
Common Name: Longwood Blue Caryopteris
A classic, dependable late-season flowering shrub producing abundant clusters of deep true-blue flowers from late summer into early fall. Aromatic gray-green foliage provides a soft contrast to the intense bloom color. ‘Longwood Blue’ has a fuller, more upright habit than many older cultivars and is prized for reliable performance and strong garden presence. Plant Characteristics Type: Deciduous shrub Form: Upright to rounded Mature Width: 3–4 ft Mature Height: 3–4 ft Flower Color: Deep blue Foliage Color: Gray-green, aromatic Growing Conditions USDA Hardiness Zones: 5a–9b Light: Full sun (best flowering and compact habit) Soil: Average to dry, well-drained soils Water: Low to moderate; drought tolerant once established Maintenance: Low; cut back hard in early spring (blooms on new wood) Landscape Uses Shrub borders, pollinator gardens, perennial-style plantings, mass plantings, and foundation beds. Excellent for providing late-season blue color when few shrubs are in bloom. Care Tips Prune to 6–12 in in early spring to promote vigorous flowering Avoid wet winter soils Performs best in hot, sunny locations
| Plant Type: | Perennial, Flowering Shrub |
| Width: | 2' |
| Height: | 2' |
| Fragrant: | Yes |
| Fruit | Yes |
| Growth Rate | Fast |
| Zone: | 5 - 9 |
| Deer Resistant: | Yes |
| Salt Tolerant: | No |
| Drought Tolerant: | No |
| Attract: | Butterflies |
| Exposure: | Full Sun |
| Bloom Time: | Late Summer, Early Fall, Fall |
| Bark Type: | Smooth |
| Shape: | Rounded, Upright |
| Soil Type | Moist well-drained |
| Flower Color: | Blue |
| Leaf Color: | Asparagus |