Ranunculus asiaticus 'Riviera Golden Yellow' (Riviera Series) (d)

Synonyms

Ranunculus asiaticus [Vortex Golden Yellow]

Annual Biennial Herbaceous Perennial

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A compact, half-hardy tuberous perennial to around 20cm in height and spread, often grown as an annual, with lush, dense foliage. Branched flowering stems bear fully-double blooms with an abundance of paper-thin, golden yellow petals, appearing early in March to May

Position

Full sun

Soil Types

Loam, Sand

Max Height

0.1-0.5 metres

Max Spread

0.1-0.5 metres

Size

Time to Maturity: 1 year
Max Spread: 0.1-0.5 metres
Max Height: 0.1-0.5 metres

Growing Conditions

Loam Sand

Moisture: Well–drained
pH: Acid or Alkaline or Neutral

Position

Full sun

Aspect: South–facing or West–facing
Exposure: 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): H4

Colour & Scent

Season	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family: Ranunculaceae
Native to GB/Ireland: No
Foliage: Deciduous
Habit: Bushy
Potentially harmful: Harmful if eaten, skin irritant. Wear gloves and other protective equipment when handling. Pets: Harmful if eaten, skin irritant - for further information and contact numbers regarding pets, see the HTA guide to potentially harmful plants
Genus: Ranunculus can be annuals, biennials, evergreen or herbaceous perennials, with rhizomes, tubers or spreading by runners. The leaves are variable but often palmately lobed or dissected and the flowers usually bowl-shaped
Name Status: Accepted

How to Grow

Cultivation

Requires a dry, dormant period in summer; grows best in a mix of equal parts of loam, leaf mould and grit under unheated glass in winter, with good light and ventilation

Propagation

Propagate by sowing seed in a cold frame, but generally a better result can be achieved with tubers

Suggested planting locations and garden types

City and courtyard gardens
Cottage and informal garden
Mediterranean climate plants
Bedding
Cut flowers
Flower borders and beds

Pruning

No pruning required, but remove dead flowers to encourage flowering

Pests

May be susceptible to aphids, slugs and snails

Diseases

May be susceptible to Powdery mildews and grey moulds