Oscularia deltoides

RHS Plant Profile

deltoid-leaved dew plant

RHS 1999

Synonyms

Lampranthus deltoides
Lampranthus oscularis

Bedding Cactus Succulent Conservatory Greenhouse

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A spreading succulent perennial with oblong, toothed, 3-angled grey-green leaves and daisy-like, bright magenta-pink flowers 1.5cm across, in summer and early autumn

Position

Full sun

Soil Types

Loam, Sand

Max Height

Up to 10 cm

Max Spread

0.1-0.5 metres

Size

Time to Maturity: 2–5 years
Max Spread: 0.1-0.5 metres
Max Height: Up to 10 cm

Growing Conditions

Loam Sand

Moisture: Well–drained
pH: Acid or Neutral

Position

Full sun

Aspect: West–facing or South–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): H2

Colour & Scent

Season	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family: Aizoaceae
Native to GB/Ireland: No
Foliage: Evergreen
Habit: Matforming
Genus: Oscularia are small, succulent perennials with fleshy, often angled leaves and daisy-like flowers in various bright colours
Name Status: Correct
Plant Range: South Africa (SW Cape)

How to Grow

Cultivation

Grow in cactus compost in full light. Water moderately from late spring to late summer and apply a low nitrogen liquid fertiliser every 4-6 weeks. Water sparingly at other times. Can be grown outdoors in summer but needs winter protection

Propagation

Propagate by seed at 19-24°C (66-75°F) in spring. Root sections of stem in spring and summer

Suggested planting locations and garden types

Patio and container plants

Pruning

no pruning necessary

Pests

mealybugs and aphids may occur

Diseases

Usually disease free