North America Native Plant

Front Range Twinpod

Botanical name: Physaria bellii

USDA symbol: PHBE2

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Front Range Twinpod: A Rare Colorado Gem Worth Protecting If you’re a Colorado gardener with a passion for rare native plants, you’ve probably never heard of Front Range twinpod (Physaria bellii). And honestly, that’s not surprising – this little yellow-flowered beauty is one of Colorado’s best-kept botanical secrets, quietly growing ...

Rare plant alert!

Region: Conservation status by state

Status: S2S3: Status is uncertain but is somewhere between the following rankings: 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 ⚘

Front Range Twinpod: A Rare Colorado Gem Worth Protecting

If you’re a Colorado gardener with a passion for rare native plants, you’ve probably never heard of Front Range twinpod (Physaria bellii). And honestly, that’s not surprising – this little yellow-flowered beauty is one of Colorado’s best-kept botanical secrets, quietly growing in scattered locations across the Front Range.

What Makes Front Range Twinpod Special?

Front Range twinpod is a perennial forb that belongs to the mustard family, and it’s as Colorado as they come. This plant is endemic to our state, meaning you won’t find it growing wild anywhere else in the world. It’s a true Front Range native, adapted specifically to the unique conditions of Colorado’s eastern foothills and adjacent plains.

The plant forms low, silvery-green rosettes that hug the ground, producing cheerful clusters of small yellow flowers in early spring. True to its name, it develops distinctive twin seed pods that give it both its common name and its distinctive character.

Where Does It Grow?

Front Range twinpod is found exclusively in Colorado, scattered across the Front Range region from the foothills down to the adjacent plains. Its distribution is quite limited, which brings us to an important point about this plant’s conservation status.

A Word of Caution: Rarity Matters

Here’s where things get serious for a moment. Front Range twinpod has a Global Conservation Status of S2S3, which means it’s considered rare to uncommon. This isn’t just another pretty wildflower – it’s a plant that needs our protection.

If you’re interested in growing Front Range twinpod, please only obtain plants or seeds from reputable native plant nurseries that use responsibly sourced material. Never collect from wild populations. This plant’s limited distribution makes every wild population precious.

Why Grow Front Range Twinpod?

Despite its rarity (or perhaps because of it), Front Range twinpod can be a rewarding addition to the right garden. Here’s why Colorado gardeners might want to consider it:

  • True Colorado heritage: You’re growing a plant that exists nowhere else on Earth
  • Early spring color: Bright yellow flowers appear when most plants are still dormant
  • Pollinator magnet: Native bees and small butterflies love the early nectar source
  • Low maintenance: Once established, it’s extremely drought tolerant
  • Unique texture: The silvery foliage adds interesting contrast to garden beds

Perfect Garden Situations

Front Range twinpod isn’t for every garden, but it shines in the right conditions:

  • Rock gardens: Its low growth habit and drought tolerance make it perfect for rocky, well-drained spots
  • Native plant collections: A must-have for serious Colorado native plant enthusiasts
  • Xeriscapes: Fits perfectly into water-wise landscaping schemes
  • Naturalized areas: Great for recreating Front Range prairie conditions

Growing Conditions and Care

Front Range twinpod is adapted to Colorado’s challenging conditions, but that doesn’t mean it’s easy to grow everywhere. Here’s what it needs to thrive:

Sunlight: Full sun is essential – this plant evolved in open, sunny locations

Soil: Well-drained soil is absolutely critical. Heavy clay or poorly drained soils will kill it quickly. Sandy or gravelly soils work best.

Water: Drought tolerant once established, but needs some water during its first growing season. After that, natural precipitation is usually sufficient.

Hardiness: Hardy in USDA zones 4-7, perfectly suited to Colorado’s climate extremes

Planting and Care Tips

Growing Front Range twinpod successfully requires mimicking its natural habitat:

  • Plant in spring after the last frost
  • Ensure excellent drainage – amend heavy soils with gravel or coarse sand
  • Avoid rich, fertile soils – this plant prefers lean conditions
  • Water sparingly once established
  • No fertilizer needed – it’s adapted to poor soils
  • Allow natural winter dormancy – don’t cut back until spring

The Bottom Line

Front Range twinpod is a plant for the dedicated Colorado native plant gardener. It’s not flashy, it’s not easy to find, and it requires specific conditions to thrive. But for those who appreciate rare natives and want to help conserve Colorado’s unique flora, it’s a treasure worth seeking out.

Just remember: only grow responsibly sourced plants, never collect from the wild, and consider yourself a steward of one of Colorado’s special botanical treasures. Your garden will be home to a plant that exists nowhere else on Earth – and that’s pretty amazing.

Front Range Twinpod

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

Physaria (Nutt. ex Torr. & A. Gray) A. Gray - twinpod

Species

Physaria bellii G. Mulligan - Front Range twinpod

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