Argyranthemum Madeira White ('Ohmadleva') (Madeira Series)

RHS Plant Profile

marguerite [Madeira White]

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Synonyms

Argyranthemum 'Ohmadleva'

Bedding Shrubs

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A tender evergreen subshrub, often grown as an annual, forming a compact mound of finely-divided, dark blue-green foliage to around 30cm high. White daisy-like flowers with yellow centres are borne above the foliage from late spring until early autumn

Position

Full sun

Soil Types

Chalk, Loam, Sand

Max Height

0.1-0.5 metres

Max Spread

0.1-0.5 metres

Size

Time to Maturity: 1–2 years
Max Spread: 0.1-0.5 metres
Max Height: 0.1-0.5 metres

Growing Conditions

Chalk Loam Sand

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

Position

Full sun

Aspect: South–facing or West–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): H2
Drought Resistance: Yes

Colour & Scent

Season	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family: Asteraceae
Native to GB/Ireland: No
Foliage: Evergreen
Habit: Bushy
Genus: Argyranthemum are evergreen woody-based perennials or sub-shrubs, with simple or pinnately dissected leaves and white, yellow or pink, daisy-like flower-heads from late spring to autumn
Name Status: Trade

How to Grow

Cultivation

Grow in moderately fertile, well-drained soil in full sun. Pinch out growing tips to keep compact. Plants will die back as temperatures drop; a deep dry mulch may protect the rootstock from light frosts, but it is advisable to take cuttings to insure against winter losses, or plant in containers that may be moved indoors over winter

Propagation

Propagate by softwood cuttings in spring, and semi-hardwood cuttings of non-flowering shoots in summer

Suggested planting locations and garden types

City and courtyard gardens
Cottage and informal garden
Mediterranean climate plants
Patio and container plants
Bedding
Flower borders and beds

Pruning

Pruning group 10, deadhead regularly

Pests

May be susceptible to chrysanthemum leaf miner

Diseases

May be susceptible to crown gall