How to Grow Italian Bugloss
Anchusa azurea
Italian bugloss (Anchusa azurea) is a cottage garden classic bearing intense cobalt-blue flowers on branching stems in early summer. It thrives in full sun and well-drained, even poor soil. Cut back hard to the base after the first flush to encourage a second wave of blooms. Being tap-rooted, it dislikes transplanting — choose its position carefully. A short-lived perennial, it typically needs replacing or propagating from root cuttings every 3–4 years.
Yearly Lifecycle
Care Essentials
Apply a balanced granular fertiliser in spring as growth resumes. Avoid high-nitrogen feeds which encourage lush foliage at the expense of the vivid blue flowers.
Watch For
- Powdery mildew in dry spells
- Root rot in poorly drained soils
- Aphids on young shoots
Care Requirements
Light
Full sun
Requires full sun for the best flower colour and sturdiest growth. Tolerates light shade but becomes lax and flowers less freely.
Watering
Low — drought-tolerant once established
Water regularly after planting to establish. Once settled, Italian bugloss is drought-tolerant. Avoid waterlogged conditions which cause root rot.
Fertilizing
Balanced feed in spring
A single application of balanced granular fertiliser in spring is sufficient. Overfeeding with nitrogen produces coarse foliage at the expense of flowers.
Pruning
Cut hard after first flush
Cut all stems back to the basal rosette immediately after the first flush of flowers fades. This is the key technique for a strong second flowering in late summer.
Spacing
60 cm apart
Space plants 60 cm apart. They resent root disturbance so plant in their final position and leave undisturbed.
Support
May need staking on tall forms
Taller cultivars such as Loddon Royalist can reach 1.2 m and may need discreet staking in exposed or windy gardens.
Spacing & Planting
| Plant spacing | 60 cm |
| Row spacing | 60 cm |
| Mature height | 120 cm |
| Mature spread | 60 cm |
