North America Native Plant

Clasping Jewelflower

Botanical name: Streptanthus maculatus maculatus

USDA symbol: STMAM

Life cycle: annual

Habit: forb

Native status: Native to the lower 48 states  

Clasping Jewelflower: A Hidden Gem for Native Plant Enthusiasts If you’re looking to add some authentic regional charm to your Texas or Oklahoma garden, let me introduce you to a delightful little wildflower that’s been quietly gracing the prairies of the south-central United States for centuries. Meet the clasping jewelflower ...

Rare plant alert!

Region: Conservation status by state

Status: S3T2T3: 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) ⚘ Vulnerable: Either very rare and local throughout its range, found only in a restricted range (even if abundant at some locations), or factors are making it vulnerable to extinction. Typically 21 to 100 occurrences or between 3,000 and 10,000 individuals ⚘ Subspecies or variety is vulnerable: Either very rare and local throughout its range, found only in a restricted range (even if abundant at some locations), or factors are making it vulnerable to extinction. Typically 21 to 100 occurrences or between 3,000 and 10,000 individuals. ⚘

Clasping Jewelflower: A Hidden Gem for Native Plant Enthusiasts

If you’re looking to add some authentic regional charm to your Texas or Oklahoma garden, let me introduce you to a delightful little wildflower that’s been quietly gracing the prairies of the south-central United States for centuries. Meet the clasping jewelflower (Streptanthus maculatus maculatus), a native annual or biennial that’s as charming as its name suggests.

What Makes Clasping Jewelflower Special?

This lovely native forb is a true child of the Great Plains, naturally occurring only in Oklahoma and Texas. As a herbaceous plant without woody stems, clasping jewelflower represents the classic prairie wildflower – tough, adaptable, and perfectly suited to its homeland’s challenging conditions.

The clasping jewelflower gets its name from its distinctive leaves that appear to clasp or wrap around the plant’s stem. This unique feature, combined with its delicate clusters of small flowers, creates an understated beauty that fits perfectly into naturalized landscapes and prairie gardens.

A Word About Conservation

Before we dive into growing tips, there’s something important to know about this special plant. Clasping jewelflower has a conservation status that suggests it may be becoming less common in its native range. This makes it even more valuable for gardeners who want to support local biodiversity, but it also means we need to be thoughtful about how we source our plants.

If you decide to grow clasping jewelflower, please make sure you’re getting seeds or plants from reputable native plant nurseries that use ethically collected, locally-sourced material. Never collect from wild populations – instead, think of your garden as a conservation sanctuary for this lovely regional native.

Why Grow Clasping Jewelflower?

There are several compelling reasons to consider adding this native gem to your landscape:

  • True regional native: This plant has been part of Texas and Oklahoma ecosystems for thousands of years
  • Pollinator magnet: The small flowers attract native bees and other beneficial insects
  • Low maintenance: Once established, it’s quite drought tolerant and requires minimal care
  • Prairie authenticity: Perfect for prairie restoration projects and native plant gardens
  • Conservation value: Growing it helps preserve genetic diversity of this potentially vulnerable species

Growing Conditions and Care

Clasping jewelflower is surprisingly easy to grow once you understand its preferences. As a true prairie plant, it thrives in conditions that might challenge other garden favorites:

  • Sunlight: Prefers full sun but can tolerate partial shade
  • Soil: Thrives in well-draining soils; avoid heavy clay that stays wet
  • Water: Drought tolerant once established; avoid overwatering
  • Climate zones: Hardy in USDA zones 6-9, perfect for its native Texas and Oklahoma range

Planting and Propagation Tips

The best way to grow clasping jewelflower is from seed, which aligns with its natural life cycle:

  • Timing: Sow seeds in fall for spring germination
  • Cold treatment: Seeds benefit from cold stratification over winter
  • Soil prep: Simply scatter on prepared soil – no need to bury deeply
  • Patience: As an annual or biennial, some plants may not flower until their second year

Perfect Garden Companions

Clasping jewelflower shines brightest when grown alongside other native Texas and Oklahoma plants. Consider pairing it with native grasses like little bluestem, wildflowers such as prairie phlox or coreopsis, and other regional natives that share its growing preferences.

The Bottom Line

While clasping jewelflower might not have the showy blooms of some garden favorites, it offers something even more valuable – a genuine connection to the natural heritage of Texas and Oklahoma. For gardeners interested in supporting local ecosystems, attracting native pollinators, and preserving regional plant diversity, this modest little wildflower is definitely worth growing.

Just remember to source responsibly and think of your garden as part of a larger conservation effort. Every clasping jewelflower you grow is a small but meaningful contribution to preserving the botanical heritage of the south-central United States.

Clasping Jewelflower

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Dilleniidae

Order

Capparales

Family

Brassicaceae Burnett - Mustard family

Genus

Streptanthus Nutt. - twistflower

Species

Streptanthus maculatus Nutt. - clasping jewelflower

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