Border Builder

Sea campion

Silene uniflora

Illustration of Sea campion

Sea campion is a perennial for edging, groundcover, suited to full sun and loam, sandy soil, chalk or acid soil, flowering May, Jun, Jul, Aug.

TypePerennial
Mature height20 cm
Spread35 cm
Aspectfull sun
FoliageDeciduous
HardinessUSDA 4a-8b, RHS H7
Pollinator-friendlyYes
Pet-safeNot confirmed

Where to use it in a border

At around 20 cm, it sits best along the front edge, where a low, spreading habit reads best. Give it about 35 cm of room to spread, roughly 3 to the metre when planted in a drift. It is hardy across USDA zones 4a to 8b and rated H7 by the RHS, so check it suits your area before planting.

It appears in our lists of full sun, sandy soil, chalk soil, acid soil, pollinator-friendly plants.

Border Builder uses Sea campion's height, spread, soil, bloom months and companions to place it in a full border plan for your own conditions, on iPhone and iPad.

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Flowering through the year

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Worth knowing

Good companions

Plants that share its conditions and style, chosen to complement its place in the border:

Garden styles

Coastal Native Wildlife garden