0 named cultivars

perennial

Loosestrife

Lysimachia x hybrida

The Story

Plant Bio

Lysimachia x is a hybrid species known for its bright yellow flowers and vigorous growth.

This hybrid combines the best qualities of its parent species, offering extended blooming and a robust habit.

Uses & Benefits:

Provides vibrant foliage and ground cover that brightens shady areas.

Erosion control on slopes due to dense mat-forming growth.

Supports pollinators and beneficial insects in garden ecosystems.

Essentials

At a Glance

Plant Type

Perennial

Height

24 inches

Width

36 inches

Light

Full Sun, Partial Sun

Zones

4, 5, 6, 7, 8, 9

Water

Moderate

Humidity

Moderate

Lifespan

Perennial

Native To

Hybrid origin

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

Select a well-draining soil with moderate moisture.
Tuck seeds or cuttings into the soil at the appropriate time in spring.
Keep soil consistently moist but not waterlogged during establishment.
Provide partial sun to full sun for optimal growth.
Maintain even watering during dry periods for healthy foliage.
Apply a balanced fertilizer in early spring and mid-summer.

Pro Tip

Use layered mulch to retain soil moisture and suppress weeds around your plant.

Keep It Thriving

Care Guide

Do

Water regularly to keep soil moist 🌱
Prune lightly after flowering to encourage bushiness
Apply organic compost annually for nutrients

Don't

Avoid overwatering which can cause root rot ❌
Do not let the soil dry out completely
Refrain from heavy fertilization late in the season

Seasonal Care Calendar

Task	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Divide
Prune
Spring Cleanup

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Colorful groundcover with bright foliageBorder edging with lush green mats

Companion Plants

HostaFerns Astilbe Heuchera

Multiply

Propagation Methods

Good to Know

Common Questions

Loosestrife questions

What zones can Loosestrife grow in?

Loosestrife is hardy in USDA Zones 4–9. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Is Loosestrife deer resistant?

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

When does Loosestrife bloom?

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 Loosestrife need full sun?

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