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Herbaceous Perennial

Calystegia soldanella

sea bindweed

A trailing, rhizomatous perennial up to 1m across but only 10cm tall, with succulent stems and kidney-shaped leaves. Upward-facing, trumpet-shaped flowers, pink with five white stripes, are produced in summer

Other common names

Scotch scurvy grass
sea bells
see moresea coal
sea foal-foot
cynghafog arfor

Synonyms

Convolvulus soldanella

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Ultimate height

Up to 10cm

Time to ultimate height

2–5 years

Ultimate spread

0.5–1 metres

Sand

Moisture

Well–drained

pH

Acid, Alkaline, Neutral

	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Full sun

Aspect

South–facing or West–facing

Exposure

Exposed

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)

Botanical details

Family: Convolvulaceae
Native to GB / Ireland: Yes
Foliage: Deciduous
Habit: Trailing
Name status: Correct

How to grow

Cultivation

A native plant found only on the coast, needing open, sunny conditions and very sharp drainage. Closely related to bindweed, but unlikely to become a garden weed

Propagation

Propagate by seed or by division of rhizomes

Suggested planting locations and garden types

Gravel garden
Coastal

Pruning

No pruning required

Pests

May attract slugs and snails

Diseases

Generally disease-free

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