Giant hyssop 'Black Adder' (Agastache)
Agastache 'Black Adder'Height 15 cm
4.9 · 36 customer reviews of XXLplant36 reviews- Choose your own quantity, from 6 to 600 plants
- Dark purple flowers from July to autumn
- About 7 plants per m²
Order now? Usually delivered within 4 to 5 working days
Free delivery from €99, otherwise €6,95
Pros and cons
According to our plant experts
- Pro: Long flowering from July into autumn with dark purple spikes.
- Pro: Attracts lots of bees and butterflies.
- Pro: Fragrant leaves and good drought tolerance.
- Con: Does not tolerate wet soil in winter.
- Con: Needs full sun to flower well.
Secure payment
You pay through Shopify's secure checkout. Your payment details go straight to the payment provider; we never see or store them. With Klarna you can also pay later.
Usually delivered within 2 - 5 working days
Order today and your plant usually arrives within 4 to 5 working days.
Beschermd verstuurd
In een doos speciaal voor planten, met een cold pack of heat pack bij extreem weer.
Gekweekt in Europa
Rechtstreeks van gespecialiseerde kwekers in Nederland, België en Zuid-Europa.
Meer dan 300 grote planten
Van kamerpalm tot olijfboom, tot wel 3 meter hoog.

★★★★★Beautiful, Big and Perfectly Packaged!
Barbara Verified buyerPhilodendron Green Wonder
I am very happy with my purchase! The plant is beautiful and huge. It arrived in perfect condition and was very well packaged and protected. I am extremely satisfied and would definitely recommend it!



★★★★★A mini forest as a plant
Anoniem Verified buyerPolyscias Hawaiiana Ming
A mini forest as a plant. Looks beautiful in the living room.

★★★★★Beautiful plant
Anoniem Verified buyerCtenanthe oppenheimiana 130 cm hoog
Beautiful, bigger than expected and leaves that curl up every evening so you can see the shimmering purple underside. Eye-catcher!!

★★★★★Nice plant
Anoniem Verified buyerLicuala grandis 90 cm hoog
Nice plant with two new leaves on the way. Very happy!

★★★★★Easy to order and quick and safely delivered
Esther Konijn Verified buyerXXLplant
Nice website, easy to order, clear communication and safe and fast delivery

★★★★★Beautiful healthy plant + quick and safe delivery
Esther Konijn Verified buyer
Very happy with the Kentia palm that I ordered. A beautiful, large palm that fits perfectly in my living room. Ordering it was super easy, communication was clear and the delivery was fast. I was a bit worried about how...
★★★★★Excellent customer service
Barbara Verified buyerXXLplant
Excellent customer service, fast shipping, and great prices. I am very happy with my shopping experience and would definitely recommend this store!
★★★★Het mag wel wat plant vriendelijker worden bezorgd
Anoniem Verified buyerStrelitzia nicolai
Het mag wel wat plant vriendelijker worden bezorgd. De plant kwam een beetje beschadigd aan. Door dat de bladeren op een onjuiste manier in de doos waren gestopt. Verder is het een mooie plant.
★★★★★Goede service en een mooie plant
Karina de haas Verified buyerDracaena Cintho
Ik ben blij verrast! Een mooie uitziende plant en goed verpakt ontvangen. Bij de mededeling vroeg ik of zij wilde kijken naar een rechtopstaande plant en als het kan iets groter dan aangegeven maat. Daar heeft de kweker ook goed...
Veelgestelde vragen over Agastache 'Black Adder'
De vragen die we het vaakst krijgen over deze plant. Staat jouw vraag er niet bij? Onze plantexperts helpen je graag.
Stel je vraagHow many Agastache 'Black Adder' do you plant per m²?
Plant them about 35 to 40 cm apart, so you need around 7 plants per m². The calculator on this page converts your area into a number of plants.
When do you plant Agastache 'Black Adder'?
The best time is spring, from March to May, so the plant is well rooted before winter. Planting in September and October is also possible, as long as the soil drains well.
Where do you put Agastache 'Black Adder'?
In a sunny spot in the border, the gravel bed or a large pot. The more sun, the richer the flowering. It likes soil that lets water drain away quickly.
Is Agastache 'Black Adder' hardy?
Yes, in a dry spot it gets through a Dutch winter well. Wet soil in winter is the biggest threat, so well-drained soil is important. The leaves die back in winter.
Do you need to prune Agastache 'Black Adder'?
Leave the stems standing in winter, as they protect the crown of the plant. Cut them back to just above the ground in March or April, after which the new shoots appear.

