Vernonia noveboracensis New York Ironweed
Ohio Native Plant Natural Range
To view the natural range of Vernonia noveboracensis visit the USDA Natural Resources Conservation Service website.
The Ohio Department of Natural Resources list New York Ironweed as Presumed Extirpated in the state of Ohio.
Propagation Notes New York Ironweed
Seed Stratification
Cold/Moist Storage - 60 days
Germination - Best results - We collect our seed and plant it outside in a well drained flat, protected from heavy rain. Old windows work great! If it is a warm dry winter flats will need to be occasionally watered.
Viable seed - Start with three or more mature plants. Many times flowers develop in the first season. Collect seed late in the fall once they are brown. Only collect seed when it is dry, never after it has rained. Store in a paper bag, let seed sit for a few weeks, move to a container with a lid. I save different sized containers throughout the year.
Collect only what you need - Leaving extra on the plant provides food for birds and other animals. An extra bonus, in the spring you will be rewarded with a generous supply of young New York Ironweed seedlings.
Wildlife Significance New York Ironweed
Nectar Source - Butterflies: Eastern Swallowtail and American Lady. Skippers: Crossline, Silver, Fiery, Pecks. Moths: Ironweed Clearwing and Ironweed Borer. Syrphid flies, Soldier Beetles. Numerous native bees including: Green Sweat bees Bumble bees
Pollen - Long-horned bees (Ironweed specialist)
Birds - Seed
Host Plant - Parthenice Tiger Moth
For details information visit the Illinois Wildflower website
Pollen - Long-horned bees (Ironweed specialist)
Birds - Seed
Host Plant - Parthenice Tiger Moth
For details information visit the Illinois Wildflower website
Seed Provenance New York Ironweed
Greene County, Ohio, 2021. Nodding Onion Gardens 2011 to present. Holden Arboretum Kirtland , Ohio. Mother plant from a native plant propagation class 2010.