Native Plants

Drushel’s Wild Petunia

Ruellia drushelii var. drushelii

USDA symbol: RUDRD

perennial forb

Lower 48 states: native

If you’re a native plant enthusiast looking for something truly special to add to your Texas garden, let me introduce you to Drushel’s wild petunia (Ruellia drushelii var. drushelii). This little-known native perennial might just be the hidden gem your landscape has been waiting for – though I’ll be honest, ...

Drushel’s Wild Petunia: A Rare Texas Native Worth Knowing

If you’re a native plant enthusiast looking for something truly special to add to your Texas garden, let me introduce you to Drushel’s wild petunia (Ruellia drushelii var. drushelii). This little-known native perennial might just be the hidden gem your landscape has been waiting for – though I’ll be honest, finding information about this particular variety is like searching for a needle in a haystack!

What Makes This Plant Special

Drushel’s wild petunia is a native Texas perennial that belongs to the acanthus family. As a forb – basically a non-woody flowering plant – it brings that delicate, herbaceous charm to gardens without taking up the structural space that shrubs or trees would occupy. What makes this variety particularly intriguing is its rarity in cultivation, making it a true conversation starter for plant collectors and native gardening enthusiasts.

Where You’ll Find It Growing Wild

This native beauty calls Texas home, though the exact counties and regions where it naturally occurs aren’t well-documented in readily available sources. Like many native Texas plants, it has likely adapted to the state’s diverse growing conditions, from rocky hillsides to prairie edges.

  • Species observed
  • No observations

The Mystery of Growing Drushel’s Wild Petunia

Here’s where things get interesting – and a bit frustrating for us gardening nerds. The specific growing requirements for Ruellia drushelii var. drushelii are largely undocumented in standard horticultural references. However, based on its classification as a Texas native perennial forb, we can make some educated guesses about what it might need to thrive:

  • Well-draining soil (most Texas natives prefer this)
  • Tolerance for heat and drought once established
  • Full to partial sun exposure
  • Minimal supplemental watering after the first growing season

Why Consider This Plant for Your Garden

Despite the limited information available, there are several compelling reasons to seek out this rare native:

  • True native status: As a plant indigenous to Texas, it’s perfectly adapted to local conditions
  • Perennial nature: Once established, it should return year after year
  • Conservation value: Growing rare natives helps preserve genetic diversity
  • Low maintenance potential: Native plants typically require less water and care than non-natives

The Challenge of Finding This Plant

Let’s be real – you’re probably not going to find Drushel’s wild petunia at your local garden center. This is one of those plants that exists more in botanical literature than in nursery catalogs. If you’re determined to grow it, your best bet might be:

  • Contacting native plant societies in Texas
  • Reaching out to botanical gardens with native plant programs
  • Connecting with seed collection and exchange groups
  • Checking with specialized native plant nurseries

Alternative Native Options

While you’re hunting for this elusive variety, consider these more readily available native Ruellia species and other Texas natives that might scratch that same itch:

  • Wild petunia (Ruellia humilis) – more commonly available
  • Prairie phlox (Phlox pilosa) – another low-growing native bloomer
  • Lanceleaf coreopsis (Coreopsis lanceolata) – cheerful yellow native flowers

The Bottom Line

Drushel’s wild petunia represents the fascinating world of rare native plants that exist just beyond the reach of most gardeners. While we may not know everything about its specific needs or appearance, its status as a Texas native makes it worthy of conservation efforts. If you’re the type of gardener who loves a challenge and wants to contribute to preserving rare plants, this might be your next obsession.

Just remember – growing rare natives comes with responsibility. If you do manage to find seeds or plants, make sure they’re ethically sourced, and consider sharing your success with other native plant enthusiasts. After all, the more people who grow rare natives, the less rare they become!

Ruellia drushelii var. drushelii is also known as...

Often we refer to plants by their common names. When shopping for plants the scientific name is the best way to positively identify the plant species you desire. But some plants have more than one name! While it doesn't happen often, nurseries might display one name while you're searching for another. Ruellia drushelii var. drushelii is also known as:

Ruellia nudiflora var. humilis | USDA symbol: RUNUH2

Why do some plants have more than one name? Over time plant species may be renamed for a few reasons:

  1. Botanists in different regions named the same plant without knowing it had already been classified.
  2. A species was reclassified after scientific advances in, for example, DNA analysis.
  3. Slight variations within a species are sometimes mistakenly identified as entirely new species.

Classification

Group: Dicot
Kingdom: Plantae - Plants
Subkingdom: Tracheobionta - Vascular plants
Superdivision: Spermatophyta - Seed plants
Division: Magnoliophyta - Flowering plants
Class: Magnoliopsida - Dicotyledons
Subclass: Asteridae
Order: Scrophulariales
Family: Acanthaceae Juss. - Acanthus family
Genus: Ruellia L. - wild petunia

Species: Ruellia drushelii Tharp & F.A. Barkley - Drushel's wild petunia

Variety: Ruellia drushelii Tharp & F.A. Barkley var. drushelii - Drushel's wild petunia

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