North America Native Plant

Carolina Wild Petunia

Botanical name: Ruellia caroliniensis ciliosa var. heteromorpha

USDA symbol: RUCAH

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Synonyms: Ruellia heteromorpha Fernald (RUHE4)  âš˜  Ruellia hybrida sensu Small, non Pursh (RUHY4)   

Carolina Wild Petunia: A Florida Native Worth Knowing If you’re looking to add authentic Florida charm to your native garden, you might want to get acquainted with Carolina wild petunia (Ruellia caroliniensis ciliosa var. heteromorpha). This particular variety of the beloved wild petunia family offers gardeners a chance to grow ...

Carolina Wild Petunia: A Florida Native Worth Knowing

If you’re looking to add authentic Florida charm to your native garden, you might want to get acquainted with Carolina wild petunia (Ruellia caroliniensis ciliosa var. heteromorpha). This particular variety of the beloved wild petunia family offers gardeners a chance to grow something truly local to the Sunshine State.

What Makes This Plant Special?

Carolina wild petunia belongs to the diverse Ruellia family, and this specific variety—scientifically known as Ruellia caroliniensis ciliosa var. heteromorpha—is a perennial forb that calls Florida home. As a forb, it’s an herbaceous plant without woody stems, meaning it dies back to the ground each year but returns reliably from its roots.

You might occasionally see this plant listed under its scientific synonyms, including Ruellia heteromorpha Fernald or Ruellia hybrida sensu Small, but don’t let the fancy names intimidate you—it’s still the same charming Florida native.

Where You’ll Find It Naturally

This variety of Carolina wild petunia is native to Florida, making it a true local treasure for Sunshine State gardeners. While many Ruellia species have spread far and wide, this particular variety keeps things close to home.

Why Consider This Native?

Choosing native plants like this variety of Carolina wild petunia comes with several advantages:

  • Adapted to local conditions: Since it evolved in Florida, it’s naturally suited to local soils and climate patterns
  • Low maintenance potential: Native plants typically require less water, fertilizer, and pest control once established
  • Ecological value: Native plants support local wildlife and contribute to regional biodiversity
  • Authentic landscaping: Creates a genuine sense of place in your garden

The Reality Check

Here’s where we need to be honest: specific information about this particular variety is quite limited. While we know it’s a Florida native perennial forb, details about its exact growing requirements, appearance, and garden performance are scarce in readily available sources. This isn’t uncommon with plant varieties—sometimes the specific characteristics that distinguish one variety from another are subtle or primarily of interest to botanists.

What This Means for Gardeners

If you’re interested in growing Ruellia caroliniensis ciliosa var. heteromorpha, you might need to do some detective work:

  • Contact local native plant societies or botanical gardens for variety-specific information
  • Look for specialty native plant nurseries that might carry this particular variety
  • Consider starting with the broader species (Ruellia caroliniensis) if this specific variety proves elusive

The Bottom Line

While this particular variety of Carolina wild petunia might be something of a botanical treasure hunt, the effort could be worthwhile for dedicated native plant enthusiasts. Its status as a true Florida native makes it an authentic choice for regional gardens, even if we don’t have all the growing details at our fingertips.

If you do manage to source this variety, approach it as you would other native forbs: provide conditions similar to its natural habitat, be patient during establishment, and enjoy the satisfaction of growing something genuinely local to your area.

Sometimes the most rewarding plants are the ones that make us work a little harder to understand and appreciate them!

Carolina Wild Petunia

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

Scrophulariales

Family

Acanthaceae Juss. - Acanthus family

Genus

Ruellia L. - wild petunia

Species

Ruellia caroliniensis (J.F. Gmel.) Steud. - Carolina 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