North America Native Plant

Bigelow’s Tansyaster

Botanical name: Machaeranthera bigelovii var. mucronata

USDA symbol: MABIM

Life cycle: biennial

Habit: forb

Native status: Native to the lower 48 states  

Synonyms: Aster adenolepis S.F. Blake (ASAD8)  âš˜  Machaeranthera mucronata Greene (MAMU)   

Bigelow’s Tansyaster: A Hidden Gem for Desert Gardens If you’re looking to add some authentic Southwestern charm to your garden, let me introduce you to Bigelow’s tansyaster (Machaeranthera bigelovii var. mucronata). This delightful native wildflower might not be the flashiest plant on the block, but it’s got that understated desert ...

Rare plant alert!

Region: Conservation status by state

Status: S4S5T2: Status is uncertain but is somewhere between the following rankings: Subspecies or variety is imperiled: Extremely rare due to factor(s) making it especially vulnerable to extinction. Typically 6 to 20 occurrences or few remaining individuals (1,000 to 3,000) ⚘ Apparently Secure: Uncommon but not rare, and usually widespread. Possibly cause for longterm concern. Typically more than 100 occurrences in the state or more than 10,000 individuals ⚘ Secure: At very low or no risk of extinction in the jurisdiction due to a very extensive range, abundant populations or occurrences, with little to no concern from declines or threats. ⚘

Bigelow’s Tansyaster: A Hidden Gem for Desert Gardens

If you’re looking to add some authentic Southwestern charm to your garden, let me introduce you to Bigelow’s tansyaster (Machaeranthera bigelovii var. mucronata). This delightful native wildflower might not be the flashiest plant on the block, but it’s got that understated desert elegance that makes any garden feel more connected to the natural landscape.

What Is Bigelow’s Tansyaster?

Bigelow’s tansyaster is a native American wildflower that belongs to the aster family. Don’t let the scientific name intimidate you – this hardy little plant is actually quite approachable once you get to know it. As a forb (basically a fancy term for a non-woody flowering plant), it brings that perfect wildflower vibe without taking over your entire garden.

This plant can be either biennial or perennial, meaning it might bloom in its second year and then die, or it could stick around for several years depending on growing conditions. Think of it as nature’s way of keeping things interesting!

Where Does It Call Home?

Bigelow’s tansyaster is proudly native to Arizona, making it a fantastic choice for gardeners in the Southwest who want to celebrate their local flora. When you plant this beauty, you’re not just adding color to your garden – you’re preserving a piece of Arizona’s natural heritage.

Why Your Garden Needs This Desert Native

Here’s the thing about native plants: they’re like that friend who’s always easy to hang out with because they just get you. Bigelow’s tansyaster has evolved alongside Arizona’s climate, soil, and wildlife, which means it’s already adapted to thrive in conditions that might challenge other plants.

As a native species, this plant likely supports local pollinators and wildlife in ways that non-native plants simply can’t match. While we don’t have specific data on its wildlife benefits, most native asters are fantastic for supporting bees, butterflies, and other beneficial insects.

Growing Your Own Bigelow’s Tansyaster

Unfortunately, specific growing information for this particular variety is limited in our database, but here’s what we do know and what you should consider:

  • Location: Since it’s native to Arizona, it’s best suited for gardens in similar climates
  • Garden style: Perfect for xeriscaping, native plant gardens, or naturalized areas
  • Maintenance: As a native, it should require minimal care once established
  • Companions: Pair it with other Arizona natives for an authentic desert garden feel

A Word About Conservation

Here’s something important to keep in mind: Bigelow’s tansyaster has a conservation status that suggests we should be thoughtful about how we source it. If you’re interested in adding this plant to your garden, make sure you’re getting it from reputable nurseries that propagate their plants responsibly rather than collecting from wild populations.

This is actually a wonderful opportunity to support conservation efforts while beautifying your space. By choosing responsibly sourced native plants, you’re helping ensure that future generations can enjoy these species both in gardens and in their natural habitats.

The Bottom Line

Bigelow’s tansyaster might not be the easiest plant to find information about, but that’s part of what makes it special. It’s a true Arizona native that deserves more recognition in Southwest gardens. While we’d love to give you more specific growing tips, the best approach is to contact local native plant societies or extension offices in Arizona for detailed cultivation advice.

If you’re in Arizona and want to create a garden that truly reflects your local ecosystem, Bigelow’s tansyaster could be exactly what you’re looking for. Just remember to source it responsibly, and you’ll be adding both beauty and conservation value to your landscape.

Bigelow’s 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 bigelovii (A. Gray) Greene - Bigelow's tansyaster

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