Quick Facts

• Mature size: Approx. 900–1200mm high x 600–800mm wide

• Position: Full sun to part shade

• Flowering: Late spring through autumn

• Flower colour: Deep indigo-blue

• Foliage: Fresh green, aromatic

• Climate tolerance: Heat and light frost-tolerant once established

• Water needs: Moderate; drought-tolerant once established

• Maintenance: Low – light pruning and deadheading

Why You’ll Love It

‘Indigo Spires’ pairs beautifully with yellow Rudbeckias, pink Echinacea, and ornamental grasses for dramatic contrast in sunny borders. Low-maintenance, resilient, and long-flowering, it provides strong vertical presence, pollinator support, and vibrant colour for naturalistic or formal planting schemes.

Planting & Care Tips

• Plant in full sun to part shade with well-drained soil.

• Water regularly during establishment, then reduce once settled.

• Deadhead spent flowers to encourage ongoing bloom.

• Prune lightly in late winter or early spring to maintain shape.

• Mulch lightly to retain moisture and suppress weeds.