Agastache 'Blackadder'
Herbaceous perennial with aromatic green leaves and bearing long-lasting, tiny, violet-blue flowers throughout summer and into autumn.
email us to enquire about availability
- Aspect: South-facing, West-facing
- Exposure: Sheltered
- Family: Lamiaceae
- Flower Colour : Black , Blue, Purple
- Flower Season: Autumn , Summer
- Foliage: Deciduous
- Fragrance: Foliage
- Habit : Bushy
- Hardiness : H4 (Hardy through most of the UK) -10 to -5C
- Moisture: Well-drained
- pH: Acid, Alkaline, Neutral
- Season of Interest : Autumn, Summer
- Soil: Chalk, Loam, Sand
- Sunlight: Full Sun
- Tags: Plants for Pollinators
- Height & Width: 90cm x 60cm
Agastache 'Blackadder'
Agastache 'Black Adder'
giant hyssop
CESSATION OF MAIL ORDER SERVICE
As of 1st July 2026, we will no longer be offering a mail order service. Orders received up to 30th June will be dispatched within 7-10 working days.
Our aim is to put more focus into our plant centre.
We can still help with sourcing plants for collection from our Langport plant centre. Simply email us your plant lists to [email protected] and we will contact you with prices and availability.
Herbaceous perennial with aromatic green leaves and bearing long-lasting, tiny, violet-blue flowers throughout summer and into autumn.
Collect in Store
This item is available for collection.
