We take great care to produce your peat free plants. Propagation and growing on is carried out by our team who will only part with your plants once they are strong and well rooted.
Agastache 'Blackadder'
Agastache 'Blackadder'
Agastache 'Blackadder'
Agastache 'Blackadder'
Agastache 'Blackadder'
Agastache 'Blackadder'
Agastache 'Blackadder'
Agastache 'Blackadder'

Agastache 'Blackadder'

Giant hyssop

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Details

Creates a good vertical effect from July to September. Clumps of tight stems with green aromatic foliage carry spikes of dark violet-blue blue bottle brush flowers during the summer. 

AspectFull sun
Flower ColourPink | Purple
Flowering PeriodJul | Aug | Sep
FoliageNot evergreen
Goes Well WithAchillea, Echinacea, Geranium
Growth HabitClump-forming
HardinessFully hardy
Height90cm
SoilRich and fertile
Spread30cm
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