astello indigo seeds


mint-scented spikes of purple flowers.

Astello 'Indigo' seeds grow into beautiful well-branched plants, with purple flowers that will bring the pollinators over. A gold award-winning variety, when it flowers after only 15 weeks, we see why it's so hot to trot. 

why it's special:

  • Flowers right the way through the season.
  • Ideal for Northern European climates.
  • Very attractive to pollinators.
  • Really fast to grow and thrives in garden containers.

good to know:

Plant LightFull sun

Pot PlantsPot friendly

Windowsill PlantFuss-free


Open-pollinated, GMO-free seeds.

Delivery times 
Location Delivery Price Timings
UK Standard £2.95 2-3 business days
  Express £7.95 Next day delivery
(placed before 11.00 am)


For more information on our shipping services, please visit our FAQs.


if you change your mind, or an item is not as expected...

If you have changed your mind, or an item is not as expected. You do not need to get in touch with us first. We are happy to offer a refund or exchange if you return your item to us within 28 days of receiving your order.*

Please follow the appropriate steps:

  1. Check your item is undamaged or and in it's original packaging.
  2. To help us process your return quickly, please fill out the form on the back of the delivery note and enclose it in your parcel.
  3. Affix the correct postage and return your parcel to Herboo (returns department), 4 Mount Street, London, W1K 3ND.
  4. We recommend you obtain proof of postage, as you are responsible for the goods until they reach us.

We regret that we are only able to refund postage charges if you have been sent incorrect, faulty or damaged goods. Therefore we do not recommend paying extra for 'special delivery' or 'signed for' services.

if an item is faulty or damaged, or you have been sent an incorrect product...

... please contact our customer care team within 28 days of receiving your order to discuss the best course of action.

Depending on the circumstances, we may not need you to return a damaged item and therefore may not be able to refund the postage if you post an item without getting in touch first. We regret that if items are returned using 'special delivery' or 'signed for' services, we will not be able to cover the cost.. 


We cannot accept returns of Printed or Online Gift Vouchers. We also cannot accept returns of personalised items that have been made to order, unless the item is faulty. Please contact out customer care team should you need more support.

Customer Reviews

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plant size

50 cm
30 cm



Full sun or light shade.

soil conditions


Well drained soil.

urban growing


Weekly watering.
No need to feed.

when to sow


when to harvest

care tip

A tough love approach works best - but give a deep watering weekly over dry periods.


botanical name
Agastache Hybrida ‘Astello Indigo’

other names
Giant hyssop 'Astello Indigo', Hummingbird mint 'Astello Indigo', Anise hyssop 'Astello Indigo', Wild hyssop 'Astello Indigo'

plant type

pot size
30 cm

pet / baby safe

approx. number of seeds

sowing guide
Sow seeds on firm, damp soil and lightly pat down but do not cover. Place in a warm sunny spot and keep well hydrated.

about astello indigo

Agastache hybrid 'Astello Indigo' is highly versatile and can be grown for perennial and annual borders, containers and patio pots, alone or in mixed combinations. The uniformity of this variety creates a beautiful sight when planted 'en masse' in borders or landscape plantings. Ideal for Northern European-type climates - performed well in trials in warmer climates, but is at its best in more temperate conditions.

in the records

Also known as hyssop or hummingbird mint, these plants are famous for attracting pollinators and hummingbirds. In 2012 Astello ‘Indigo’ won the Fleuroselect Gold Medal for it’s outstanding beauty and breeding.

companion plant with

Rudbeckia Seeds

rudbeckia 'goldsturm' seeds

Verbena Seeds Front

verbena bonariensis seeds

cosmos 'fizzy pink' seeds

cosmos 'fizzy pink' seeds