Nodding Onion Gardens

Native Plant Nursery

Columbia Station, Ohio, USA

Ruellia humilis - Wild Petunia

Cultivation Information

Height -
12 inches
Flower Color
Blooms -
June - Aug
- Full sun - partial sun medium
Soil - Moist to dry

Family -
Hardy Zone - 4 to 9
Seeds -
Explode up to 10 ft

Ruellia humilis Wild Petunia
Wild petunias used as a ground cover
Wild petunia seed pods
Green seeds pods like these are not mature
Seed Provenance - Prairie Moon Nursery, Winona, MN - 2014 - Nodding Onion Gardens - 2015 to Present
ruellia-humilis - Jim Wohl
Ruellia-humilis - Jim Wohl
Ohio Native Plant - Natural Range -

The USDA Natural Resources Conservation Service has a wonderful map showing the natural range of Ruellia humilis

Wild Petunia seed pods
NOG 2015 Wild Petunia seeds ready to harvest
Wildlife Significance

Host plant -
Buckeye Butterfly

Pollinated by -
Long-tounge bees - anthophorid and leaft-cutting

Visited by - Short-tongue bees and Syrphid flies and butterflies

Detailed information
- Visit the Illinois Wildflower site
Wild Petunia seedling
Nodding Onion Garden Wild Petunia seedling
Propagation Notes

Seed -
Collect late in fall once capsule is brown, and begins to split

Stratify -
Cold/moist storage for 70 days. We use small baggies filled with enough moist vermiculite to cover seed. Store in refrigerator for 70 days.

-  NOG seed collected in fall of 2015 had a very high February 2016 germination rate.