Vernonia lettermannii (Narrow-Leaved Ironweed) [20 Seeds]

(2 customer reviews)

$3.95

Germination Information: I recommend these seeds for experienced seed-starters only, because the process may require some patience. Common wisdom usually suggests sowing ironweed seeds in fall and leaving them outdoors for germination in the spring. However, my original batch of these seeds germinated within 2 weeks from a late February sowing indoors under lights. I’d suggest trying that route first (barely cover the seeds with growing medium, or just press them into the surface), and if no seedlings appear within 3 weeks, then put the seed pot in a plastic bag and refrigerate it for a month or two before moving it back to a warm, bright spot.

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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Description

Narrow-leaved ironweed (Vernonia lettermannii) typically reaches 4 to 5 feet tall, with slender green leaves on upright stems. Bright purple flowers bloom in clusters at the stem tips in early fall, providing food for butterflies and other pollinators. U.S. native. Full sun. Perennial; Zones 4 to 9.

Please be aware that if you are looking for the cultivar ‘Iron Butterfly’, these seeds will not (or rather, are extremely unlikely to) produce plants that share the same compact habit and amsonia-like foliage of that vegetatively propagated cultivar. The species plants tend to get taller, the width of their generally narrow leaves varies, and the color of the flowers can range from rich purple to pinkish purple. I think the species plants are garden-worthy in their own right, however. You get the splendid late-season flower display of the more common tall ironweeds but on scaled-down plants that are much easier to fit into a home-garden border or meadow garden.

Harvested in November 2020. At least 20 seeds.

Please read the germination information as well before ordering.

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2 reviews for Vernonia lettermannii (Narrow-Leaved Ironweed) [20 Seeds]

  1. Cheryl Gebbie (verified owner)

    Verified reviewVerified review - view originalExternal link

    Followed the directions and planted 15 seeds and nine are up. Once I transplant into pots, is it better to water from top or bottom? Don’t want to do wrong thing. Thank you

    Hi Cheryl! Great to hear that the seeds did well for you. More seedlings may still come along in the next few weeks. You can water however you like; just don’t let them dry out completely and they should be fine.
    -Nan

  2. Julie Vance (verified owner)

    Verified reviewVerified review - view originalExternal link

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