When to plant:
(In the UK, In Pots/Containers, Seeds)

The Agastache Black Adder flowers in July, August , September and October. The ideal planting time for these is in the springtime between March and May.

How to plant:
(In the UK, In Pots/Containers)
Agastache Black Adder can be planted in borders and generally does well for a few years however is not a hardy plant and does not do well with cold winters and excess rain. Growing these striking looking flowers in pots so that they can be brought undercover during winter and early spring may be advisable.

How to grow:
(In Pots/Containers, from seed/cuttings, in the UK)

Agastache Black Adder are best grown from seed in pots and can be transported to larger pots as their average maximum spread is approximately 40cm. They can also be planted once established into sunny and dry-soiled borders.

Caring for:
(In Spring/Summer/Autumn & Winter, In Pots, In the UK)

Agastache Black Adder is a plant with a short life span and may need to be replaced every few years, particularly if subjected to a particularly harsh or wet winter. It may be advisable to bring the plants under cover for the winter and early spring months until the first harsh frosts have passed.
To keep the Agastache Black Adder growing well for as long as possible ensure that they are positioned in full sunlight as opposed to shade and are in fertile soil that is well drained.

Where to plant:

The Agastache Black Adder works well in a well established border, giving height. Agastache Black Adder prefers full sun so avoid planting in shade, instead choosing a border or large patio pot that receives optimum light and has well fertilised and well drained soil. 

What to plant with:
These Agastache Black Adder plants provide height and interest to the garden, with dramatic dark violet flowers on long spires. Agastache Black Adder would look well with ornamental grasses in a well drained border.

Companion/Combination plants for:

Agastache Black Adder would work well with a lavender plant of similar height and works well with ornamental grasses for a Mediterranean styled border. 

How to propagate:
(Cuttings/Seeds etc)
Agastache Black Adder can be grown from seed or a cutting. Fertilising cutting will make them more robust and more like to take root however the best results for propagation have been when growing from seed.

Is Agastache Black Adder hardy:
Agastache Black Adder is not a particularly hardy plant and rarely lasts more than three or four years. It is particularly susceptible to damage from winter weather and don’t do well with overwatering or wet soil.

Other types of Agastache:

There are twelve known species of Agastache within the Lamiaceae (perennial herb) family and they mostly originate and thrive in North America and eastern Asia.

Also in the family are Agastache Rupestris, which boasts a pink flower and Agastache 'Blue Fortune' which displays a lilac-blue flower. While different varieties of Agastache may look dissimilar they all share similar growing traits.