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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
- Self-seeding aquilegia - 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...
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
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