perennial

New Mexico Aster My Antonia

Symphyotrichum fendleri 'My Antonia'

The Story

Plant Bio

Symphyotrichum fendleri, commonly known as Fendler's aster, is a perennial herbaceous plant featuring slender stems, narrow leaves, and clusters of small, daisy-like flowers with purple petals and yellow centers that bloom in late summer to fall.

The cultivar 'My Antonia' is distinguished by its vibrant, deep purple flower heads and its compact growth habit, making it an attractive choice for borders and pollinator gardens.

Uses & Benefits:

Provides vibrant purple blooms throughout late summer and fall, attracting pollinators and birds, enhancing garden aesthetics.

Low water needs once established and tolerates poor soils, reducing maintenance efforts.

Supports pollinator populations and promotes biodiversity in native gardens.

Essentials

At a Glance

Plant Type

Perennial

Height

24 inches

Width

18 inches

Light

Full Sun, Partial Sun

Zones

4, 5, 6, 7, 8

Water

Moderate

Humidity

Average

Lifespan

Perennial

Native To

North America

Toxicity

Non-toxic

Bloom period

Late summer – Late fall

In flower about 4 months of the year

Planting

How to Grow

Tuck seeds into well-draining soil in early spring.
Water regularly to keep soil moist but not waterlogged.
Provide full sun for optimal flowering.
Fertilize with a balanced fertilizer in spring.
Divide clumps every 3-4 years in early spring for rejuvenation.
Mulch around the base to retain moisture.

Pro Tip

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

Keep It Thriving

Care Guide

Do

Water during dry spells 🌱
Deadhead spent flowers to encourage blooming
Divide plants every few years to maintain vigor
Apply mulch to conserve moisture

Don't

Overwater to avoid root rot ❌
Allow soil to dry out completely before watering
Skip pruning in late fall ❌

Seasonal Care Calendar

Task	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Divide
Pinch
Winter Prep

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Silver-foliaged borderButterfly gardenWildflower meadow

Companion Plants

EchinaceaBlack-eyed Susan Coreopsis Liatris Gaillardia

Multiply

Propagation Methods

Good to Know

Common Questions

New Mexico Aster My Antonia questions

What zones can New Mexico Aster My Antonia grow in?

New Mexico Aster My Antonia 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 New Mexico Aster My Antonia deer resistant?

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

When does New Mexico Aster My Antonia bloom?

New Mexico Aster My Antonia typically blooms in late summer through late fall. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does New Mexico Aster My Antonia need full sun?

New Mexico Aster My Antonia does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.

Is New Mexico Aster My Antonia drought tolerant?

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