perennial

Coastal Loosestrife

The Story

Plant Bio

Lysimachia mauritiana is an upright annual or biennial with fleshy, spoon-shaped leaves and terminal racemes of small, star-shaped white to pale pink flowers. It is typically found in coastal habitats.

This species is notable for its tolerance of saline conditions, making it well-suited for coastal gardens. Its succulent-like foliage adds unique texture.

Uses & Benefits:

Provides vibrant yellow foliage and flowers, brightening garden beds and borders throughout summer.

Drought tolerant and low-maintenance, ideal for water-wise gardens.

Attracts pollinators like bees and butterflies, supporting local biodiversity.

Essentials

At a Glance

Plant Type

Perennial

Height

12 inches

Width

12 inches

Light

Full Sun, Partial Sun

Water

Moderate, drought tolerant once established

Humidity

Prefers average humidity levels

Lifespan

Annual

Native To

East Asia, Pacific Islands

Toxicity

Non-toxic to humans and pets

Bloom period

Mid-summer – Late summer

In flower about 2 months of the year

Planting

How to Grow

Tuck seeds or divisions into well-prepared soil in early spring.
Water regularly until established, about 6 weeks.
Mulch lightly to retain moisture and suppress weeds.
Fertilize with a balanced fertilizer in early spring.
Prune back after flowering to encourage dense growth.
Divide every 2-3 years in early spring for rejuvenation.

Pro Tip

Ensure well-drained soil and full sun for best growth.

Keep It Thriving

Care Guide

Do

Water regularly during dry spells 🌱
Prune to maintain shape after flowering
Mulch to conserve moisture

Don't

Overwater to prevent root rot ❌
Neglect pruning which can lead to leggy growth
Use heavy clay soil without amendment

Seasonal Care Calendar

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

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Bright groundcover in sunny bordersVivid edging for pathwaysDrought-tolerant garden bed

Companion Plants

Sedum EchinaceaLavender Coreopsis Gaillardia

Multiply

Propagation Methods

Good to Know

Common Questions

Coastal Loosestrife questions

Is Coastal Loosestrife deer resistant?

Not reliably. Deer may browse Coastal Loosestrife, especially tender spring growth — plan on repellents or fencing where pressure is high.

When does Coastal Loosestrife bloom?

Coastal Loosestrife typically blooms in mid-summer through late summer. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does Coastal Loosestrife need full sun?

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