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Ruellia humilis

fringeleaf wild petunia add to wishlist

Plant types and subtypes: Perennials

Light Requirements: sun, part-sun, part-shade

Water Use: low

Soil Moisture: dry, moist

Soil Description: average, poor, loam, clay, sand, gravel/rock

Height: 1'-2'

Bloom Time: May, June, July, August, September, October

Bloom Color: lilac, lavender, blue

Leaf Color: green

Hardiness Zone: 4, 5, 6, 7, 8, 9

Additional Tags: attracts butterflies, colonizing, cottage garden plant, naturalizing, rock garden plant

Ruellia humilis (fringeleaf wild petunia)
  • Ruellia humilis (fringeleaf wild petunia)
  • Ruellia humilis (fringeleaf wild petunia)
  • Ruellia humilis (fringeleaf wild petunia)
  • Ruellia humilis (fringeleaf wild petunia)

Pricing & Availability

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Description

Ruellia humilis

Also known as:

fringeleaf wild petunia

,

hairy wild-petunia

,

hairy ruellia

,

low wild-petunia

,

fringed-leaved petunia

,

prairie petunia

,

low ruellia

Scientific Synonyms:

Ruellia ciliosa var. longiflora, Ruellia humilis var. calvescens, Ruellia humilis var. depauperata, Ruellia humilis var. expansa, Ruellia humilis var. frondosa, Ruellia humilis var. longiflora

Description

Ruellia humilis is a compact perennial that can reach up to 2', although it typically grows to a height of 1'. The leaves are oblong, up to 2" long, and covered top and bottom with fine hairs that give the foliage a silvery cast. The flowers are trumpet-shaped and petunia-like, up to 2 1/2" long, and range in color from lavender to lilac. They are produced in the upper leaf axils, forming open clusters.

Cultivation

Fringed petunia is very versatile and easy to grow. It is intolerant of wet feet and full shade, but other than that, it will grow under just about any conditions. It is a profuse bloomer, beginning in late spring and going strong through the hot, dry summer months. When grown in rich, moist soil, it can be bullied by taller and more aggressive species, so it is best planted en masse in the front of the flower bed. It spreads readily by seed (the pods burst open when ripe, projecting their seeds far and wide), particularly in disturbed areas, but can be controlled by deadheading. Zones 4-9

Propagation

Propagate by division, cuttings, or from seed. Although seed production is high, germination rates are low.

Additional Notes

The common name is a misnomer, because unlike true petunias, Ruellia is not a member of the Nightshade family, but of the Acanthus family.

Native Range & Classification

Recorded County Distribution: USDA data

Native Range:
AL, AR, FL, GA, IA, IL, IN, KS, KY, LA, MD, MI, MN, MO, MS, NC, NE, OH, OK, PA, TN, TX, VA, WI, WV

USDA Endangered Status:

  • Endangered: MD, PA, WI
  • Threatened: MI, NC

Classification

Kingdom Plantae Plants
Subkingdom Tracheobionta Vascular plants
Superdivision Spermatophyta Seed plants
Division Magnoliophyta Flowering plants
Class Magnoliopsida Dicotyledons
Subclass Asteridae
Order Scrophulariales
Family Acanthaceae Acanthus family
Genus Ruellia wild petunia
Species Ruellia humilis fringeleaf wild petunia