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AGASTACHE 'Blackadder'
('Black Adder'). Dark purplish-blue flower spikes. Anise scented leaves
Further Reading....
- Details
- Mature Size
- Tips and Advice
- Goes Well With
- Planting Combinations
- Other Suggestions
- See Also...
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Blue - purplish blue -
Height - 60-90cm (24-36in) -
Spread - 45-60cm (18-24in)
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Herbaceous - Early in the year, typically January till end of March, herbaceous plants might be supplied in 9cm pots to ensure timely despatch. - upright, clump-forming perennial. Lance-shaped, blue-green leaves are 3-5cm (1¼-2in) long
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Hardy - average winter - Hardy through most of the UK apart from inland valleys, at altitude and central/northerly locations. May suffer foliage damage and stem dieback in harsh winters in cold gardens. Plant can withstand temperatures down to -10°C (14°F) - borderline -
Full sun -
Additional Features - Good to know - wildlife plant. Attracts bees, butterflies and other insects -
Pests & Diseases - powdery mildew in dry summers -
Place of origin - garden origin -
Flower Shape - Spikes - dense, terminal spikes to 20cm (8in) long
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Hardiness - Frost hardy (down to -5) -
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Scented Plants - Scented foliage
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Seasonal Interest - Autumn
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Summer
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Soil Conditions - Fertile well drained soil
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Wildlife - Bee friendly -
Butterfly friendly
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Agastache - Care Guide
Herbaceous Plants - Video Collection
- Dividing Herbaceous Perennials - Video Tip ondemand_video
- Spring Planting Osteospermums - Video Tip ondemand_video
- Dividing Summer Perennials - Video Tip ondemand_video
- Dividing summer flowering Hemerocallis - Video Tip ondemand_video
- Summer propagation - Video Tip ondemand_video
- Supporting Plants - Video Tip ondemand_video
- Dead heading meconopsis - Video Tip ondemand_video
- Dead heading Delphiniums - Video Tip ondemand_video
- Feeding herbaceous peonies - Video Tip ondemand_video
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60-90cm (24-36in)
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45-60cm (18-24in) |
Useful extras...
Harrod Horticulture Plant Supports - Plant & Border Supports
Short circular wire plant support
The Harrod short circular plant supports available in rust or matt black are ideal for herbs, campanulas, agapanthus, shrub roses, hollyhocks and foxgloves and are made to last.
2 options from £32.00
Harrod Horticulture Plant Supports - Plant & Border Supports
5-Ring grow through support
Supports plants and stops them falling over. Continuous steel rod shaped into 5 rings approx 14cm.
2 options from £14.95
Harrod Horticulture Plant Supports - Plant & Border Supports
Scalloped Border Restraint
These gently scalloped restraints are ideal for holding back plants at the front of your border, giving a natural looking hold.
2 options from £21.95
Harrod Horticulture Plant Supports - Plant & Border Supports
Curved border restraints
The border restraints are made from sturdy, solid 6mm galvanised steel wire and powder coated dark olive green, available in a variety of sizes providing strong plant support to stop plants falling across lawns and paths
4 options from £14.50
Fertilisers & Feeds - Vitax
Q4 Pelleted Fertiliser
A useful fertiliser suitable for use on a wide variety of plants. Q4 provides all the nutrients and trace elements essential for vigorous growth, abundant flowering and ripening of fruit.
3 options from £6.00
Fertilisers & Feeds - Empathy
Rootgrow mycorrhizal fungi
Recommended by the RHS. Contains Rootgrow™ mycorrhizal fungi. Suitable for all trees and shrubs (except rhododendrons, azaleas, heathers, cranberries and blueberries)
2 options from £6.00
Fertilisers & Feeds - Empathy
All-purpose Seaweed Stimulant
All-purpose organic concentrated seaweed feed that is a ready to use, derived from sustainable harvested kelp, that can be used on all outdoor and indoor plants, except acid loving plants.
Perfect used in conjunction with Rootgrow™.
Only £7.50
Garden Goodies
Kneeling Cushion
Protect your knees in the garden with this squishy mat.
Water-repellent and light weight.
Only £3.60
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