Double blue blooms last all season long. Dainty marbled bluepurple double blooms crown this drought-tolerant gem, providing continuous colour from early summer into autumn. These pollinator-friendly, cup-shaped flowers reach up to 4 cm wide atop tidy 40 cm mounds. Perfect for suppressing weeds in mixed borders or brightening patio containers, this resilient perennial adds sophisticated texture and reliable charm to any corner of the landscape.