Agastache 'Blackadder'

hyssop

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9cm pot
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The ultimate midsummer bee plant with soft, stubby blue bottle brushes tinged with black- purple -the antidote to sunny orange calendulas

Val Bourne - Garden Writer


  • Position: full sun
  • Soil: well-drained, fertile soil
  • Rate of growth: average
  • Flowering period: July to October
  • Hardiness: fully hardy (borderline)

    Hyssops are great for adding height to a border, with whorls of long-lasting, tiny flowers arranged like a bottlebrush, and pointed, aromatic fresh green leaves that are attractive to butterflies. They are short-lived though, and may need replacing every few years, especially after a cold or wet winter. 'Black Adder' has smoky, violet flowers on long spires from July to October. Try it as part of a Mediterranean scheme or in a sunny, well-drained border among ornamental grasses.

  • Garden care: Don't cut back the faded flower-stems until early spring, as they provide interest in the winter months. Lift and divide congested colonies in spring.

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REVIEW SNAPSHOT®

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CrocusAgastache'Black Adder'
 
5.0

(based on 2 reviews)

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Reviewed by 2 customers

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(2 of 2 customers found this review helpful)

 
5.0

Beautiful and lasts all summer

By Pete

from CM12

Pros

  • Accurate Instructions
  • Attractive

Cons

    Best Uses

    • Garden
    • Outdoors

    Comments about Crocus Agastache'Black Adder':

    I didn't pinch the tops out and they reached a little under 6' (2m)! Others I grew from seed (easy) I pinched the tops out and got much bushier plants about 3' (1m) smothered in flowers and bees all summer long. Beautiful.

    • Your Gardening Experience:
    • Experienced

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    (2 of 2 customers found this review helpful)

     
    5.0

    Bee's Knees

    By Mark S

    from Camden, London

    Pros

    • Attractive
    • Healthy
    • Versatile

    Cons

      Best Uses

        Comments about Crocus Agastache'Black Adder':

        This is the best plant I have found to date, acting as a magnet to bees, and butterflies. Its got a really long flowering season and is always swamped with bees. It does grow to approximately a metre high and can flop if not staked. Just a brilliant plant.

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        • Experienced

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        Do you want to ask a question about this?

        If so, click on the button and fill in the box below. We will post the question on the website, together with your alias (bunnykins, digger1, plantdotty etc etc) and where you are from (Sunningdale/Glasgow etc). We'll also post the answer to your question!
        1 Question | 1 Answer
        Displaying question 1
        • Q:

          I bought Hyssop last year as part of an instant border and they looked great. I left the dead stems all winter but now there seems to be no new growth at the base of any of the plants. What has happened? Am I being impatient or will they still grow as I thought they were perennial? Thanks
          Asked on 2/5/2016 by Scottydoc from Sheffield

          1 answer

          • Plant Doctor

            A:

            Hello,

            These tend to be quite late into growth each year, so I would give them another month and all being well, they should start to emerge. If however your soil tends to be on the heavy side, then they may have died off as they are not quite fully hardy (particularly if they have to deal with the combination of low temperatures and wet feet).

            Answered on 3/5/2016 by Helen from crocus
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        Do you have a question about this product? 

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