perennial

Louisiana Bluestar

Amsonia ludoviciana

The Story

Plant Bio

Amsonia ludoviciana, commonly known as Louisiana Bluestar, is a perennial shrub with slender, arching stems, narrow blue-green leaves, and clusters of star-shaped, pale blue flowers that bloom in spring and early summer.

This species is prized for its graceful, airy appearance and excellent drought tolerance, making it a versatile choice for low-maintenance gardens and naturalistic planting schemes.

Uses & Benefits:

Blue Star Amsonia adds delicate star-shaped flowers that brighten garden borders and attract pollinators, enhancing visual appeal.

Its drought tolerance reduces water needs, making it ideal for low-maintenance landscapes.

Supports bees and hummingbirds, promoting local biodiversity.

Essentials

At a Glance

Plant Type

Perennial

Height

30 inches

Width

30 inches

Light

Full Sun, Partial Sun

Zones

6, 7, 8, 9

Water

Moderate

Humidity

Average

Lifespan

Perennial

Native To

North America

Toxicity

Toxic if ingested; sap may cause skin irritation.

Bloom period

Late spring – Early summer

In flower about 2 months of the year

Planting

How to Grow

Tuck seeds into well-draining soil in early spring.
Water regularly until established, then reduce watering.
Prune lightly after flowering to maintain shape.
Divide every 3-4 years in early spring or fall.
Mulch around base to retain moisture and suppress weeds.
Place in full sun for best flowering.

Pro Tip

Ensure soil drains well to prevent root rot; avoid overwatering once established.

Keep It Thriving

Care Guide

Do

Water deeply during dry spells 🌱
Prune after flowering to encourage bushy growth
Mulch to conserve moisture
Divide in early spring or fall

Don't

Overwater to prevent root rot ❌
Skip pruning after flowering
Plant in shady areas
Use heavy clay soil without amendment

Seasonal Care Calendar

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

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Pollinator-friendly bordersDrought-tolerant bedsWildflower gardens

Companion Plants

Echinacea purpurea Rudbeckia hirta Salvia nemorosa Coreopsis tinctoria Sedum spp.

Multiply

Propagation Methods

Good to Know

Common Questions

Louisiana Bluestar questions

What zones can Louisiana Bluestar grow in?

Louisiana Bluestar is hardy in USDA Zones 6–9. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Is Louisiana Bluestar deer resistant?

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

When does Louisiana Bluestar bloom?

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

Does Louisiana Bluestar need full sun?

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

Is Louisiana Bluestar drought tolerant?

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