bluebeard deeply right after planting, then keep the soil evenly moist during the first growing season while it establishes. In most landscapes, that means watering during dry periods rather than keeping the soil constantly wet. Once established, Dark Knight Bluebeard usually needs only occasional supplemental watering and can handle mild drought better than many flowering shrubs. During extended hot periods, deep watering helps maintain healthier foliage and stronger bloom performance.
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When should I fertilize Dark Knight Bluebeard?
Fertilize Dark Knight Bluebeard in spring just before new growth begins if your soil is lean or if plant growth has been weak. A balanced general-purpose fertilizer or a light application of compost is usually enough to support healthy seasonal growth. Avoid overfeeding, because overly rich conditions can encourage weaker, softer growth. In most gardens, full sun and good drainage do more for Dark Knight Bluebeard than heavy fertilizer applications.
When and how should I prune Dark Knight Bluebeard?
Prune Dark Knight Bluebeard in late winter or very early spring before strong new growth begins. Because it blooms on new wood, cutting it back at that time helps promote fresh growth, a tidier shape, and strong flowering through late summer. You can reduce the stems significantly each spring to keep the shrub compact and rounded. Light cleanup during summer is fine, but the main structural pruning is best done before spring growth starts.
