Agastache 'Blackadder'
Family - Lamiaceae
Category - Perennial
Season of Interest - Spring, Summer, Autumn
Hardiness - H4
Height - 90cm or more
Width - up to 60cm
Location - The East Border
Description: A clump-forming herbaceous Perennial with a bushy, upright habit. Aromatic, mid to dark green leaves are triangular to ovate in shape with coarsely toothed to scalloped margins. The foliage smells of liquorice when crushed. Many small, tubular 2-lipped flowers are a shade of deep violet-blue and have darker purple calyces. The Blooms are held in dense spikes on upright stems and are produced from midsummer into mid-autumn. The flowers are very attractive to pollinating insects.
Flower:
Many small, tubular 2-lipped flowers are a shade of deep violet-blue and have dark purple calyces. The blooms are held in dense spikes on upright stems and are produced from July into October.
Flower colour: Blue
Flower shape: Tubular 2-lipped flowers in spikes
Flowering time: July, August, September, October
Foliage:
Aromatic, mid to dark green leaves are triangular to ovate in shape and have Crenate to Dentate margins. The foliage smells of liquorice when crushed. The leaves are held in opposite pairs on upright stems.
Foliage Senescence: Deciduous
Foliage Shape: Triangular to ovate
Propagation:
Division.
Cultivation:
Best in full sun in fertile, moisture-retentive soil that is well-drained.