Agastache 'Blackadder'

hyssop

9cm pot
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£5.99 Buy
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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®

by PowerReviews
CrocusAgastache 'Blackadder'
 
4.3

(based on 6 reviews)

Ratings Distribution

  • 5 Stars

     

    (4)

  • 4 Stars

     

    (1)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (1)

  • 1 Stars

     

    (0)

83%

of respondents would recommend this to a friend.

Pros

  • Attractive (5)
  • Accurate instructions (4)
  • Healthy (4)
  • Hardy (3)

Cons

No Cons

Best Uses

  • Garden (3)

Reviewed by 6 customers

Displaying reviews 1-6

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4.0

Distinctive addition to garden

By exlancs

from Buckinghamshire

Verified Buyer

Pros

  • Accurate Instructions
  • Attractive
  • Hardy
  • Healthy

Cons

    Best Uses

    • Garden

    Comments about Agastache 'Blackadder':

    Useful punctuation point in border

    • Your Gardening Experience:
    • Experienced

    Comment on this reviewHelp Icon

     
    5.0

    I would recommend this product

    Profile Image

    By sheila

    from Seaside in Lincolnshire

    Verified Buyer

    Pros

    • Accurate Instructions
    • Attractive

    Cons

      Best Uses

      • Garden
      • Indoors
      • Patio

      Comments about Agastache 'Blackadder':

      This plant performed beautifully well worth it and I live on the coast in linconshire

      • Your Gardening Experience:
      • Experienced

      Comment on this reviewHelp Icon

       
      2.0

      Rather dull and uninteresting

      By Kathy

      from Surrey

      Verified Buyer

      Pros

      • Hardy
      • Healthy

      Cons

      • Unattractive

      Best Uses

        Comments about Agastache 'Blackadder':

        As a specimen it was fine but flowers don't show up that well and I just found it rather dull so dug it up after a year.

        • Your Gardening Experience:
        • Experienced

        Comment on this reviewHelp Icon

         
        5.0

        I would recommend this product

        By Baxter's Pad

        from Cheshire

        Verified Buyer

        Pros

        • Accurate Instructions
        • Attractive
        • Hardy
        • Healthy

        Cons

          Best Uses

            Comments about Agastache 'Blackadder':

            I bought this plant as part of the Butterfly and Bee planting scheme. It has grown really well and has come back just as strong the second year. Really pleased with it and the bees and butterflies love it!

            • Your Gardening Experience:
            • Keen but clueless

            Comment on this reviewHelp Icon

            (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 'Blackadder':

              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

              Comment on this reviewHelp Icon

              (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 'Blackadder':

                  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.

                  • Your Gardening Experience:
                  • Experienced

                  Comment on this reviewHelp Icon

                  Displaying reviews 1-6

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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
                  Displaying question 1

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