Rosa 'The One and Only' (HT)

RHS Plant Profile
rose 'The One and Only'

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Shrubs Roses

A bushy shrub to 90cm tall with glossy, mid-green leaves, and abundant, velvety, crimson-red, very fragrant flowers, to 12cm across, borne repeatedly through summer and autumn

Position

Full sun

Soil Types

Chalk, Clay, Loam, Sand

Max Height

0.5-1 metres

Max Spread

0.5-1 metres

Size

Time to Maturity
5–10 years
Max Spread
0.5-1 metres
Max Height
0.5-1 metres

Growing Conditions

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

Position

Full sun
Aspect
South–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)
H6

Colour & Scent

Fragrance Flower
Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Rosaceae
Native to GB/Ireland
No
Foliage
Deciduous
Habit
Bushy
Potentially harmful
Fruit are ornamental - not to be eaten. Wear gloves and other protective equipment when handling. Pets: Fruit are ornamental - not to be eaten - see the HTA guide to potentially harmful plants for further information and useful contact numbers
Genus
Rosa can be deciduous or semi-evergreen shrubs or scrambling climbers, with usually thorny stems bearing compound pinnate leaves and solitary or clustered flowers. Flowers may be followed by showy red or purple fruits in some varieties.
Name Status
Unresolved
Horticultural Group

Horticultural Classification Codes

Horticultural Classification Codes are often given to genera which have a large number of species or cultivars. They are used to categorise cultivated plants based on specific, shared characteristics such as shape, colour, size or flowering time, and can be displayed as letters or numbers

For example:
Dahlia ‘Sunset Kate (Sin) = Single flower
Rosa ‘Marigold’ (HT) = Hybrid Tea

Hybrid Tea, or Large-flowered bush roses are upright, thorny shrubs with large, usually glossy leaves and large, double often fragrant flowers that may be solitary or in threes

How to Grow

Cultivation

Grow fertile, humus-rich, moist but well-drained soil in full sun. For best flowering apply a balanced fertiliser and mulch in late winter or early spring; apply fertiliser again in early summer - see rose cultivation. Good for cut flowers

Propagation

Propagate by softwood cuttings in early to mid spring, hardwood cuttings in late summer to autumn or by chip budding in summer

Suggested planting locations and garden types

  • City and courtyard gardens
  • Cottage and informal garden
  • Cut flowers
  • Flower borders and beds

Pruning

Pruning group 15 (roses)

Pests

May be susceptible to aphids, rose leafhopper, glasshouse red spider mite, scale insects, caterpillars, large rose sawfly and rose leaf-rolling sawfly. Deer and rabbits can cause damage

Diseases

May be susceptible to rose black spot, rose rust, replant disease, rose dieback, and rose powdery mildew. May also be susceptible to disorders rose blindness and flower balling and sometimes honey fungus