Erythronium tuolumnense

RHS Plant Profile
Tuolumne dog's tooth violet

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Tuolumne dog's tooth violet RHS 2002
Bulbs
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A perennial to 30cm, with rather glossy, wavy green leaves and stems bearing up to 4 nodding bright yellow flowers 4cm in width in spring

Position

Partial shade

Soil Types

Chalk, Clay, Loam, Sand

Max Height

0.1-0.5 metres

Max Spread

0-0.1 metre

Size

Time to Maturity
2–5 years
Max Spread
0-0.1 metre
Max Height
0.1-0.5 metres

Growing Conditions

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

Position

Partial shade
Aspect
North–facing or West–facing or South–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)
H5

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Liliaceae
Native to GB/Ireland
No
Foliage
Deciduous
Habit
Clump forming
Potentially harmful
Ornamental bulbs, not to be eaten. Wear gloves and other protective equipment when handling Pets: Ornamental bulbsnot to be eaten - see the HTA guide to potentially harmful plants for further information and useful contact numbers
Genus
Erythronium are bulbous perennials with paired, ovate or broadly elliptic leaves, and leafless stems bearing one or more nodding, star-shaped flowers with recurved petals
Name Status
Correct
Plant Range
California

How to Grow

Cultivation

Plant 10cm deep in fertile, humus-rich, well-drained soil in partial shade that does not dry out. Bulbs in storage must be kept slightly damp. See bulb cultivation

Propagation

Propagate by division after flowering

Suggested planting locations and garden types

  • Rock garden
  • Cottage and informal garden
  • Wildflower meadow
  • Underplanting of roses and shrubs
  • Flower borders and beds

Pruning

No pruning required

Pests

May be susceptible to slugs

Diseases

Generally disease-free