Agastache 'Tangerine Dreams'

RHS Plant Profile
giant hyssop 'Tangerine Dreams'

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giant hyssop 'Tangerine Dreams' RHS
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Annual Biennial Bedding Herbaceous Perennial
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A short-lived perennial, to 90cm tall, that is often grown as an annual. It has triangular leaves and large tiers of numerous orange flowers with contrasting dark, reddish-brown calyces borne over a long period from mid summer to early autumn

Position

Full sun

Soil Types

Chalk, Loam, Sand

Max Height

0.5-1 metres

Max Spread

0.1-0.5 metres

Size

Time to Maturity
1–2 years
Max Spread
0.1-0.5 metres
Max Height
0.5-1 metres

Growing Conditions

Chalk Loam Sand
Moisture
Well–drained
pH
Acid or Alkaline or Neutral

Position

Full sun
Aspect
South–facing or West–facing
Exposure
Sheltered
Hardiness

Hardiness Ratings

All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets

  • H1A: under glass all year (>15C)
  • H1B: can be grown outside in the summer (10 - 15)
  • H1C: can be grown outside in the summer (5 - 10)
  • H2: tolerant of low temperatures, but not surviving being frozen (1 to 5)
  • H3: hardy in coastal and relatively mild parts of the UK (-5 to 1)
  • H4: hardy through most of the UK (-10 to -5)
  • H5: hardy in most places throughout the UK even in severe winters (-15 to -10)
  • H6: hardy in all of UK and northern Europe (-20 to -15)
  • H7: hardy in the severest European continental climates (< -20)
H3

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Lamiaceae
Native to GB/Ireland
No
Foliage
Deciduous
Habit
Columnar upright
Genus
Agastache are herbaceous perennials with simple, aromatic leaves and small 2-lipped tubular flowers in whorls forming dense spikes, in summer and autumn; some are rather tender but can be grown as annual bedding
Name Status
Accepted

How to Grow

Cultivation

Can be used as a gap-filler in herb gardens or in sunny, dry places, for example at the base of walls and grows best in sharply-drained soils

Propagation

Propagate by seed or propagate by semi-ripe cuttings in late summer for overwintering in a frost-free place

Suggested planting locations and garden types

  • Coastal
  • Gravel garden
  • Patio and container plants
  • Wildlife gardens
  • City and courtyard gardens
  • Cottage and informal garden
  • Flower borders and beds

Pruning

Remove spent flowering spikes through the season to prolong flowering

Pests

Generally pest-free

Diseases

May be susceptible to powdery mildews