Carolina wild petunia
Ruellia caroliniensis
Acanthaceae


Landscape Uses:

Wildflower gardens.

Ecological Restoration Notes:

An uncommon understory herb in mesic flatwoods.
Availability:
Grown by one or two native plant nurseries in South Florida.
Description:
Small to medium wildflower.
Height:
Typically 6-15 inches in height. Usually erect and taller than broad.
Growth Rate:
Moderate.
Range:
Eastern and central United States west to Texas and south to Broward and Collier counties. Perhaps extirpated in Broward County.
Habitats:
Pinelands.
Soils:
Moist, well-drained sandy soils, without humus.
Nutritional Requirements:
Low; it grows in nutrient poor soils.
Salt Water Tolerance:
Low; does not tolerate flooding by salt or brackish water.
Salt Wind Tolerance:
Low; salt wind may burn the leaves.
Drought Tolerance:
High; does not require any supplemental water once established.
Light Requirements:
Full sun.
Flower Color:
Blue or pink.
Flower Characteristics:
Showy.
Flowering Season:
Spring-summer.
Fruit:
Inconspicuous capsule.
Wildlife and Ecology:
Larval host plant for common buckeye (Junonia coenia) butterflies.
Horticultural Notes:
Can be grown from seeds, cuttings and divisions.
Comments:
It will spread from seed in the garden, but is not aggressive.


George D. Gann, 2017
In cultivation, Florida
Shirley Denton
Shirley Denton
Shirley Denton