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Ruellia humilis Nutt.
Fringeleaf wild petunia, Hairy ruellia, Low wild Petunia, Low ruellia
Synonym(s): Ruellia ciliosa var. longiflora, Ruellia humilis var. calvescens, Ruellia humilis var. depauperata, Ruellia humilis var. expansa, Ruellia humilis var. frondosa, Ruellia humilis var. longiflora
USDA Symbol: ruhu
USDA Native Status: L48 (N)
Fringe-leaf wild petunia’s multi-branched stem may reach a height of 2 ft. but is usually less than a foot tall. The short internodes give the plant a compact, leafy, bushy appearance. Its showy flowers are petunia shaped and vary in color from lavender to purple.
Plant CharacteristicsDuration: Perennial Habit: Herb Root Type: Fibrous Leaf Retention: Deciduous Leaf Complexity: Simple Leaf Shape: Ovate Leaf Venation: Pinnate Leaf Pubescence:
Hirsute Leaf Margin: Entire Leaf Apex: Acute Leaf Base: Truncate Breeding System:
Flowers Bisexual Size Notes:
Erect or rarely decumbent. Leaf:
Flowers 3-7 cm long Fruit: Capsule
brownish to 15 mm Size Class:
Bloom InformationBloom Color: Purple
Bloom Time: May , Jun , Jul , Aug , Sep
, WV Native Distribution: PA
& e. KS,
s. to w. NC, AL
& TX Native Habitat:
Woodlands edge, Opening, Thickets
Growing ConditionsWater Use: Low
Light Requirement: Part Shade
Soil Moisture: Moist
CaCO3 Tolerance: Low
Conditions Comments: Growth habit is upright to somewhat sprawling. Wonderful addition to a wildflower planting. Blooms in the heat of summer if given a little extra water. Reseeds readily. Larval food plant for the Buckeye and several other butterfly species.
BenefitUse Ornamental: Perennial
garden, Blooms ornamental Conspicuous Flowers:
Butterflies Larval Host:
Buckeye Nectar Source:
Root Division Description: Stem
cutting taken in June or July and treated with hormone give the best results. Hold the rooted cuttings in a cold frame until spring. Seeds are produced in abundance but germination is low. Seed Collection:
Not Available Seed Treatment:
Not Available Commercially Avail:
Maintain moist soil, Fertilize in spring with rose food
National Wetland Indicator Status
This information is derived from the U.S. Army Corps of Engineers National Wetland Plant List, Version 3.1
(Lichvar, R.W. 2013. The National Wetland Plant List: 2013 wetland ratings. Phytoneuron 2013-49: 1-241). Click here
for map of regions.
Record Last Modified: 2012-12-09
Research By: NPIS, JSC