North America Non-native Plant

Rose Silene

Botanical name: Silene coelirosa

USDA symbol: SICO14

Life cycle: annual

Habit: forb

Native status: Non-native, reproduces and persists in the wild in the lower 48 states  

Synonyms: Lychnis coeli-rosa (L.) Desr. (LYCO9)   

Rose Silene: A Delicate Mediterranean Beauty for Your Garden If you’re looking for a charming annual flower that brings a touch of Mediterranean elegance to your garden, rose silene (Silene coelirosa) might catch your eye. This delicate beauty, also known by its scientific synonym Lychnis coeli-rosa, offers dainty pink blooms ...

Rose Silene: A Delicate Mediterranean Beauty for Your Garden

If you’re looking for a charming annual flower that brings a touch of Mediterranean elegance to your garden, rose silene (Silene coelirosa) might catch your eye. This delicate beauty, also known by its scientific synonym Lychnis coeli-rosa, offers dainty pink blooms that dance in the breeze on slender stems.

What Is Rose Silene?

Rose silene is an annual forb – essentially a soft-stemmed herbaceous plant that completes its entire life cycle in one growing season. Unlike woody shrubs or perennials, this little charmer puts all its energy into producing flowers and seeds before winter arrives, making it a perfect candidate for gardeners who love the excitement of replanting each year.

Where Does Rose Silene Come From?

Originally hailing from the Mediterranean region, rose silene is a non-native species that has made its way to North America. Currently, it’s been documented growing wild in Massachusetts, where it reproduces on its own without human assistance. While it’s not native to our continent, it has established itself as a naturalized resident in some areas.

Why Gardeners Love (or Don’t Love) Rose Silene

Rose silene brings several appealing qualities to the garden:

  • Delicate Beauty: Small, rose-pink flowers with five notched petals create an airy, romantic appearance
  • Pollinator Friendly: Attracts beneficial insects like bees and butterflies
  • Low Maintenance: Once established, requires minimal care
  • Cottage Garden Charm: Perfect for creating that relaxed, informal garden style

However, there are some considerations to keep in mind. Since rose silene isn’t native to North America, it doesn’t provide the same ecological benefits as indigenous plants that co-evolved with our local wildlife.

Garden Design and Landscape Use

Standing 12-18 inches tall with a spread of 6-12 inches, rose silene works beautifully in several garden settings:

  • Cottage Gardens: Adds romantic, old-fashioned appeal
  • Wildflower Meadows: Contributes to naturalized plantings
  • Annual Flower Borders: Provides delicate texture among bolder blooms
  • Cut Flower Gardens: Stems work well in small, informal bouquets

Growing Rose Silene Successfully

Rose silene is refreshingly easy to grow, making it suitable for gardeners of all experience levels. Here’s what you need to know:

Growing Conditions

  • Sunlight: Thrives in full sun locations
  • Soil: Prefers well-draining soil and actually tolerates poor conditions
  • Hardiness: Grow as an annual in USDA zones 3-9

Planting and Care Tips

  • Direct sow seeds in spring after the last frost
  • Scatter seeds lightly and barely cover with soil
  • Water gently until germination occurs
  • Once established, plants are quite drought-tolerant
  • Deadhead spent flowers to encourage continued blooming
  • Allow some flowers to go to seed for natural reseeding

Consider Native Alternatives

While rose silene can be a lovely addition to your garden, consider incorporating native alternatives that provide greater ecological value:

  • Wild Bergamot (Monarda fistulosa): Native perennial with pink-purple flowers
  • Pink Evening Primrose (Oenothera speciosa): Native with similar pink blooms
  • Wild Pink (Silene caroliniana): A native silene species with pink flowers

The Bottom Line

Rose silene offers gardeners a low-maintenance annual with delicate charm and pollinator appeal. While it’s not native to North America, it’s also not considered invasive or problematic. If you choose to grow it, you’ll enjoy its romantic cottage garden appeal and easy-care nature. Just remember to balance non-native plants with plenty of native species to support local wildlife and maintain ecological health in your landscape.

Whether you’re creating a Mediterranean-inspired corner or adding delicate texture to your annual beds, rose silene can play a supporting role in your garden’s seasonal show.

Rose Silene

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Caryophyllidae

Order

Caryophyllales

Family

Caryophyllaceae Juss. - Pink family

Genus

Silene L. - catchfly

Species

Silene coeli-rosa (L.) Godr. - rose silene

Plant data source: USDA, NRCS 2025. The PLANTS Database. https://plants.usda.gov,. 2/25/2025. National Plant Data Team, Greensboro, NC USA