Trifolium ochroleucon

RHS Plant Profile
sulphur clover

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sulphur clover RHS / Joanna Kossak
sulphur clover RHS
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Synonyms

Trifolium ochroleucum

Herbaceous Perennial
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A clump-forming, herbaceous perennial growing to 45cm tall with trifoliate green leaves. Creamy-yellow flowers are borne in rounded flower heads 2-4cm acrossin summerand are a good nectar source for bees and butterflies

Position

Full sun

Soil Types

Chalk, Clay, Loam

Max Height

0.1-0.5 metres

Max Spread

0.1-0.5 metres

Size

Time to Maturity
2–5 years
Max Spread
0.1-0.5 metres
Max Height
0.1-0.5 metres

Growing Conditions

Chalk Clay Loam
Moisture
Moist but well–drained or Well–drained
pH
Alkaline or Neutral

Position

Full sun
Aspect
South–facing or North–facing or West–facing or East–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)
H7

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Fabaceae
Native to GB/Ireland
Yes
Foliage
Deciduous
Habit
Bushy
Genus
Trifolium are erect or creeping annuals, biennials and herbaceous perennials with trefoil leaves and small, pea-like flowers usually in clusters or short spikes
Name Status
Correct
Plant Range
Europe, Asia, Africa

How to Grow

Cultivation

Grows best in open, sunny sites on poor soils.

Propagation

Propagate by seed

Suggested planting locations and garden types

  • Wildflower meadow

Pruning

No pruning required

Pests

Generally pest-free

Diseases

Generally disease-free