Ruellia humilis “White Form” (Wild Petunia) [12 Seeds]


Germination Information: I recommend these seeds for experienced seed-starters only, because they require some patience. The easiest approach is to sow the seeds in fall to late winter, just barely covered with growing medium. Set them outdoors in a spot protected from mice so they can get a chilling period and then germinate when conditions are right in spring.

If you sow after February, set the pot in a plastic bag in your refrigerator for about 2 months before moving it to a warm, bright place for germination. (Remove the bag if the pot will be exposed to any direct sun.)

Once you get wild petunia to flower in your garden, it’s likely to self-sow (possibly to the point of being considered aggressive in the Deep South). When the seedpods snap open, they can fling the seeds quite a distance, so you may find seedlings popping up in surprising places.

Note that this information will not appear on the seed packet you receive.

Please read the description as well before ordering.

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Wild petunia (Ruellia humilis) grows in 1- to 2-foot-tall clumps and flowers from early or midsummer into early fall. The trumpet-shaped blooms, which open in the morning and usually close in the afternoon, are normally lavender-purple and are appealing to hummingbirds, butterflies, and other pollinators. My original seeds came to me as “white form” and there doesn’t seem to be any other name for them, so I’m sticking with that. As all of the original seeds came true, and I grew the plants at a good distance from my species plants, I believe these seeds will produce the same white flowers with purple-veined throats, but for now, I’m guessing that some lavender-purple flowers might be possible. (Each of my original seedlings flowered in their first year—2022—so you don’t have to wait long to determine the color.) Native to parts of the central and eastern US, wild petunia is naturally well suited to hot, dry sites but also grows well in average, full-sun to light-shade garden conditions. Perennial; Zones 4 to 8.

2022-collected seeds are sold out. I hope to collect again in October 2023. At least 12 seeds. Limited supply; one packet per customer. Unknown ecotype.

Please read the germination information as well before ordering.

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