North America Native Plant

Lacy Tansyaster

Botanical name: Machaeranthera pinnatifida pinnatifida var. pinnatifida

USDA symbol: MAPIP4

Life cycle: perennial

Habit: subshrub

Native status: Native to Canada âš˜ Native to the lower 48 states  

Synonyms: Amellus spinulosus Pursh, non Machaeranthera spinulosus Greene (AMSP5)  âš˜  Aster pinnatifidus (Hook.) Kuntze (ASPI10)  âš˜  Diplopappus pinnatifidus Hook. (DIPI4)  âš˜  Dieteria spinulosa (Pursh) Nutt. (DISP5)  âš˜  Eriocarpum australe Greene (ERAU5)  âš˜  Eriocarpum spinulosum (Pursh) Greene (ERSP14)  âš˜  Eriocarpum wootonii Greene (ERWO)  âš˜  Haplopappus coulteri Harv. & A. Gray ex A. Gray (HACO6)  âš˜  Haplopappus spinulosus (Pursh) DC. (HASP3)  âš˜  Haplopappus spinulosus (Pursh) DC. ssp. australis (Greene) H.M. Hall (HASPA)  âš˜  Haplopappus spinulosus (Pursh) DC. ssp. cotulus (Small) H.M. Hall (HASPC)  âš˜  Haplopappus spinulosus (Pursh) DC. var. canescens A. Gray (HASPC2)  âš˜  Haplopappus spinulosus (Pursh) DC. var. glaber A. Gray (HASPG3)  âš˜  Haplopappus spinulosus (Pursh) DC. ssp. laevis (Wooton & Standl.) H.M. Hall (HASPL)  âš˜  Haplopappus spinulosus (Pursh) DC. var. turbinellus (Rydb.) S.F. Blake (HASPT)  âš˜  Haplopappus texensis R.C. Jacks. (HATE5)  âš˜  Machaeranthera australis (Greene) Shinners (MAAU4)  âš˜  Machaeranthera laevis (Wooton & Standl.) Shinners (MALA12)  âš˜  Machaeranthera pinnata (Nutt.) Shinners (MAPI5)  âš˜  Machaeranthera texensis (R.C. Jacks.) Shinners (MATE12)  âš˜  Sideranthus australis (Greene) Rydb. (SIAU5)  âš˜  Sideranthus cotula Small (SICO10)  âš˜  Sideranthus laevis Wooton & Standl. (SILA12)  âš˜  Sideranthus machaerantherus Small (SIMA9)  âš˜  Sideranthus puberulus Rydb. (SIPU6)  âš˜  Sideranthus spinulosus (Pursh) Sweet ex Rydb. (SISP4)  âš˜  Sideranthus turbinellus Rydb. (SITU3)  âš˜  Sideranthus wootonii (Greene) Standl. (SIWO)  âš˜  Starkea pinnata Nutt. (STPI4)   

Lacy Tansyaster: A Prairie Gem for Your Native Garden If you’re looking to add some authentic prairie charm to your landscape, meet the lacy tansyaster (Machaeranthera pinnatifida pinnatifida var. pinnatifida). This delightful native wildflower might have a mouthful of a scientific name, but don’t let that intimidate you – it’s ...

Lacy Tansyaster: A Prairie Gem for Your Native Garden

If you’re looking to add some authentic prairie charm to your landscape, meet the lacy tansyaster (Machaeranthera pinnatifida pinnatifida var. pinnatifida). This delightful native wildflower might have a mouthful of a scientific name, but don’t let that intimidate you – it’s actually one of the more easygoing plants you can invite into your garden.

What Makes Lacy Tansyaster Special

The lacy tansyaster is a true North American native, calling both Canada and the lower 48 states home. This perennial forb – that’s garden-speak for a non-woody flowering plant – brings authentic prairie beauty wherever it grows. You’ll recognize it by its charming daisy-like flowers with cheerful yellow centers surrounded by delicate purple or lavender petals, all sitting atop intricately divided, lace-like foliage that gives the plant its common name.

Where Does It Grow Naturally

This adaptable native has quite an impressive range! You can find lacy tansyaster thriving across a vast swath of North America, from the Canadian provinces of Alberta, Manitoba, and Saskatchewan, down through the American Midwest and West. It grows naturally in states including Arizona, Arkansas, Colorado, Idaho, Iowa, Kansas, Minnesota, Montana, Nebraska, New Mexico, North Dakota, Oklahoma, South Dakota, Texas, Utah, and Wyoming.

Why Gardeners Love This Plant

There are plenty of reasons to fall for lacy tansyaster:

  • Low maintenance champion: Once established, this drought-tolerant perennial practically takes care of itself
  • Pollinator magnet: Bees, butterflies, and other beneficial insects can’t resist those nectar-rich flowers
  • Long blooming season: Enjoy flowers from late summer into fall when many other plants are calling it quits
  • Prairie authenticity: Perfect for creating genuine native plant communities
  • Self-seeding: Establishes lovely naturalized colonies over time

Perfect Garden Spots

Lacy tansyaster shines brightest in:

  • Native plant gardens and prairie restorations
  • Xerophytic (low-water) landscapes
  • Wildflower meadows and naturalized areas
  • Pollinator gardens
  • Areas where you want authentic regional character

Growing Conditions and Care

Here’s where lacy tansyaster really wins hearts – it’s remarkably undemanding! This hardy native thrives in USDA zones 3-8, making it suitable for a wide range of climates. Give it full sun and well-drained soil, and you’re most of the way there. The plant actually prefers lean soils and can struggle in overly rich, moist conditions, so resist the urge to pamper it too much.

Once established, lacy tansyaster is impressively drought tolerant, making it an excellent choice for water-wise gardening. In fact, overwatering is more likely to cause problems than underwatering!

Planting Tips for Success

Getting started with lacy tansyaster is straightforward:

  • Timing: Direct seed in fall for natural cold stratification, or early spring after any frost danger passes
  • Soil prep: Ensure good drainage – this plant won’t tolerate soggy feet
  • Spacing: Allow room for natural spreading and self-seeding
  • Water wisely: Water gently until established, then step back and let nature take over
  • Be patient: Like many natives, it may take a season or two to really hit its stride

The Bottom Line

Lacy tansyaster is a wonderful choice for gardeners who want to embrace native plants without committing to high-maintenance gardening. It brings authentic regional character, supports local wildlife, and rewards you with lovely late-season flowers – all while asking for very little in return. Whether you’re creating a full prairie restoration or just adding some native flair to a corner of your yard, this charming wildflower deserves a spot on your plant list.

Plus, with a name like lacy tansyaster, it’s guaranteed to be a conversation starter at garden club meetings!

Lacy Tansyaster

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Asteridae

Order

Asterales

Family

Asteraceae Bercht. & J. Presl - Aster family

Genus

Machaeranthera Nees - tansyaster

Species

Machaeranthera pinnatifida (Hook.) Shinners - lacy tansyaster

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