Nodding Onion Gardens

Native Plant Nursery

Where Wildflowers Grow

Columbia Station, Ohio, USA


Vernonia noveboracensis - New York Ironweed

Ohio Native Plant - Natural Range

 Vernonia noveboracensis

The United State Department of Agriculture and Natural Resource has a wonderful map showing the natural range of New York Ironweed.

The Ohio Department of Natural Resources list New York Ironweed as Presumed Extirpated in the state of Ohio.
Ironweed Baldwinsville New York
Ironweed - Baldwinsvile, New York - Roger Dahlin
Wildlife Significance
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
Propagation Notes 

For viable seed -
Start with two 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. Once seed has set for a few weeks move to a container with a lid. I save different sized containers through the year.

- 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.

Seed ProvenanceVernonia noveboracensis - New York Ironweed Holden Arboretum Kirtland , Ohio. Mother plant from a native plant propagation class 2010. Seed - Nodding Onion Gardens 2011 to present.
Vernonia noveboracensis
Vernonia noveboracensis
Cultivation Information

Height – 3 to 6 ft

Flower Color – Violet          

Blooms – Aug - September  

Sun – Sun to light shade

Hardy Zone – 3 to 9

pH - 5.0 to 6.0

Soil – Average - Moist


Family – Asteraceae           

New York Ironweed
New York Ironweed
Ironweed wildflower garden
New York Ironweed - Roger Dahlin