Agastache 'Blackadder'

hyssop

9cm pot
pot size guide
£5.99 Buy
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3 × 9cm pots
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£15.00 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'Black Adder'
 
5.0

(based on 2 reviews)

Ratings Distribution

  • 5 Stars

     

    (2)

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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.

        • Your Gardening Experience:
        • Experienced

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        Overwintering Tender Perennials

        Tender perennials, such as pelargoniums, fuchsias, osteospermums and marguerites look great all summer, but unless they are given protection from the harsh winter weather, they will need to be replaced each spring. If you can do this, they will last for y

        Read full article

        Aromatic agastaches

        When the heat bounces off the ground and almost overwhelms you some plants are revelling in this heat. Aromatic plants with a Mediterranean provenance like the Agastache come into their own. They are fabulous additions to the summer garden adding a verti

        Read full article