Verbesina alternifolia (Yellow Ironweed) [15 Seeds]


Germination Information: I recommend these seeds for intermediate to experienced seed-starters only, because they may require some patience. The easiest approach is to purchase and sow the seeds (barely covered with growing medium) in fall to late winter, setting 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 a month before moving it to a warm, bright place for germination. (Remove the bag if the pot will be exposed to any direct sun.)

It is possible that these seeds could germinate if you sow them in warm, moist, bright conditions. But if you try that and no seedlings appear within 3 to 4 weeks, then try the refrigerator-chilling approach above before moving them back to warmth and light.

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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Yellow ironweed (Verbesina alternifolia, formerly Actinomeris alternifolia) grows in clumps of upright, “winged” stems: hence the other common name, wingstem. They’re topped in late spring to early fall with bright yellow, daisy-form blooms that are popular with butterflies and beneficial insects.

Yellow ironweed generally grows 4 to 8 feet tall, but the long-lived plants can eventually reach to 10 feet or more. At this size, and because of their tendency to self-sow, they’re obviously best-suited to a very large-scale borders and meadow plantings. This US native pairs perfectly with the purple-flowered ironweeds (Vernonia), pink Joe-Pye weeds (Eutrochium), and tall grasses, such as big bluestem (Andropogon gerardii) and Indian grass (Sorghastrum nutans).

Full sun to light shade. Perennial; Zones 4 to 8.

Collected in September 2022. At least 15 seeds. Ecotype unknown.

Please read the germination information as well before ordering.

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