perennial

Sea Campion

Silene maritima

The Story

Plant Bio

Silene maritima, commonly known as sea campion, is a coastal plant known for its attractive white blooms and ability to thrive in sandy soils.

This species is particularly valued for its resilience in coastal habitats and its ability to tolerate salt and drought conditions.

Uses & Benefits:

Silene maritima's silvery foliage and charming pink flowers create a coastal, low-maintenance garden feature.

Its drought-tolerance makes it ideal for xeriscaping and rock gardens.

Provides nectar for pollinators like bees and butterflies.

Essentials

At a Glance

Plant Type

Perennial

Height

6 inches

Width

18 inches

Light

Full Sun, Partial Sun

Zones

4, 5, 6, 7, 8

Water

Low

Humidity

Low

Lifespan

Perennial

Native To

Coastal Europe

Toxicity

Non-toxic to humans and pets

Planting

How to Grow

Tuck seeds into well-drained sandy soil in early spring.
Mist cuttings regularly to maintain humidity during rooting.
Water sparingly once established, avoiding waterlogged soil.
Fertilize with a balanced, low-nitrogen fertilizer monthly during growing season.
Prune lightly after flowering to promote bushiness.
Divide clumps every 2-3 years in early spring for propagation.

Pro Tip

Ensure excellent drainage to prevent root rot and promote healthy growth.

Keep It Thriving

Care Guide

Do

Plant in full sun for optimal flowering 🌞
Water moderately during dry spells
Apply a layer of gravel mulch to improve drainage

Don't

Avoid overwatering to prevent root rot ❌
Do not plant in heavy clay soil without amendments
Refrain from fertilizing during dormancy

Seasonal Care Calendar

Task	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Deadhead
Plant
Propagate

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Sandy‑foliaged borderRock garden accent

Companion Plants

Sedum EchinaceaLavender Thyme Artemisia

Multiply

Propagation Methods

Good to Know

Common Questions

Sea Campion questions

What zones can Sea Campion grow in?

Sea Campion is hardy in USDA Zones 4–8. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Is Sea Campion deer resistant?

Yes — Sea Campion is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.

When does Sea Campion bloom?

Sea Campion typically blooms in late spring to summer through late summer. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does Sea Campion need full sun?

Sea Campion does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.

Is Sea Campion drought tolerant?

Yes — once established (usually after the first full season), Sea Campion handles dry spells with minimal watering. Water deeply its first year to build the root system that makes that possible.