Cotinus obovatus

RHS Plant Profile
chittamwood

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chittamwood RHS 2002

Other common names

American smokewood

Synonyms

Rhus cotinoides
Cotinus americanus

Shrubs
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A vigorous large deciduous shrub with large rounded leaves opening purplish-pink, later green; turning orange, red and purple in autumn. Flowers pinkish in a plume to 30cm in length

Position

Full sun, Partial shade

Soil Types

Chalk, Clay, Loam, Sand

Max Height

4-8 metres

Max Spread

4-8 metres

Size

Time to Maturity
10–20 years
Max Spread
4-8 metres
Max Height
4-8 metres

Growing Conditions

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

Position

Full sun Partial shade
Aspect
North–facing or West–facing or East–facing or South–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
Anacardiaceae
Native to GB/Ireland
No
Foliage
Deciduous
Habit
Bushy
Genus
Cotinus are large deciduous shrubs or small trees with simple, obovate leaves often colouring well in autumn, and insignificant flowers borne in large, plumy panicles in summer becoming colourful in fruit
Name Status
Correct
Plant Range
SE North America

How to Grow

Cultivation

Grow in well-drained soil in sun or partial shade

Propagation

Propagate by semi-hardwood cuttings

Suggested planting locations and garden types

  • Low Maintenance

Pruning

Pruning group 1

Pests

Generally pest-free

Diseases

May be susceptible to honey fungus (rarely), verticillium wilt and powdery mildews in dry conditions