Inula conyzae

RHS Plant Profile
ploughman's spikenard

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Other common names

baccharis, cinnamon root, lady's gloves, meddyg mair

Synonyms

Inula conyza DC.

Plants for pollinators
Annual Biennial
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A native biennial plant about 80cm or more tall, with softly hairy, stalked mid-green basal leaves and purplish stems bearing dense clusters of tightly packed, cylindrical yellow flowerheads, 1cm in diameter, from midsummer to early autumn

Position

Full sun, Partial shade

Soil Types

Chalk, Loam, Sand, Clay

Max Height

1-1.5 metres

Max Spread

0.5-1 metres

Size

Time to Maturity
2–5 years
Max Spread
0.5-1 metres
Max Height
1-1.5 metres

Growing Conditions

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

Position

Full sun Partial shade
Aspect
South–facing or West–facing
Exposure
Exposed or 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)
H6

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Asteraceae
Native to GB/Ireland
Yes
Foliage
Deciduous
Habit
Clump forming
Genus
Inula may be annuals, herbaceous perennials or sub-shrubs, moslty with large basal leaves and daisy-like yellow flower-heads, often with narrow ray-florets
Name Status
Correct

How to Grow

Cultivation

Grow in moist but well-drained soil in sun or light shade

Propagation

Propagate by seed

Suggested planting locations and garden types

  • Wildflower meadow
  • Wildlife gardens

Pruning

No pruning necessary

Pests

Generally pest-free

Diseases

May be susceptible to Powdery mildews in dry soil