Dahlia Blue Bayou is a striking decorative dahlia admired for its rich purple-blue blooms with a luminous, velvety finish. The large, fully double flowers are beautifully formed and make a bold statement in borders and cut flower displays. Flowering freely from mid-summer into autumn, this variety brings depth of colour and elegance to the garden. Blue Bayou is a reliable performer, valued for its dramatic presence and long-lasting blooms.

Why we like it

• Rich purple-blue decorative blooms

• Excellent for cutting

• Strong, reliable flowering habit

What to know

• Plant in a sunny position

• Requires fertile, well-drained soil

• Pinch early shoots to encourage bushier growth

• Stake plants to support large flowers

• Lift and store tubers over winter in colder areas

Flower colour
Purple-blue

Flowering months
July, August, September, October

Height and Spread
90–110 cm