Agastache 'Black Adder'

The whole agastache, or hyssop, family are massively on the up in garden fashion and rightly so. More
1 x 9cm pot 511379-1 £5.50 Delivery early May
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When in stock, please allow up to 4-6 weeks for despatch. For fruit & veg bare roots/crowns or potatoes, please allow up to 2 weeks for despatch.
3 x 9cm pots 511379-3 £13.50 Delivery early May
[?]
When in stock, please allow up to 4-6 weeks for despatch. For fruit & veg bare roots/crowns or potatoes, please allow up to 2 weeks for despatch.
More Details

The whole agastache, or hyssop family are massively on the up in garden fashion and rightly so. They flower for months, are highly aromatic, have delicious edible flowers and with this variety, as it goes over, cut it right back for beautiful fresh domes of foliage into winter.

Genus Agastache
Group/Species x hybrida
Variety Black Adder
Type Perennial
Common Name Hyssop
Border Position Border (Middle)
Soil Type Broad Tolerance
Scent Anise scented leaves
Site Full Sun
Moisture Well-drained
Height 90cm (36in)
Spacing 45cm (18in)
Sowing, Seeds, Planting Plant in a sunny, well drained position to perform well in the border. To aid quick establishment, sprinkle mycorrhizal fungi (Rootgrow) into the base of the planting hole. Displays are much more effective planted in groups of 3.
Care Tips Agastache prefers sunny free-draining soil but tolerates almost any soil and will cope with dry shade. They do not require extra feeding - this will only encourage leggy growth. The plants will be stronger and more floriferous if you cut back flower stalks as flowers fade. 
Flowering July - October
Harvesting Flower production: 3 months.
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
  • Sow Under Cover/Plant Indoors
  • Direct Sow/Plant Outdoors
  • Flowers/Harvest
Advice

We don't currently have additional advice on using / growing this particular product on our website, but if you do have a question that isn't answered on this page then please give us a call on 0345 092 0283 and we'll happily chat through any queries you may have, or email us at info@sarahraven.com. Please note all email replies are taking up to 10 working days.

Delivery

Plant Delivery - When in stock, please allow up to 4-6 weeks for despatch. For fruit & veg bare roots/crowns or potatoes, please allow up to 2 weeks for despatch.

Click here to find out more information about our delivery rates and times.

Agastache 'Black Adder' reviews

* * * * * Average based on 10 reviews

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Reviewed 19th August 2019 by Dominique

These have performed very well and have been covered in bees and butterflies. They have made a lovely colourful splash in the flower bed.

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Reviewed 6th August 2019 by Penny

Not looking very happy (looking as if too dry, but have watered it). Some of the newer stems are starting to look as if they will redover. Otherwise, I was about to dig it up to see if there were grubs in the compost.

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Reviewed 5th August 2019 by Tina

Had new borders to fill this year. Did buy plants from several suppliers but I can easily pick out my Sarah Raven purchases as they outshone the others in performance.

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Reviewed 3rd August 2019 by Carol

It is growing well despite not being in full sun

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Reviewed 1st August 2019 by Gill

very good quality and excellent service

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Reviewed 31st July 2019 by Deborah

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Reviewed 31st July 2019 by Fiona

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Reviewed 31st July 2019 by Andrea

very thin but tall and fabulous colour - better next year

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Reviewed 31st July 2019 by Patricia

Average plants which have not enjoyed this summer. My soil is thin chalk and the plants are struggling but I doubt they will survive the wintrr

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Reviewed 31st July 2019 by Bernice

Thriving and flowering well.